Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 34
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

In 1999 tanker Erica, flying Maltese flag, sank in French exclusive economic zone, spilling 20 000 tones of oil into the sea and polluting 400 km of French shore. In 2008 French court held the defendants liable for reckless negligence in criminal proceedings, with appellate and cassation courts ruling in 2010 and 2012 respectively. The author discusses those judgments.

The courts have considered the International Convention on Civil Liability for Oil Pollution Damage (1992), the International Convention on the Establishment of an International Fund for Compensation for Oil Pollution Damage (1971) and French Law No. 83‒583 of 5 July 1983. The rulings have met considerable criticism with respect to issues of French jurisdiction and channelling of liability. It was argued that criminal courts cannot give verdicts on civil liability for oil pollution damage.

The article also covers classification societies’ liability for certifying ship’s seaworthiness.

Go to article

Authors and Affiliations

Zuzanna Pepłowska-Dąbrowska
Download PDF Download RIS Download Bibtex

Abstract

This paper presents investigations on the removal of cyclohexane and ethanol from air in polyurethane- -packed biotrickling filters, inoculated with Candida albicans and Candida subhashii fungal species. Results on process performance together with flow cytometry analyses of the biofilm formed over packing elements are presented and discussed. The results indicate that the presence of ethanol enhances the removal efficiency of cyclohexane from air. This synergistic effect may be attributed to both co-metabolism of cyclohexane with ethanol as well as increased sorption efficiency of cyclohexane to mineral salt medium in the presence of ethanol. Maximum elimination capacities of 89 g m-3 h-1 and 36.7 g m-3 h-1 were noted for cyclohexane and ethanol, respectively, when a mixture of these compounds was treated in a biofilter inoculated with C. subhashii. Results of flow cytometry analyses after 100 days of biofiltration revealed that about 91% and 88% of cells in biofilm remained actively dividing, respectively for C. albicans and C. subhashii species, indicating their good condition and ability to utilize cyclohexane and ethanol as a carbon source.
Go to article

Bibliography

  1. Avalos, Ramirez, A., Jones, J.P. & Heitz, M. (2007). Biotrickling filtration of air contaminated with ethanol, Journal of Chemical Technology and Biotechnology, 82, pp. 149–157, https://doi.org/10.1002/jctb.1644.
  2. Cheng, Y., He, H., Yang, C., Zeng, G., Li, X., Chen, H. & Yu, G. (2016). Challenges and solutions for biofiltration of hydrophobic volatile organic compounds, Biotechnology Advances, 34, 1091–1102, https://doi.org/10.1016/j.biotechadv.2016.06.007
  3. Cheng, Y., Li, X., Liu, H., Yang, C., Wu, S., Du, C., Nie, L. & Zhong, Y. (2020). Effect of presence of hydrophilic volatile organic compounds on removal of hydrophobic n-hexane in biotrickling filters, Chemosphere 252, 126490, https://doi.org/10/1016/j.chemosphere.2020.126490.
  4. Cox, H.H.J., Sexton, T., Shareefdeen, Z.M. & Deshusses, M.A. (2001). Thermophilic Biotrickling Filtration of Ethanol Vapors, Environmental Science and Technology, 35, pp. 2612–2619, https://doi.org/10.1021/es001764h.
  5. Ferdowsi, M., Avalos, Ramirez, A., Jones, J.P. & Heitz, M. (2017). Elimination of mass transfer and kinetic limited organic pollutants in biofilters: A review, International Biodeterioration and Biodegradation, 119, pp. 336–348,https://doi.org/10.1016/j.ibiod.2016.10.015.
  6. Gospodarek, M., Rybarczyk, P., Szulczyński, B. & Gębicki, J. (2019). Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air, Processes 7, 187, https://doi.org/10.3390/pr7040187.
  7. He, S., Ni, Y., Lu, L., Chai, Q., Yu, T., Shen, Z. & Yang, C. (2020). Simultaneous degradation of n-hexane and production of biosurfactants by Pseudomonas sp. strain NEE2 isolated from oil-contaminated soils, Chemosphere 242, 125237, https://doi.org/10.1016/j.chemosphere.2019.125237.
  8. Martinez-Rojano, H., Mancilla-Ramirez, J., Quiñonez-Diaz, L. & Galindo-Sevilla, N. (2008). Activity of hydroxyurea against Leishmania mexicana, Antimicrobial Agents Chemotheraphy 52, pp. 3642–3647, https://doi.org/10.1128/aac.00124-08.
  9. Miller, U., Sówka, I. & Adamiak, W. (2019). The effect of betaine on the removal of toluene by biofiltration, SN Applied Sciences 1, https://doi.org/10.1007/s42452-019-0832-6.
  10. Miller, U., Sówka, I. & Adamiak, W. (2020). The use of surfactant from the Tween group in toluene biofi ltration, Archives of Environmental Protection, Vol. 46 no. 2 pp. 53–57, DOI: 10.24425/aep.2020.133474.
  11. Mudliar, S., Giri, B., Padoley, K., Satpute, D., Dixit, R., Bhatt, P., Pandey, R., Juwarkar, A. & Vaidya, A. (2010). Bioreactors for treatment of VOCs and odours – A review, Journal of Environmental Management 91, pp. 1039–1054,https://doi.org/10.1016/j.jenvman.2010.01.006.
  12. Purswani, J., Juárez, B., Rodelas, B., Gónzalez-López, J. & Pozo, C. (2011). Biofilm formation and microbial activity in a biofilter system in the presence of MTBE, ETBE and TAME, Chemosphere 85, pp. 616–624, https://doi.org/10.1016/j.chemosphere.2011.06.106.
  13. Ramani, R., Ramani, A. & Wong, S.J. (1997). Rapid Flow Cytometric Susceptibility Testing of Candida albicans, Journal of Clinical Microbiology 35(9):2320-4, DOI: 10.1128/jcm.35.9.2320-2324.1997.
  14. Rybarczyk, P., Szulczyński, B. & Gębicki, J. (2020). Simultaneous Removal of Hexane and Ethanol from Air in a Biotrickling Filter – Process Performance and Monitoring Using Electronic Nose, Sustainability 12, 387, https://doi.org/10.3390/su12010387.
  15. Rybarczyk, P., Szulczyński, B., Gębicki, J. & Hupka, J. (2019a). Treatment of malodorous air in biotrickling filters: A review, Biochemical Engineering Journal 141, pp. 146–162, https://doi.org/10.1016/j.bej.2018.10.014.
  16. Rybarczyk, P., Szulczyński, B., Gospodarek, M. & Gębicki, J. (2019b). Effects of n-butanol presence, inlet loading, empty bed residence time and starvation periods on the performance of a biotrickling filter removing cyclohexane vapors from air, Chemical Papers 74, pp. 1039–1047,https://doi.org/10.1007/s11696-019-00943-2.
  17. Salamanca, D., Dobslaw, D. & Engesser, K.-H. (2017). Removal of cyclohexane gaseous emissions using a biotrickling filter system, Chemosphere 176, pp. 97–107, https://doi.org/10.1016/j.chemosphere.2017.02.078.
  18. Spigno, G., Pagella, C., Fumi, M.D., Molteni, R. & De Faveri, D.M. (2003). VOCs removal from waste gases: Gas-phase bioreactor for the abatement of hexane by Aspergillus niger, Chemical Engineering Science 58, pp. 739–746, https://doi.org/10.1016/S0009-2509(02)00603-6.
  19. Yalkowsky, S.H., He, Y. & Jain, P. (2016). Handbook of Aqueous Solubility Data, Handbook of Aqueous Solubility Data. CRC Press,https://doi.org/10.1201/ebk1439802458.
  20. Yang, C., Chen, H., Zeng, G., Yu, G. & Luo, S. (2010). Biomass accumulation and control strategies in gas biofiltration, Biotechnology Advances 28, 4, pp. 531–540, https://doi.org/10.1016/j.biotechadv.2010.04.002.
  21. Yang, C., Qian, H., Li, X., Cheng, Y., He, H., Zeng, G. & Xi, J. (2018). Simultaneous Removal of Multicomponent VOCs in Biofilters, Trends in Biotechnology 36, 7, pp. 673–685, https://doi.org/10.1016/j.tibtech.2018.02.004.
  22. Zhang, Y., Liss, S.N. & Allen, D.G. (2006). The effects of methanol on the biofiltration of dimethyl sulfide in inorganic biofilters, Biotechnology and Bioengineering 95, pp. 734–743, https://doi.org/10.1002/bit.21033.
  23. Zhang, Y., Liu, J., Qin, Y., Yang, Z., Cao, J., Xing, Y. & Li, J. (2019). Performance and microbial community evolution of toluene degradation using a fungi-based bio-trickling filter, Journal of Hazardous Materials 365, pp. 642–649, https://doi.org/10.1016/j.jhazmat.2018.11.062.
  24. Zhanga, Y., Denga, W., Qina, Y., Yanga, Z., Liua, J. & Lia, J. (2018) Research on Simultaneous Removal of Cyclohexane and Methyl Acetate in Biotrickling Filters, Proceedings of the 2nd International Conference of Recent Trends in Environmental Science and Engineering, Niagara Falls, Canada, https://doi.org/10.11159/rtese18.107.
Go to article

