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Manufacturing and Process Management

The research in Manufacturing Engineering is carried out in the field of machine tools, machining processes and manufacturing systems. It is mainly directed towards improved machining accuracy, productivity and optimal production scheduling as well as process management. The experimental and theoretical studies are focused on thermoelastic effects and are carried out on both fundamental and applied levels. The research involves extensive use of computers for data acquisition, simulation and computer-aided engineering analysis.

The studies directed towards production systems led to the development of a model for optimal distribution of jobs on machine tools for required time-based input-output schedule, which is expected to reduce the lead time and to increase the utilization level of machine tools.

Process management investigates the improvement of productivity and cycle time for manufacturing activities. Knowledge work activities are emphasized, e.g., design, production planning, concurrent engineering. An improved method for estimation of effort and duration of projects had been developed and is being used by companies. Recent studies in concurrent engineering have led to the better understanding of how to design new product development processes. New architectures and metrics have been developed for manufacturing planning systems.

More recently research has started on the development of systems for cycle-to-cycle adaptive control for forming processes and for factory-wide control.

PROFESSORS L. Kops, D.Sc.Eng. (Krakow Tech. U.) V. Thomson, Ph.D. (McMaster), Werner Graupe Professor of Manufacturing Automation

Professors

  • H. Attia, Ph.D. (McGill)
  • L. Kops, D.Sc.Eng. (Krakow Tech. U.)
  • V. Thomson, Ph.D. (McMaster), Werner Graupe Professor of Manufacturing Automation.

Research areas

  • Analysis and control of thermoelastic behaviour of a machine-tool-workpiece system [1-6]
  • Supporting thermometric and interfacial studies [7-8]
  • Optimization in production scheduling [9-12]
  • Computer Integrated Manufacturing [13-16]
  • Process management [17-21]
  • Project estimation [22-24]

Publications

1. Kops, L., "Towards improved prediction of turning accuracy", Proceedings of OM2000 - International Scientific Conference on Machining of Materials - Present State and Trends of Development, Krakow TU, Krakow, Poland, May 2000, vol II, pp. 123-130
2. Kops, L. and Arenson, M., "Determination of convective cooling conditions in turning", Annals of CIRP, vol 48/1, 1999, pp. 47-52
3. Kops, L. and Arenson, M., "Convective heat transfer coefficients in turning", Proceedings 15th Brazilian Congress of Mechanical Engineering - COBEM '99, U. de Campinas, Aquas de Lindoia, Sao Paolo, Brazil, November 1999, CD-ROM
4. Kops, L. and Arenson, M., "Convective data in turning - a key to the accuracy prediction", Proceedings International Conference on Quality Manufacturing, U. of Stellenbosch and Rand Afrikaans U., Stellenbosch, South Africa, January 1999, pp. 46-51
5. Kops, L., Gould, M. and Mizrach, M., "The effect of workpiece support on turning accuracy", Proc. CIRP Int. Seminar on Improving Machine Tool Performance, San Sebastian, Spain, July 1998, v.2, pp. 569-574
6. Kops, L., Gould, M., Mizrach, M. and Cameron, A., "Determination of the deflection of an axisymmetric noncylindrical workpiece in turning", Proc. Int. Conf., on Machining and Measurements of Sculptured Surfaces, MMSS'97, The Institute of Metal Cutting (IOS), Krakow, Poland, November 1997, (published 1998) pp. 47-55

7. Attia, M.H., Cameron, A., and Kops, L., "Distortion in the thermal field around inserted thermocouples in the experimental interfacial studies - Part IV: End effect", Trans. ASME, J.Mnfg. Science and Eng., 2002, v.124, n. 1, pp. 135-145
8. Attia, M.H. and Kops, L., "Distortion in the thermal field around inserted thermocouples in the experimental interfacial studies - Part III: Experimental and numerical verification", Trans. ASME, J.Eng.Ind., 1993, v. 115, n. 4, pp. 444-449

9. Kops, L. and Massicotte, P., "Priority factors in optimization of job allocation on machine tools", Proceedings 2000 International CIRP Design Seminar on Design with Manufacturing: Intelligent Design Concepts, Methods and Algorithms, Technion, Haifa, Israel, May 2000, pp. 335-339
10. Balazinski, M. and Kops, L., "Intelligent job allocation on machine tools using fuzzy logic", Proc. First World Congress on Intelligent Mnfg., Univ. of Puerto Rico, February 1995, v. 2, pp. 950-961
11. Kops, L. and Natarajan, S., "Time partitioning based on the job flow schedule - a new approach to optimum allocation of jobs on machine tools", Int. J. of Advanced Manufacturing Technology, Springer-Verlag London Ltd., 1994, v. 9, n. 3, pp. 204-210
12. Kops, L. and Natarajan, S., "Dynamic optimization of job distribution on machine tools using time decomposition into constant job-mix stages", Annals of CIRP, 1992, v. 41/1, pp. 485-488

13. Thomson V. and Graefe U. "CIM - A Manufacturing Paradigm", International Journal of Computer Integrated Manufacturing, 1989, Vol 2, No 5, pp 290-297
14. Graefe U. and Thomson V. "A reference model for production control", International Journal of Computer Integrated Manufacturing, 1989, Vol 2, No 2, pp. 86-93
15. Chan, A. W., Satir, A., Thomson, V., "Reduction of Cycle Time in Manufacturing Using Simulation", Computer Applications in Production and Engineering, Ed. F. Plonka, G. Olling, Chapman & Hall, 1997, pp. 359-369
16. Jin, G., Thomson, V. "A Framework for Manufacturing Planning and Scheduling in Engineered-to-Order Environments", 27th International Conference on Computers & Industrial Engineering, October, 2000, Beijing, CD-ROM

17. Thomson, V. "Process Management in Manufacturing", Control Engineering Practice, 1995, Vol. 3, No. 4, pp. 537-543
18. Klapsis, M., Thomson, V., "Information Transfers as a Metric for Engineering Processes", Computer Applications in Production and Engineering, Ed. F. Plonka, G. Olling, Chapman & Hall, 1997, pp. 248-258
19. Bhuiyan, N., Thomson, V., "Formalizing and Evaluating the Concurrent Engineering Process", Proceedings of the Canadian Society for Mechanical Engineering 1998, Vol 3, pp.1-6
20. Lari, K. A., Thomson, V., "Process Monitoring for Knowledge Work Processes", The 9th IFAC Symposium on Information Control in Manufacturing, France1998, pp. 499-504
21. Bhuiyan, N., Thomson, V., Gerwin, D. "Evaluating the Performance of Concurrent Engineering Processes", Proceedings of the 7th ISPE International Conference on Concurrent Engineering: Research and Applications, Lyon, France, July 2000, pp.157-164

22. Bashir, H., Thomson, V., "Estimating Design Complexity", Journal of Engineering Design, 1999, Vol 10, No 3, pp. 247-257
23. Bashir, H., Thomson, V., "Metrics for Design Projects: A Review", Design Studies, 1999, Vol 20, No 3, pp. 263-277
24. Bashir, H., Thomson, V., "Models for Estimating Design Effort and Time", Design Studies, 2001, Vol. 22, pp. 141-155