Authors and Affiliations

Piotr Rybarczyk
1
ORCID: ORCID
Milena Marycz
1
Bartosz Szulczyński
1
ORCID: ORCID
Anna Brillowska-Dąbrowska
2
Agnieszka Rybarczyk
3
Jacek Gębicki
1
ORCID: ORCID

  1. Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdańsk University of Technology
  2. Department of Molecular Biotechnology and Microbiology, Faculty of Chemistry, Gdańsk University of Technology
  3. Department of Histology, Faculty of Medicine, Medical University of Gdańsk
Download PDF Download RIS Download Bibtex

Abstract

The article focuses, with a comparative perspective, on the economic reforms that were implemented in Germany during and after the unification in 1990. The fact is stressed that after the collapse of communism, most politicians and economists considered neoliberal reforms based on deregulation, liberalization and privatization as the only viable model. Although the reforms in East Gemany were not labelled as such, they amounted to a „shock therapy“, much like in neighboring Poland. The result of the radical and hasty liberalization and privatization, in combination with the currency union of Juli 1990, was the closure of many factories and mass unemployment. The government tried to compensate the losers of the transformation with welfare payments, but that resulted in a systemic crisis of united Germany, leading eventually to a second round of neoliberal reforms under the center-left coalition government under Chancellor Gerhard Schröder from 2001 to 2005. The widening social gaps and the fear of social dislocation eventually contributed to the rise of right-wing populist parties in Germany.

Go to article

Authors and Affiliations

Philipp Ther
Download PDF Download RIS Download Bibtex

Abstract

Polish research in the history of the Reformation still leaves many topics and figures barely described or analysed. Among the prominent Protestant theologians who are virtually unknown in Poland, the name of Philipp Melanchthon deserves special recognition. According to the author, this situation requires indepth research on Melanchthon; also, editions of historic sources and letters of Protestant theologians should be launched. The material that requires re-edition and, in some cases, translation into Polish includes works of authors such as Aleksander Brückner and Theodor Wotschke, who conducted their research on Protestants several decades ago.

Go to article

Authors and Affiliations

Paweł Matwiejczuk
Download PDF Download RIS Download Bibtex

Abstract

Polymer coatings are increasingly used in varied fields and applications from simple coatings of barrier to intricated nanotechnology based composite. In the present study, polyvinylidene fluoride(PVDF)/Hydroxyapatite (HA )coatings were produced by spin coating technique over 316L SS. Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) were used to observe the coated 316L SS substrates surface morphology. The corrosion protection efficiency of pure polyvinylidene fluoride and polyvinylidene fluoride/HA nanocomposite coatings on 316L SS was inspected using potentiodynamic polarization along with the ions release techniques in Hank’s solution. A superior biocompatibility and an improved protection performance against corrosion were obtained for the 316L SS samples with nanocomposite coatings compared with the pure polyvinylidene fluoride coatings and pristine 316L SS counterparts. The 316L SS samples coated by PVDF/HA nanocomposite showed enhanced corrosion protection within Hank’s solution. The corrosion of 316L SS samples within Hank’s solution increased from 92.99% to 99.99% when using 3wt% HA due to increasing the PVDF inhibition efficiency. Good agreements in the electrochemical corrosion parameters were obtained from using ions release and potentiodynamic polarization tests.
Go to article

Bibliography

  1.  H. Hermawan, D. Ramdan, and J.R.P. Djuansjah, Metals for Biomedical Applications, ch. 17, Faculty of Biomedical Engineering and Health Science, University Teknologi Malaysia, 2011.
  2.  Y. Okazaki, E. Gotoh, T. Manabe, and K. Kobayashi, “Comparison of metal concentrations in rat tibia tissues with various metallic implants”, Biomaterials 25, 5913–5920 (2004), doi: 10.1016/j.biomaterials.2004.01.064.
  3.  T. Tański, W. Matysiak, D. Kosmalska, and A. Lubos, “Influence of calcination temperature on optical and structural properties of TiO2 thin films prepared by means of sol-gel and spin coating”, Bull. Pol. Acad. Sci. Tech. Sci. 66(2), 151‒156 (2018).
  4.  J.R. Smith and D.A. Lamprou, “Polymer coatings for biomedical applications: a review”, Trans. IMF 92(1), 9‒19 (2014).
  5.  M. Srimathi, R. Rajalakshmi, and S. Subhashini, “Polyvinyl alcohol–sulphanilic acid water soluble composite as corrosion inhibitor for mild steel in hydrochloric acid medium”, Arab. J. Chem. 7(5), 525‒855 (2014).
  6.  B.P. Singh, B.K. Jena, S. Bhattacharjee, and L. Besra, “Development of oxidation and corrosion resistance hydrophobic graphene oxide- polymer composite coating on copper”, Surf. Coat. Technol. 232(15), 475‒481 (2013).
  7.  S. Rajendran, S.P. Sridevi, N. Anthony, A.A. John, and M. Sundearavadivelu, “Corrosion behaviour of carbon steel in polyvinyl alcohol”, Anti-Corros. Methods Mater. 52, 102‒107 (2005).
  8.  A.H. Asra and H.S. Ohood, “Preparation and Facilitation Of Antibactirial Activity, Hydrophilicity Of Piezo–PVDF/n-MgO Film By Electro-Spinning and Spin Coated For Wound Dressing: A Comparative Study”, J. Mech. Eng. Res. Develop. (JMERD) 42(4), 23‒31 (2019).
  9.  N. Maqsood, A. Khan, M.K. Alamgir, S.A. Shah, and M.Fahad, “PTFE Thin Film Coating on 316L Stainless Steel for Corrosion Protection in Acidic Environment”, J. Eng. Appl. Sci. 36(1), 183‒190 (2017).
  10.  J. Blitstein and D. Kathrein, “Corrosion-Resistant coating Composition Containing Hollow Microballoons”, US Patent US4374874A, Dec. 22, 1981
  11.  S. Vidhate, A. Shaito, J. Chung, and N.A. D’Souza, “Crystallization, mechanical, and rheological behavior of polyvinylidene fluoride/ carbon nanofiber composites”, J. Appl. Polym. Sci. 112, 254–260 (2009).
  12.  J. Ma, J. Zhao, Z. Ren, and L. Li, “Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes”, Front. Chem. Sci. Eng. 6, 301–310 (2012).
  13.  S. Liang, Y. Kang, A. Tiraferri, E.P. Giannelis, X. Huang, and M. Elimelech, “Highly hydrophilic polyvinylidene fluoride (PVDF) ultrafiltration membranes via postfabrication grafting of surface-tailored silica nanoparticles”, ACS Appl. Mater. Interfaces 5, 6694‒6703 (2013).
  14.  V.F. Cardoso, D.M. Correia, and C. Ribeiro, “Review: Fluorinated Polymers as Smart Materials for Advanced Biomedical Applications”, Polymers 10, 161 (2018) doi: 10.3390/polym10020161
  15.  C.T. Kwok, P.K. Wong, F.T. Cheng, and H.C. Man, “Characterization and corrosion behaviour of hydroxyapatite coating on Ti6Al4V fabricated by electrophoretic deposition”, Appl. Surf. Sci. 7, 6736–6744 (2009).
  16.  J. Zhu, X. Chen, J. Wang, and W. Chen, “Hydroxyapatite/β-tricalcium phosphate composite for guiding bone tissue growth into a titanium tube in 8 mm dog tibia cavity defects”, J. Wuhan Univ. Technol.-Mater. Sci. Ed. 31, 468–473 (2016).
  17.  R. Raja, S. Jannet, and M.A. Thampy, “Synthesis and characterization of AA5083 and AA2024 reinforced with SiO2 particles”, Bull. Pol. Acad. Sci. Tech. Sci. 66(2), 127‒132 (2018).
  18.  N.M. Dawood, “Preparation And Characterization of Bio Nitinol With Addition of Copper”, Ph. D. thesis, Materials Engineering Department, University Of Technology, Iraq, 2014.
  19.  F. Gebhardt, S. Seuss, M.C. Turhan, H. Hornberger, S. Virtanen, and A.R. Boccaccini, “Characterization of electrophoretic chitosan coatings on stainless steel”, Mater. Lett. 66, 302–304 (2012).
  20.  E. Husain, A. Abdel Nazeer, J. Alsarraf, K. Al-Awadi, M. Murad, and A. Al-Naqi, A. Shekeban,Corrosion behavior of AISI 316 stainless steel coated with modified fluoropolymer in marine condition, J. Coat. Technol. Res. 302–304 (2018).
  21.  L. Sun and C.C. Berndt, “Characterization and Mechanical Properties of Flame Sprayed Hydroxyapatitel Polymer Composite Coatings”, in Thermal Spray 2001: New Surfaces for a New Millennium, Eds. C.C. Berndt, K.A. Khor, and EX Lugscheider, ASM International, Materials Park, Ohio, USA, 2001.
  22.  A.K. Rajih, N.M. Dawood, and F. Rasheed, “Corrosion Protection of 316 L Stainless Steel by HA Coating Via Pulsed Laser Deposition Technique”, J. Eng. Appl. Sci. 13(24), 10221‒10231 (2018).
  23.  H.-F. Guo, Z.-S. Li, S.-W. Dong, W.-J. Chen, L. Deng, Y.-F. Wang, and D-J. Ying, “Piezoelectric PU/PVDF electrospun scaffolds for wound healing applications”, Colloid Surf. B-Biointerfaces 96, 29–36 (2012).
Go to article

Authors and Affiliations

Asra Ali Hussein
1
Nawal Mohammed Dawood
2
Ammar Emad Al-kawaz
1

  1. College of Materials Engineering, Polymer and Petrochemical Industries Department, Babylon University, Iraq
  2. College of Materials Engineering, Metallurgical Engineering department, Babylon University, Iraq
Download PDF Download RIS Download Bibtex

Abstract

This paper is focused on the theoretical study of heat conduction in the multi-brake system of the automated guided vehicle (AGV). The study aims to compare the amount of heat generated during braking from 10 m/s until a stop in a brake system based on organic and ceramic friction material. The theoretical study of heat conduction is solved in Matlab computational software using a derived Fourier partial differential equation for nonstationary heat conduction. The results of the simulation of the heat conduction are shown in the diagrams and indicate not only the temperature dependence in the period during braking from a speed of 10 m/s to a stop but also the amount of heat accumulated in the steel disc during braking. The simulation results show that braking in both brake systems generates approximately the same amount of heat. The difference occurs in the period of thermal activity, which was influenced by the length of the braking distance. This is caused by a coefficient of friction that significantly affects the final braking result. Finally, it can be stated that the brake system based on organic material must be equipped with a steel disc with a minimum thickness of 8 mm. This is because the brake system based on organic friction material has a set temperature limit of 160 degrees Celsius. The results presented in this study will help an engineer constructor to choose the right procedures and parameters of geometry for designing the mentioned braking system for the considered AGV.
Go to article

Bibliography

  1.  D. Varecha, R. Kohar, and F. Brumercik, “AGV brake system simulation”, LOGI – Scientific Journal on Transport and Logistics 10(1), p. 9 (2019).
  2.  G. Kovács, “Novel supply chain concepts and optimization of virtual enterprises to reduce cost, increase productivity and boost competitiveness”, Bull. Pol. Acad. Sci. Tech. Sci. 66(6), 973–980 (2018).
  3.  P. Piotrowski, D. Baczyński, S. Robak, M. Kopyt, M. Piekarz, and M. Polewaczyk, “Comprehensive forecast of electromobility mid-term development in Poland and its impacts on power system demand”, Bull. Pol. Acad. Sci. Tech. Sci. 68(4), 697–709 (2020).
  4.  M. Belorit et al., “Description of the bearing check program for countershaft gearboxs”, Proceding of 58th International Conference of Machine Design Departmens (ICDM), Prague, 2017, pp. 32–35.
  5.  M. Jacyna, R. Jachimowsky, E. Szczepański, and M. Izdebski, “Road vehicle sequencing problem in a railroad intermodal terminal – simulation research”, Bull. Pol. Acad. Sci. Tech. Sci. 68(5), 1135–1148 (2020).
  6.  D. Varecha, R. Kohar, and T. Gajdosik, “Optimizing the braking system for handling equipment”, IOP Conf. Ser.: Mater. Sci. Angl. 659, 012062 (2019).
  7.  S. Devansh, P. Sahil, and R.S. Aravind, “Industry 4:0: Tools and Implementation”, Manag. Prod. Angl. Rev. 10(3), 3–13 (2019).
  8.  K. Chwesiuk, “Integrated computer system of management in logistics”, Arch. Transp. 23(2), 153–163 (2011).
  9.  T. Kornuta, C.C. Zieliński, and T. Winiarski, “A universal architectural pattern and specification method for robot control system design”, Bull. Pol. Acad. Sci. Tech. Sci. 68(1), 3–29 (2020).
  10.  L. Kucera, T. Gajdosik, I. Gajdac, M. Mruzek, and M. Tomasikova, “Simulation of real driving cycles of electric cars in laboratory conditions”, Communications – Scientific Letters of the University of Zilina, 19(2A), 42–47 (2017).
  11.  M. Mruzek, I. Gajdac, L. Kucera, and T. Gajdosik, “The possibilityies of increasing the electric vehicle range”, TRANSCOM – International Scientific Conference on Sustainable, Modern and Safe Transprt, Procedia Engineering, 192, 621–625, (2017).
  12.  V. Kraus, Výpočet teplôt radiacích lamelových spojok a bŕzd (Calculation of temperature multi-disc shifting brake and shifting clutches), Habilitation thesis, p. 70, Žilina (1980), [in Slovak].
  13.  M. Lukac, F. Brumercik, L. Krzywonos, and Z. Krzysiak, “Transmission system power flow model”, Communications – Scientific Letters of the University of Zilina, 19(2), 27‒31, (2017).
  14.  A. Estevez-Torres et. al., “Fourier analysis to measure diffusion coefficients and resolve mixtures on a continuous electrophoresis chip”, Anal. Chem. 79(21), 8222–8231, (2007).
  15.  A.W. Orlowic, M. Mróz, G. Wnuk, O Markowska, W, Homik, and B. Kolbusz, “Coefficient of friction of a brake disc-brake pad friction couple”, Arch. Foundry Eng. 16, 196–200 (2016).
  16.  F. Talati and S. Jalalifar, “Analysis of heat conduction in disc brake system”, Heat Mass Transfer 45, 1047 (2009).
  17.  D.P. Milenković et al., “The influence of brake pads thermal conductivity on passenger car brake system efficiency”, Therm. Sci. 14, 221–230 (2010).
  18.  U. Siedlecka,”Heat conduction in the finite medium using the fractional single-phase-lag model”, Bull. Pol. Acad. Sci. Tech. Sci. 67(2), 401–407 (2019).
  19.  M. Lenarczyk and R. Domański, “Investigation of non-fourier thermal waves interaction in a solid material”, Arch. Thermodyn. 40(1), 115–126 (2019).
  20.  D. Spałek, “Two relations for generalized discrete fourier transform coefficients”, Bull. Pol. Acad. Sci. Tech. Sci. 66(3), 275–281 (2018).
  21.  K. Oprzędkiewicz, W. Mitkvski, E. Gawin, and K. Dziedzic, “The caputo vs. caputo-fabrizio operators in modeling of heat transfer process”, Bull. Pol. Acad. Sci. Tech. Sci. 66(4), 501–507 (2018).
  22.  Y. Slavchev, L. Dimitrov, and Y. Dimitrov, “3-D computer research and comparative analysis of dynamic aspect of drum brakes and caliper disc brakes”, Arch. Mech. Eng. 65(2), 253–276 (2018).
  23.  T. Muszyńsky and S. Kozieł, “Parametric study of fluid flow and heat transfer over louvered fins of air heat pump evaporator”, Arch. Thermodyn. 37(3), 45–62 (2016).
  24.  K. Wolf, Integral transforms in science and engineering, pp. 255–378, 1st Edition, Springer US, Boston, 1979.
Go to article

Authors and Affiliations

Daniel Varecha
1
Róbert Kohár
1
Michal Lukáč
1

  1. University of Žilina, Faculty of Mechanical Engineering, Department of Design and Mechanical Elements, Univerzitná 8215/1, 010 26 Žilina, Slovakia
Download PDF Download RIS Download Bibtex

Abstract

U-turn lanes eliminate left turns at intersections and allow the manoeuvre to be made via median crossovers beyond the intersection. However, there are many situations where road infrastructures are characterized by the reduced width of the median. It is clear that, in such situations, we must adopt design criteria that take into account limitations imposed by the width of the cross-section of the road. This is the reason why it is necessary to adopt design solutions which expect a complete reorganization of the road section affected by the insertion of U-turns. In this paper, we intend to propose original guidelines for U-turn lane design, suitable to guarantee both the necessity to offer a high level of functionality of the road sections to be implemented by U-turns, and the principles of safety in order to reduce unsafe conditions during inversion manoeuvres as much as possible.

Go to article

Authors and Affiliations

N. Distefano
S. Leonardi
Download PDF Download RIS Download Bibtex

Abstract

The objective of the present study is to optimize multiple process parameters in turning for achieving minimum chip-tool interface temperature, surface roughness and specific cutting energy by using numerical models. The proposed optimization models are offline conventional methods, namely hybrid Taguchi-GRA-PCA and Taguchi integrated modified weighted TOPSIS. For evaluating the effects of input process parameters both models use ANOVA as a supplementary tool. Moreover, simple linear regression analysis has been performed for establishing mathematical relationship between input factors and responses. A total of eighteen experiments have been conducted in dry and cryogenic cooling conditions based on Taguchi L18 orthogonal array. The optimization results achieved by hybrid Taguchi-GRA-PCA and modified weighted TOPSIS manifest that turning at a cutting speed of 144 m/min and a feed rate of 0.16 mm/rev in cryogenic cooling condition optimizes the multi-responses concurrently. The prediction accuracy of the modified weighted TOPSIS method is found better than hybrid Taguchi-GRA-PCA using regression analysis.
Go to article

Bibliography

[1] S.S. Nair, T. Ramkumar, M. Selva Kumar, and F. Netto. Experimental investigation of dry turning of AISI 1040 steel with TiN coated insert. Engineering Research Express, 1(2):1–13, 2019. doi: 10.1088/2631-8695/ab58d9.
[2] M.N. Sultana, N.R. Dhar, and P.B. Zaman. A Review on different cooling/lubrication techniques in metal cutting. American Journal of Mechanics and Applications, 7(4):71–87, 2019. doi: 10.11648/j.ajma.20190704.11.
[3] M.N. Sultana, P.B. Zaman, and N.R. Dhar. GRA-PCA coupled with Taguchi for optimization of inputs in turning under cryogenic cooling for AISI 4140 steel. Journal of Production Systems & Manufacturing Science, 1(2):40–62, 2020.
[4] M. Mia. Multi-response optimization of end milling parameters under through-tool cryogenic cooling condition. Measurement, 111:134–145, 2017. doi: 10.1016/j.measurement. 2017.07.033.
[5] L.S. Ahmed, N. Govindaraju, and M. Pradeep Kumar. Experimental investigations on cryogenic cooling in the drilling of titanium alloy. Materials and Manufacturing Processes, 31(5):603–607, 2016. doi: 10.1080/10426914.2015.1019127.
[6] A.B. Chattopadhyay, A. Bose, and A.K. Chattopdhyay. Improvements in grinding steels by cryogenic cooling. Precision Engineering, 7(2):93–98, 1985. doi: 10.1016/0141-6359(85)90098-4.
[7] P.P. Reddy and A. Ghosh. Some critical issues in cryo-grinding by a vitrified bonded alumina wheel using liquid nitrogen jet. Journal of Materials Processing Technology, 229: 29–337, 2016. doi: 10.1016/j.jmatprotec.2015.09.040.
[8] M. Vijay Kumar, B.J. Kiran Kumar, and N. Rudresha. Optimization of machining parameters in CNC turning of stainless steel (EN19) by Taguchi’s orthogonal array experiments. Materials Today: Proceedings, 5(5):11395–11407, 2018. doi: 10.1016/j.matpr.2018.02.107.
[9] M. Mia and N.R. Dhar. Optimization of surface roughness and cutting temperature in high-pressure coolant-assisted hard turning using Taguchi method. The International Journal of Advanced Manufacturing Technology, 88(1-4):739–753, 2017. doi: 10.1007/s00170-016-8810-2.
[10] G.M. Patel, Jagadish, R. Suresh Kumar, and N.V.S. Naidu. Optimization of abrasive water jet machining for green composites using multi-variant hybrid techniques. In K.Gupta, M.Kumar Gupta (eds.) Optimization of Manufacturing Processes, pages 129–162, Springer, 2020. doi: 10.1007/978-3-030-19638-7_6.
[11] D. Saravanakumar, B. Mohan, and T. Muthuramalingam. Application of response surface methodology on finding influencing parameters in servo pneumatic system. Measurement, 54:40–50, 2014. doi: 10.1016/j.measurement.2014.04.017.
[12] N.S. Jaddi and S. Abdullah. A cooperative-competitive master-slave global-best harmony search for ANN optimization and water-quality prediction. Applied Soft Computing, 51:209–224, 2017. doi: 10.1016/j.asoc.2016.12.011.
[13] A.S. Prasanth, R. Ramesh, and G. Palaniappan. Taguchi grey relational analysis for multi-response optimization of wear in co-continuous composite. Materials, 11(9):1743, 2018. doi: 10.3390/ma11091743.
[14] R. Manivannan and M.Pradeep Kumar. Multi-attribute decision-making of cryogenically cooled micro-EDM drilling process parameters using TOPSIS method. Materials and Manufacturing Processes, 32(2):209–215, 2017. doi: 10.1080/10426914.2016.1176182.
[15] J.S. Vesterstrøm and J. Riget. Particle swarms: Extensions for improved local, multi-modal, and dynamic search in numerical optimization. Master's Thesis, Dept. of Computer Science, University of Aarhus, Denmark, May, 2002.
[16] G. Meral, M. Sarıkaya, M. Mia, H. Dilipak, U. Şeker, and M.K. Gupta. Multi-objective optimization of surface roughness, thrust force, and torque produced by novel drill geometries using Taguchi-based GRA. The International Journal of Advanced Manufacturing Technology, 101(5-8):1595–1610, 2019. doi: 10.1007/s00170-018-3061-z.
[17] M. Priyadarshini, I. Nayak, J. Rana and P.P. Tripathy. Multi-objective optimization of turning process using fuzzy-TOPSIS analysis. Materials Today: Proceedings, March, 2020. doi: 10.1016/j.matpr.2020.02.847.
[18] M. Alhabo and L. Zhang. Multi-criteria handover using modified weighted TOPSIS methods for heterogeneous networks. IEEE Access, 6:40547–40558, 2018. doi: 10.1109/ACCESS.2018.2846045.
[19] P.B. Zaman, S. Saha, and N.R. Dhar. Hybrid Taguchi-GRA-PCA approach for multi-response optimisation of turning process parameters under HPC condition. International Journal of Machining and Machinability of Materials, 22(3-4):281–308, 2020. doi: 10.1504/IJMMM.2020.107059.
[20] N. Li, Y.J. Chen, and D.D. Kong. Multi-response optimization of Ti-6Al-4V turning operations using Taguchi-based grey relational analysis coupled with kernel principal component analysis. Advances in Manufacturing, 7(2):142–154, 2019. doi: 10.1007/s40436-019-00251-8.
[21] P. Umamaheswarrao, D.R. Raju, K.N.S. Suman, and B.R. Sankar. Multi objective optimization of process parameters for hard turning of AISI 52100 steel using Hybrid GRA-PCA. Procedia Computer Science, 133:703–710, 2018. doi: 10.1016/j.procs.2018.07.129.
[22] P.B. Patole and V.V. Kulkarni. Experimental investigation and optimization of cutting parameters with multi response characteristics in MQL turning of AISI 4340 using nano fluid. Cogent Engineering, 4(1):1303956, 2017. doi: 10.1080/23311916.2017.1303956.
[23] R. Viswanathan, S. Ramesh, S. Maniraj, and V. Subburam. Measurement and multi-response optimization of turning parameters for magnesium alloy using hybrid combination of Taguchi-GRA-PCA technique. Measurement, 159:107800, 2020. doi: 10.1016/ j.measurement.2020.107800.
[24] S. Ramesh, R. Viswanathan and S. Ambika. Measurement and optimization of surface roughness and tool wear via grey relational analysis, TOPSIS and RSA techniques. Measurement, 78:63–72, 2016. doi: 10.1016/j.measurement.2015.09.036.
[25] A. Palanisamy and T. Selvaraj. Optimization of turning parameters for surface integrity properties on Incoloy 800H superalloy using cryogenically treated multi-layer CVD coated tool. Surface Review and Letters, 26(02):1850139, 2019. doi: 10.1142/S0218625X18501391.
[26] R. Thirumalai and J.S. Senthilkumaar. Multi-criteria decision making in the selection of machining parameters for Inconel 718. Journal of Mechanical Science and Technology, 27(4):1109–1116, 2013. doi: 10.1007/s12206-013-0215-7.
[27] M. Mia. Mathematical modeling and optimization of MQL assisted end milling characteristics based on RSM and Taguchi method. Measurement, 121:249–260, 2018. doi: 10.1016/j.measurement.2018.02.017.
[28] P.J. Ross. Taguchi Techniques for Quality Engineering. McGraw-Hill, New York, 2 edition, 1996.
[29] A. Palanisamy and T. Selvaraj. Optimization of machining parameters for dry turning of Incoloy 800H using Taguchi-based grey relational analysis. Materials Today: Proceedings, 5(2):7708–7715, 2018. doi: 10.1016/j.matpr.2017.11.447.
[30] K. Pearson. On lines and planes of closest fit to systems of points in space. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 2(11):559–572, 1901. doi: 10.1080/14786440109462720.
[31] H. Hotelling. Analysis of a complex of statistical variables into principal components. Journal of Educational Psychology, 24(6):417–441, 1993. doi: 10.1037/h0071325.
[32] M. Mia, M.K. Gupta, J.A. Lozano, D. Carou, D.Y. Pimenov, G. Królczyk, A.M. Khan, and N.R. Dhar. Multi-objective optimization and life cycle assessment of eco-friendly cryogenic N 2 assisted turning of Ti-6Al-4V. Journal of Cleaner Production, 210: 121-133, 2019. doi: 10.1016/j.jclepro.2018.10.334.
[33] M.A. Khan, S.H.I. Jaffery, M. Khan, M. Younas, S.I. Butt, R. Ahmad, and S.S. Warsi. Multi-objective optimization of turning titanium-based alloy Ti-6Al-4V under dry, wet, and cryogenic conditions using gray relational analysis (GRA). The International Journal of Advanced Manufacturing Technology, 106(9-10):3897–3911, 2020. doi: 10.1007/s00170-019-04913-6.
[34] M.J. Bermingham, J. Kirsch, S. Sun, S. Palanisamy, and M.S. Dargusch. New observations on tool life, cutting forces and chip morphology in cryogenic machining Ti-6Al-4V. International Journal of Machine Tools and Manufacture, 51(6):500–511, 2011. doi: 10.1016/j.ijmachtools.2011.02.009.
[35] M. Strano, E. Chiappini, S. Tirelli, P. Albertelli, and M. Monno. Comparison of Ti6Al4V machining forces and tool life for cryogenic versus conventional cooling. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 227(9):1403–1408, 2013. doi: 10.1177/0954405413486635.
[36] H.S. Lu, C.K. Chang, N.C. Hwang, and C.T. Chung. Grey relational analysis coupled with principal component analysis for optimization design of the cutting parameters in high-speed end milling. Journal of Materials Processing Technology, 209(8):3808–3817, 2009. doi: 10.1016/j.jmatprotec.2008.08.030.
[37] L.S. Ahmed and M.Pradeep Kumar. Multiresponse optimization of cryogenic drilling on Ti-6Al-4V alloy using TOPSIS method. Journal of Mechanical Science and Technology, 30(4):1835–1841, 2016. doi: 10.1007/s12206-016-0340-1.
Go to article

Authors and Affiliations

Mst. Nazma Sultana
1
Nikhil Ranjan Dhar
1

  1. Bangladesh University of Engineering & Technology, Dhaka, Bangladesh.
Download PDF Download RIS Download Bibtex

Abstract

In this study, static behaviors of functionally graded plates resting on Winkler-Pasternak elastic foundation using the four-variable refined theory and the physical neutral surface concept is reported. The four-variable refined theory assumes that the transverse shear strain has a parabolic distribution across the plate’s thickness, thus, there is no need to use the shear correction factor. The material properties of the plate vary continuously and smoothly according to the thickness direction by a power-law distribution. The geometrical middle surface of the functionally graded plate selected in computations is very popular in the existing literature. By contrast, in this study, the physical neutral surface of the plate is used. Based on the four-variable refined plate theory and the principle of virtual work, the governing equations of the plate are derived. Next, an analytical solution for the functionally graded plate resting on the Winkler-Pasternak elastic foundation is solved using the Navier’s procedure. In numerical investigations, a comparison of the static behaviors of the functionally graded plate between several models of displacement field using the physical neutral surface is given, and parametric studies are also presented.
Go to article

Bibliography

[1] J.N. Reddy and C.D. Chin. Thermomechanical analysis of functionally graded cylinders and plates. Journal of Thermal Stresses, 21(6):593–626, 1998. doi: 10.1080/01495739808956165.
[2] S-H. Chi and Y-L.Chung. Mechanical behavior of functionally graded material plates under transverse load – Part I: Analysis. International Journal of Solids and Structures, 43(13):3657–3674, 2006. doi: 10.1016/j.ijsolstr.2005.04.011.
[3] V-L. Nguyen and T-P. Hoang. Analytical solution for free vibration of stiffened functionally graded cylindrical shell structure resting on elastic foundation. SN Applied Sciences, 1(10):1150, 2019. doi: 10.1007/s42452-019-1168-y.
[4] A.M. Zenkour and N.A. Alghamdi. Thermoelastic bending analysis of functionally graded sandwich plates. Journal of Materials Science, 43(8):2574–2589, 2008. doi: 10.1007/s10853-008-2476-6.
[5] S.A. Sina, H.M. Navazi, and H. Haddadpour. An analytical method for free vibration analysis of functionally graded beams. Materials & Design, 30(3):741–747, 2009. doi: 10.1016/j.matdes.2008.05.015.
[6] I. Mechab, H.A. Atmane, A. Tounsi, H.A. Belhadj, E.A. Adda Bedia. A two variable refined plate theory for the bending analysis of functionally graded plates. Acta Mechanica Sinica, 26(6):941–949, 2010. doi: 10.1007/s10409-010-0372-1.
[7] M.T. Tran, V.L. Nguyen, and A.T. Trinh. Static and vibration analysis of cross-ply laminated composite doubly curved shallow shell panels with stiffeners resting on Winkler–Pasternak elastic foundations. International Journal of Advanced Structural Engineering, 9(2):153–164, 2017. doi: 10.1007/s40091-017-0155-z.
[8] A. Gholipour, H. Farokhi, and M.H. Ghayesh. In-plane and out-of-plane nonlinear size-dependent dynamics of microplates. Nonlinear Dynamics, 79(3):1771–1785, 2015. doi: 10.1007/s11071-014-1773-7.
[9] M.T. Tran, V.L. Nguyen, S.D. Pham, and J. Rungamornrat. Vibration analysis of rotating functionally graded cylindrical shells with orthogonal stiffeners. Acta Mechanica, 231:2545–2564, 2020. doi: 10.1007/s00707-020-02658-y.
[10] S-H. Chi and Y-L. Chung. Mechanical behavior of functionally graded material plates under transverse load – Part II: Numerical results. International Journal of Solids and Structures, 43(13):3675–3691, 2006. doi: 10.1016/j.ijsolstr.2005.04.010.
[11] S. Hosseini-Hashemi, H.R.D Taher, H. Akhavan, and M. Omidi. Free vibration of functionally graded rectangular plates using first-order shear deformation plate theory. Applied Mathematical Modelling, 34(5):1276–1291, 2010. doi: 10.1016/j.apm.2009.08.008.
[12] M.S.A. Houari, S. Benyoucef, I. Mechab, A. Tounsi, and E.A. Adda Bedia. Two-variable refined plate theory for thermoelastic bending analysis of functionally graded sandwich plates. Journal of Thermal Stresses, 34(4):315–334, 2011. doi: 10.1080/01495739.2010.550806.
[13] M.Talha and B.N. Singh. Static response and free vibration analysis of FGM plates using higher order shear deformation theory. Applied Mathematical Modelling, 34(12):3991–4011, 2010. doi: 10.1016/j.apm.2010.03.034.
[14] H-T. Thai and S-E. Kim. A simple higher-order shear deformation theory for bending and free vibration analysis of functionally graded plates. Composite Structures, 96:165–173, 2013. doi: 10.1016/j.compstruct.2012.08.025.
[15] A. Chikh, A. Tounsi, H. Hebali, and S.R. Mahmoud. Thermal buckling analysis of cross-ply laminated plates using a simplified HSDT. Smart Structures and Systems, 19(3):289–297, 2017. doi: 10.12989/sss.2017.19.3.289.
[16] H.H. Abdelaziz, M.A.A. Meziane, A.A. Bousahla, A. Tounsi, S.R. Mahmoud, and A.S. Alwabli. An efficient hyperbolic shear deformation theory for bending, buckling and free vibration of FGM sandwich plates with various boundary conditions. Steel and Composite Structures, 25(6):693–704, 2017. doi: 10.12989/scs.2017.25.6.693.
[17] D-G. Zhang, Y-H. Zhou. A theoretical analysis of FGM thin plates based on physical neutral surface. Computational Materials Science, 44(2):716–720, 2008. doi: 10.1016/j.commatsci.2008.05.016.
[18] A.A. Bousahla, M.S.A. Houari, A. Tounsi A, E.A. Adda Bedia. A novel higher order shear and normal deformation theory based on neutral surface position for bending analysis of advanced composite plates. International Journal of Computational Methods, 11(06):1350082, 2014. doi: 10.1142/S0219876213500825.
[19] Y. Liu, S. Su, H. Huang, and Y. Liang. Thermal-mechanical coupling buckling analysis of porous functionally graded sandwich beams based on physical neutral plane. Composites Part B: Engineering, 168:236–242, 2019. doi: 10.1016/j.compositesb.2018.12.063.
[20] D-G. Zhang. Thermal post-buckling and nonlinear vibration analysis of FGM beams based on physical neutral surface and high order shear deformation theory. Meccanica, 49(2):283–293, 2014. doi: 10.1007/s11012-013-9793-9.
[21] D-G. Zhang. Nonlinear bending analysis of FGM beams based on physical neutral surface and high order shear deformation theory. Composite Structures, 100:121–126, 2013. doi: 10.1016/j.compstruct.2012.12.024.
[22] H-T. Thai and B. Uy. Levy solution for buckling analysis of functionally graded plates based on a refined plate theory. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 227(12):2649–2664, 2013. doi: 10.1177/0954406213478526.
[23] Y. Khalfi, M.S.A. Houari, and A. Tounsi. A refined and simple shear deformation theory for thermal buckling of solar functionally graded plates on elastic foundation. International Journal of Computational Methods, 11(05):1350077, 2014. doi: 10.1142/S0219876213500771.
[24] H. Bellifa, K.H. Benrahou, L. Hadji, M.S.A. Houari, and A. Tounsi. Bending and free vibration analysis of functionally graded plates using a simple shear deformation theory and the concept the neutral surface position. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 38(1):265–275, 2016. doi: 10.1007/s40430-015-0354-0.
[25] H. Shahverdi and M.R. Barati. Vibration analysis of porous functionally graded nanoplates. International Journal of Engineering Science, 120:82–99, 2017. doi: 10.1016/j.ijengsci.2017.06.008.
[26] R.P. Shimpi and H.G. Patel. A two variable refined plate theory for orthotropic plate analysis. International Journal of Solids and Structures, 43(22-23):6783–6799, 2006. doi: 10.1016/j.ijsolstr.2006.02.007.
[27] H-T. Thai and D-H. Choi. A refined plate theory for functionally graded plates resting on elastic foundation. Composites Science and Technology, 71(16):1850–1858, 2011. doi: 10.1016/j.compscitech.2011.08.016.
[28] M.H. Ghayesh. Viscoelastic nonlinear dynamic behaviour of Timoshenko FG beams. The European Physical Journal Plus, 134(8):401, 2019. doi: 10.1140/epjp/i2019-12472-x .
[29] M.H. Ghayesh. Nonlinear oscillations of FG cantilevers. Applied Acoustics, 145:393–398, 2019. doi: 10.1016/j.apacoust.2018.08.014.
[30] M.H. Ghayesh. Dynamical analysis of multilayered cantilevers. Communications in Nonlinear Science and Numerical Simulation, 71:244–253, 2019. doi: 10.1016/j.cnsns.2018.08.012.
[31] M.H. Ghayesh. Mechanics of viscoelastic functionally graded microcantilevers. European Journal of Mechanics – A/Solids, 73:492–499, 2019. doi: 10.1016/j.euromechsol.2018.09.001.
[32] M.H. Ghayesh. Dynamics of functionally graded viscoelastic microbeams. International Journal of Engineering Science, 124:115–131, 2018. doi: 10.1016/j.ijengsci.2017.11.004.
[33] A.T. Trinh, M.T. Tran, H.Q. Tran, and V.L. Nguyen. Vibration analysis of cross-ply laminated composite doubly curved shallow shell panels with stiffeners. Vietnam Journal of Science and Technology, 55(3):382–392, 2017. doi: 10.15625/2525-2518/55/3/8823.
Go to article

Authors and Affiliations

Van Loi Nguyen
1
ORCID: ORCID
Minh Tu Tran
1
ORCID: ORCID
Van Long Nguyen
1
Quang Huy Le
2

  1. Department of Strength of Materials, National University of Civil Engineering, Hanoi, Vietnam
  2. Department of Highway Engineering, Faculty of Civil Engineering, University of Transport Technology, Hanoi, Vietnam
Download PDF Download RIS Download Bibtex

Abstract

Increased competition has led businesses to compete with each other in streamlining supply chain processes, especially in the manufacturing sector. Supply Chain Management (SCM) determines the success of industrial business processes because it regulates product flow regarding integration, performance, and information. However, several problems have emerged in the supply chain process, such as a lack of coordination in the production queue, difficulties in forecasting trending products, and suboptimal production capacity. To address these issues, the role of information technology is crucial for implementing a Decision Support System (DSS). This study aims to develop a DSS to improve the supply chain processes. The research method used is Extreme Programming (XP) with a qualitative approach through a questionnaire. The research process involves collecting data, defining boundaries and problems, and designing, coding, and testing the system. As a final step, evaluation is carried out by distributing surveys to obtain valid satisfaction results. This research produces a DSS that has applicability in marketing, accounting, and production processes. The application of DSS in the furniture manufacturing industry can help manage the movement of resources, optimize strategic networks, and assist decision-making in the supply chain process.
Go to article

Authors and Affiliations

Johanes Fernandes Andry
1
Filscha Nurprihatin
2
Lydia Liliana
1

  1. Department of Information Systems, Universitas Bunda Mulia, Indonesia
  2. Department of Industrial Engineering, Sampoerna University, Indonesia
Download PDF Download RIS Download Bibtex

Abstract

This paper aims to enhance the productivity of a chilled beef production line by comparing two techniques; standard time calculation and simulation. The best improvement method was obtained using the work-study principle, a network diagram, and bottleneck identification. Two methods for improvement are proposed based on the ECRS, the Theory of Constraint (TOC), and line balancing concepts. A simulation model is developed to mimic the actual production line. The simulation results are verified, validated, and compared. Some workstations were combined, and the allocation of the workers was arranged. The present production line efficiency was 46.21%, which increased to 67.09% and 79.71% from the suggested methods. It showed that using the standard time calculation gives a different result from the simulation. In summary, the simulation model along with the application of TOC and ECRS, provides accurate information and improves overall productivity.
Go to article

Authors and Affiliations

Rendayu Jonda Neisyafitri
1
Pornthipa Ongkunaruk
2
Wisute Ongcunaruk
3

  1. Department of Agroindustrial Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia
  2. Department of Industrial Engineering, Faculty of Engineering, Kasetsart University, Thailand
  3. Department of Electrical and Computer Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Thailand
Download PDF Download RIS Download Bibtex

Abstract

Improving product quality while making decisions remains a challenge. The objective of this research was to develop a model that supports the precise enhancement of product quality through comprehensive analysis of possibilities, product incompatibilities, root causes, and recommended improvement actions. The model incorporated various tools and methods such as the SMARTER method, expert team selection, brainstorming, Ishikawa diagram, 5M+E rule, FAHP, and FTOPSIS methods. The study demonstrated that integrating quality management tools and decision-making methods into a unified model enables the accurate prioritization of activities for product quality management. This integrated approach represents the novelty of this research. The model was evaluated using a mechanical seal made of 410 alloy. The research findings can be valuable to enterprises seeking to enhance product quality at any stage of production, particularly for modified or new products.
Go to article

Authors and Affiliations

Dominika Siwiec
1
ORCID: ORCID
Remigiusz Gawlik
2 3
ORCID: ORCID
Andrzej Pacana
1
ORCID: ORCID

  1. Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Poland
  2. Cracow University of Economics, Faculty of Economics and International Relations, Poland
  3. North-West University, NWU Business School, South Africa
Download PDF Download RIS Download Bibtex

Abstract

Currently, we live in a culture of being overly busy, but this does not translate into efficiency, speed of implementation of the actions taken. Enterprises are constantly looking for methods and tools to make them more efficient. The most popular method of production management is Lean Manufacturing, less known is Theory of Constraints. This work is a continuation of the research on the comparison of these methods with apply a computer simulation, which the analyzed production process in the selected enterprise, after 24 hours and week. An attempt was made to simplify the comparison of the methods based on the obtained simulation in terms of costs. In analyzed case, more advantageous solution is to use the DBR method. To produce various orders that do not require 100% production on the bottleneck position, the use of Kanban is a frequent practice as it provides greater flexibility in order execution.
Go to article

Authors and Affiliations

Klaudia Tomaszewska
1

  1. Faculty of Management Engineering, Bialystok University of Technology, Poland
Download PDF Download RIS Download Bibtex

Abstract

Quality profiling seeks to know the quality characteristics of products and processes to improve customer satisfaction and business competitiveness. It is required to develop new techniques and tools that upgrade and complement the traditional analysis of process variables. This article proposes a new methodology to model quality control of the process and product quality characteristics by applying optimization and simulation tools. The application in the production process of carbonated beverages allowed us to identify the most influential variables on the gas content and the degrees Brix of beverage.
Go to article

Authors and Affiliations

Jean P. Morán-Zabala
1
Juan M. Cogollo-Flórez
1

  1. Department of Quality and Production, Instituto Tecnológico Metropolitano – ITM, Colombia
Download PDF Download RIS Download Bibtex

Abstract

Electric energy systems need constant modernization and updating to solve such problems as distributed management, self-sealing, improving the quality of electricity, demand management, and integration of renewable energy systems. Currently, energy systems need advanced and intelligent technologies to perform various system-level tasks. The purpose of this research is to analyze the existing control systems of electric energy systems, as well as to consider the possibility of using multi-agent systems to control electric energy systems. To achieve the aim of the research, the following scientific approaches were implemented: method of direct research, experimental method, questioning, comparative method, analysis method, and method of observation. The primary value of the research is in the novelty of the work and the fact, that functional components in multi-agent systems act as independent agents, which can interact with each other through a message communication system. This provides a simple connection between the components, which can benefit complex systems designed for an intelligent network. The intelligent network provides an efficient energy management system, and the modernization of the existing power system using a multi-agent system provides solutions to many problems. The best implementation of a multi-agent system can be achieved through the employment of fast and protected communication protocols. The authors of the research have conducted research and presented key statistical data on electricity usage in Kazakhstan over the past few years. The practical significance of the research is determined by the applied results, and their scientific significance, which is conditioned upon the use of deep, modern mathematical results and the development of an optimal control system. This research is a part of a universal model and optimal system of emergency quick response, conducting a quick preliminary prognosis as well as ensuring more lasting planning in electricity consumption.
Go to article

Authors and Affiliations

Saltanat Bitimanova
1
Aliya Shukirova
1

  1. Department of Systems Analysis and Management, L.N. Gumilyov Eurasian National University, Kazakhstan
Download PDF Download RIS Download Bibtex

Abstract

The objective of this research is to minimize product defects based on labor performance and prove the hypothesis on how labor performance affects the quality of a product through a scientific calculation using Overall Labor Effectiveness (OLE). The primary data is obtained by interviewing the supervisor and labor directly. For secondary data is obtained from the company, such as labor working time, machine scheduled downtime, total production, and defective products. The approach to extract the data is using OLE and the continued regression method. Furthermore, it proceeds to Six Sigma using the DMAIC approach since the results show a significant correlation. The result from Failure Mode and Effects Analysis (FMEA) shows four of six potential failures caused by product defects are coming from labor. To prevent failure mode, it is recommended to have the regular machine checked by labor, check the temperature of the machine, and provide Standard Operating Procedures.
Go to article

Authors and Affiliations

Filscha Nurprihatin
1
Yayang Nadistya Ayu
1
Glisina Dwinoor Rembulan
2
Johanes Fernandes Andry
3
Tika Endah Lestari
1

  1. Department of Industrial Engineering, Sampoerna University, Indonesia
  2. Department of Industrial Engineering, Universitas Bunda Mulia, Indonesia
  3. Department of Information Systems, Universitas Bunda Mulia, Indonesia
Download PDF Download RIS Download Bibtex

Abstract

This article presents the assessment of the creative culture and the level of innovativeness in selected manufacture enterprises. The theoretical part of the article discusses the space for creativity in the company and the microfoundations of the pyramid of needs related to creative culture. The pyramid consists of different microfoundations, which were used to create a questionnaire to assess the level of creative culture. This study assessed creative culture according to a model of the hierarchy of needs, developed by the author of this study based on Maslow’s pyramid of needs. The assessment used an innovation questionnaire and a creative culture questionnaire. This article presents a sample analysis of the results obtained from two of the companies that participated in the study. Furthermore, the article summarizes the results obtained from all participating companies and gives recommendations related to establishing creative culture based on these results. Every company should implement appropriate standards to help it develop a creative working environment. The goal of assessing creative culture in a company is to assist managers in building a workplace that fosters creativity, since such a workplace is a significant factor affecting the emergence of innovation. The analysis of the creative culture of the companies revealed their weaknesses and strengths in this respect. The developed methodology will undoubtedly influence an increase of awareness and knowledge of enterprises in the field of creating a pro-creative company culture. Such actions will contribute to the increase of company’s innovation, thus influencing its development.
Go to article

Authors and Affiliations

Kamila Tomczak
1
ORCID: ORCID

  1. Opole University of Technology, Poland
Download PDF Download RIS Download Bibtex

Abstract

The activities of the organisation concentrate mainly on meeting customers’ requirements. For this purpose, various activities are being conducted for customer satisfaction surveys. In this context, it is important to predict the quality of the product and the changes in the cost of the purchase product. The purpose of this study is to propose a method for predicting the quality level of a product and change the cost of the product considering current customers’ requirements for a combination of product feature states and pro-quality changes. The method includes the calculation of the quality level of the product using the punctationformalised method, where the level depends on a combination of values of states (parameters) attributes of the product, that is, current and modified. The method was tested as an example of a household vacuum cleaner for which 20 attributes were determined. According to the Pareto rule (20/80), the four product attributes important for customers were selected. Thereafter, for important attributes, possible combinations of the values of these attributes were determined. In addition, an algorithm for determining the possible combinations of product attribute states in the MATLAB program was developed. Additionally, the change in the current cost of the product considering the change in the quality level was estimated. The product cost changes were determined based on the actual cost of the product and the current product quality level. The method allows the determination of all combinations of values of state attributes of the product, such that it is possible to take appropriate improvement actions both in terms of quality and cost. The results from the method allow the prediction of product satisfaction for customers and they are favourable in terms of production cost. Therefore, it is possible to design the product in advance and support the producer in preparatory activities.
Go to article

Authors and Affiliations

Dominika Siwiec
1
ORCID: ORCID
Andrzej Pacana
1
ORCID: ORCID

  1. Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Poland
Download PDF Download RIS Download Bibtex

Abstract

Industry 4.0 (I4) as a concept offers powerful opportunities for many businesses. The set of Industry 4.0 technologies is still discussed, and boundaries are not perfectly clear. However, implementation of Industry 4.0 concept becomes strategic principle, and necessary condition for succeeding on turbulent markets. Radio Frequency Identification (RFID) was used before I4 emerged. However, it should be treated as its important part and even enabler. The question arises how adoption of RFID was impacted by I4 paradigm. Therefore, to answer this question a set of technology management tools was selected and applied to forecast RFID potential development in forthcoming years. Moreover, case studies were conducted for technology management tools and their applications for RFID for qualitative discussion of its relevance. It aimed to prove that existing toolset should be applied for modern technologies related to I4. Tools were proven to be necessary and successful. However, some specific challenges were observed and discussed.
Go to article

Authors and Affiliations

Bartlomiej Gladysz
1
Donatella Corti
2
Elias Montini
2

  1. Warsaw University of Technology, Institute of Production Systems Organization, Warsaw, Poland
  2. University of Applied Science and Arts of Southern Switzerland, Department of Innovative Technologies
Download PDF Download RIS Download Bibtex

Abstract

The presence of the spare parts stock is a necessity to ensure the continuity of services. The supply of spare parts is a special case of the global supply chain. The main objective of our research is to propose a global spare parts management approach which allows decision makers to determine the essential points in stock management. Thus, it is important for the stock manager to evaluate the system considered from time to time based on performance indicators. Some of these indicators are presented in the form of a dashboard. The presentation of this chapter chronologically traces the progress of our research work. In the first part, we present the work related to the forecast of spare parts needs through parametric and statistical methods as well as a Bayesian modelling of demand forecasting. To measure the appreciation of the supply of spare parts inventory, the second part focuses on work related to the evaluation of the performance of the spare parts system. Thus, we concretize the link between the management of spare parts and maintenance in the third part, more precisely, in the performance evaluation of the joint -management of spare parts and maintenance, in order to visualize the influence of parameters on the system. In the last section of this chapter, we will present the metaheuristic methods and their use in the management of spare parts and maintenance and make an analysis on work done in the literature.
Go to article

Authors and Affiliations

Oumaima Bounou
1
Abdellah El Barkany
1
Ahmed El Biyaali
1

  1. Mechanical Engineering Laboratory, Faculty of Science and Techniques, Morocco
Download PDF Download RIS Download Bibtex

Abstract

So far, numerous studies have been published on the selection of appropriate maintenance tactics based on some factors affecting them such as time, cost, and risk. This paper aims to develop the TRIZ contradiction matrix by explaining the dimensions and components of each of the following Reactive maintenance tactics. The related findings of previous studies were analyzed by adopting “Rousseau and Sandoski” seven-step method to identify and extract the relationships between TRIZ principles and Reactive maintenance tactics. Thereafter, 5 Reactive maintenance tactics were replaced TRIZ’s 40 principles in the TRIZ contradiction matrix. Finally, the ANP method were used to extract and prioritize the appropriate Reactive maintenance tactics. The proposed matrix in this research was used in the desalination section of one of the oil companies to select on the appropriate Reactive maintenance tactics. The results of this research is useful for managers and maintenance specialists of units in making decisions to provide appropriate Reactive maintenance tactics for the desired equipment.
Go to article

Authors and Affiliations

Mohammad Amin Mortazavi
1
Atefeh Amindoust
1
Arash Shahin
2
Mehdi Karbasian
3

  1. Department of Industrial Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
  2. Department of Management, University of Isfahan, Isfahan, Iran
  3. Department of Industrial Engineering, Malek-Ashtar University of Technology, Isfahan, Iran
Download PDF Download RIS Download Bibtex

Abstract

Industry 4.0 promises to make manufacturing processes more efficient using modern technologies like cyber-physical systems, internet of things, cloud computing and big data analytics. Lean Management (LM) is one of the most widely applied business strategies in recent decades. Thus, implementing Industry 4.0 mostly means integrating technologies in companies that already operate according to LM. However, due to the novelty of the topic, research on how LM and Industry 4.0 can be integrated is still under development. This paper explores the synergic relationship between these two domains by identifying six examples of real cases that address LM-Industry 4.0 integration in the extant literature. The goal is to make explicit the best practices that are being implemented by six distinct industrial sectors
Go to article

Authors and Affiliations

Beatrice Paiva Santos
1
Daisy Valle Enrique
1 2
Vinicius B.P. Maciel
1
Tânia Miranda Lima
1
Fernando Charrua-Santos
1
Renata Walczak
3

  1. Electromechanical Department, C-MAST, University of Beira Interior, Covilhã, Portugal
  2. Industrial Engineering Department, Federal University of Rio Grande do Sul, Brazil
  3. University of Technology, Warsaw, Poland
Download PDF Download RIS Download Bibtex

Abstract

The industrial revolution taking place since the 18th century has brought the global economies to the stage of mass production, mass industrialization and spreading ideas connected with its efficiency. The most famous of its kind is Fordism and its modern variations called PostFordism or Neo-Fordism. We can still see traditional way of producing things in some parts of the world, and the leading economies are using Ford’s ideas or the modifications of the Ford’s concepts. But there is a question about the place of these models in the modern economy, especially because mass-production causes mass-waste and modern societies has woken up to the reality of the global pollution, climate change or just the simple fact that the amount of the raw materials is limited. The social mood is slowly changing so there should be a change to the way we produce and consume things as well. There is a question: can we proceed within existing models or should we think outside the box so we can invent more suitable way of looking at efficiency and effectiveness. The objective of this paper is to contribute to the discussion about the future of how are we going to produce things. It is based on the literature review considering Fordism and its variations, Product Life Cycle facing issues like pollution, massive waste and changes in modern economy, as well as on the case study of implementing waste reduction activities in the product’ design phase in the industrial plant based in one of the EU countries – Poland.
Go to article

Authors and Affiliations

Mariusz Bednarek
1 2
Aneta Parkes
3

  1. Wyższa Szkoła Bankowa, Warszawa, Poland
  2. Universidad Autonoma de Chile, Temuco, Chile
  3. Społeczna Akademia Nauk, Łódź, Poland
Download PDF Download RIS Download Bibtex

Abstract

As the corporate culture and re/setting of employer – employee relations is crucial due to changes in workplace due to impact of COVID-19, this article aims to identify types of organizational culture, and to find impact on the implementation of HR activities and employer branding, including classification of organizations by their defined strategies. A model of organizational culture, including its systematic relationships, is proposed and tested using a sample of 402 organizations across sectors operating in the Czech Republic as a characteristic economy in Central Eastern European region. This model includes different dimensions of internal brand management and manifestations of organizational culture. Data are analyzed using bivariate and multivariate statistics. Identification of a suitable type of organizational culture leads towards successful employer branding and work engagement; brand identification and communication directly raise positive perception of organizational culture. Three major areas of use of organizational culture and branding have been identified: re-setting of personnel processes depending on the change of organization’s size, on the decline in labor productivity and on organizational mergers, changes in scope of business and in market position. The results suggest that orientation on employee engagement is a better predictor of (positive) organizational culture than increase in productivity. Furthermore, the results explain supportive roles of organizational culture towards customers and employees. The results extend theory by empirical analysis of organizational culture and internal brand management from the employers’ perspective.
Go to article

Authors and Affiliations

Hana Urbancová
1
Lucie Depoo
2

  1. University of Economics and Management, Department of Human Resources
  2. University of Economics and Management, Department of Management

This page uses 'cookies'. Learn more