Lih-Sheng (Tom) Turng Professor Address/E-mail Program Affiliations Education Fields of Interest Publications Awards & Honors Summary

Contact Information

1051 Mechanical Engineering Building 1513 University Avenue Madison, WI 53706

Tel: 608/262-0586 Fax: 608/265-2316 E-mail: turng@engr.wisc.edu

Program Affiliations

• Mechanical Engineering

• Manufacturing Systems Engineering Program
• Polymer Engineering Center
• Polymer Processing Research Group
• Rheology Research Center

Education

• BS, 1981, National Taiwan University
• MS, 1987, Cornell University
• PhD, 1990, Cornell University

Fields of Interest

• injection molding and innovative plastics manufacturing processes
• microcellular injection molding (MuCell process)
• nanocomposites and electro-active polymers (EAP's)
• computer-aided engineering (CAE) and numerical simulation
• design and process optimization
• bio-based polymers and tissue engineering scaffolds
• intelligent injection molding control
• material characterization for plastics and metals
• net-shape die casting using semi-solid alloys
• Internet-based collaboration for design and manufacturing

Publications

• Selected Publications
  1. Turng, L. S. and Wang, K. K., “A Computer-Aided Cooling-Line Design System for Injection Molds,” ASME Journal of Engineering for Industry, 112, pp. 161-167, 1990.
  2. Turng, L. S. and Wang, K. K., “Rheological Behaviour and Modelling of Semi-Solid Sn-15%Pb Alloy,” Journal of Materials Science, 26, pp. 2173-2183, 1991.
  3. Turng, L. S., Wang, V. W., and Wang, K. K., “Numerical Simulation of the Coinjection Molding Process,” ASME Journal of Engineering Materials and Technology, 115, pp. 48-53, 1993.
  4. Turng, L. S. and Wang, V. W., “On the Simulation of Microelectronic Encapsulation with Epoxy Molding Compound,” Journal of Reinforced Plastics and Composites, 12, pp. 506-519, 1993.
  5. Himasekhar, K., Turng, L. S., Wang, V. W., Chiang, H. H., and Wang, K. K., “Current Trends in CAE: Simulations of Latest Innovations in Injection Molding,” Advances in Polymer Technology, 12, n3, pp. 233-241, 1993.
  6. Turng, L. S., “Computer-Aided-Engineering for Gas-Assisted Injection Molding, Plastics Engineering, pp. 27-30, September 1993.
  7. Turng, L. S., “Development and Application of CAE Technology for the Gas-Assisted Injection Molding Process,” Advances in Polymer Technology, 14, n1, pp. 1-13, 1995.
  8. Nie, Y. Y., Turng, L. S., and Wang, K. K., “Structural Analysis for Gas-Assisted Injection-Molded Parts,” Advances in Polymer Technology, 16, n3, pp. 159-173, 1995.
  9. Turng, L. S., Chiang, H. H., and Stevenson, J. F., “Optimization Molding at Low Injection Pressure,” Plastics Engineering, pp. 33-36, October 1995.
  10. Turng, L. S., “Computer-Aided Engineering (CAE) for the Gas-Assisted Injection Molding Process,” Chapter 2, Innovation in Polymer Process: Molding, ed. Stevenson, J. F., Hanser Publisher, 1996.
  11. Wang, H. P., Turng, L. S., and Marchal, J., ed., CAE and Intelligent Processing of Polymeric Materials, 416 pp., MD-Vol. 79, The American Society of Mechanical Engineers (ASME), 1997.
  12. Turng, L. S., C-Mold Design Guide – A Resource for Plastics Engineers, 336 pp., C-MOLD, Ithaca, New York, 1994-1998.
  13. Turng, L. S. and DeAugistine, D., “A Web-based Knowledge Management System for the Injection Molding Process,” Plastics Engineering, pp. 47-50, December 1999.
  14. Turng, L. S., Wang, H. P., Ramani, K., and Benard, A., ed., CAE and Related Innovations for Polymer Processing, 341 pp., MD-Vol. 90, The American Society of Mechanical Engineers (ASME), 2000.
  15. Wang, K. K. and Turng, L. S., “Polymer Injection Moulding: C-MOLD,” Encyclopedia of Materials: Science and Technology, Buschow, K. H. J., et al. ed., Elsevier Science, to be published in 2001.
  16. Turng, L. S., “Special and Emerging Injection Molding Processes,” Journal of Injection Molding Technology, Vol. 5, No. 3, 2001.
  17. Turng, L. S., “Special Injection Molding Processes,” Chapter 9, Injection Molding Handbook, Osswald, T. A., Turng, L. S., and Gramann, P. eds., Hanser Publisher, October 2001.
  18. Osswald, T. A., Turng, L. S., and Gramann, P. eds., Injection Molding Handbook, Hanser Publisher, October 2001.
  19. Turng, L. S. and Kharbas, H., "Effect of Process Conditions on the Weld-line Strength and Microstructure of Microcellular Injection Molded Parts," Polymer Engineering and Science, Vol. 43, n1, pp. 157-168, 2003.
  20. Turng, L. S. and Peic, M., "Computer-aided Process and Design Optimization for Injection Molding," Journal of Engineering Manufacture, Proceedings of the Institution of Mechanical Engineers Part B, Vol. 216, nB12, pp. 1523-1532, 2002.
  21. Turng, L. S., Peic, M., and Bradley, D. K., "Process Simulation and Optimization for Injection Molding - Experimental Verifications and Field Applications," Journal of Injection Molding Technology, Vol. 6, n2, pp. 143-155, 2002.
  22. Kharbas, H., Nelson, P., Yuan, M., Gong, S., Turng, L. S., and Spindler, R., "Effects of Nano-fillers and Process Conditions on the Microstructure and Mechanical Properties of Microcellular Injection Molded Polyamide Nanocomposites," Polymer Composites, Vol. 24, n6, pp. 655-671, 2003.
  23. Kharbas, H. and Turng, L. S., "Development of a Hybrid Solid-Microcellular Co-Injection Molding Process," International Polymer Processing, Vol. 19, n1, pp. 77-86, 2004.
  24. Turng, L. S. and Kharbas, H., “Effect of Process Conditions on the Weld-line Strength and Microstructure of Microcellular Injection Molded Parts,” Polymer Engineering and Science, Vol. 43, n1, pp. 157-168, 2003.
  25. Kharbas, H., Nelson, P., Yuan, M., Gong, S., Turng, L. S., and Spindler, R., “Effects of Nano-fillers and Process Conditions on the Microstructure and Mechanical Properties of Microcellular Injection Molded Polyamide Nanocomposites,” Polymer Composites, Vol. 24, n6, pp. 655-671, 2003.
  26. Kim, S. and Turng, L. S., “Developments of Three-Dimensional Computer-aided Engineering (CAE) Simulation for Injection Molding,” Modelling and Simulation in Materials Science and Engineering, Vol. 12, pp. S151-173, 2004.
  27. Yuan, M., Turng, L. S., Caulfield, D., Hunt, C., and Spindler, R., “Study of Injection Molded Microcellular Polyamide-6 Nanocomposites,” Polymer Engineering and Science, Vol. 44, n4, pp. 673-686, 2004.
  28. Gopalakrishna, V., Bhaghavatula, A., and Turng, L. S., “A Web-based Knowledge Management System (KMS),” Journal of Systemics, Cybernetics and Informatics, Vol. 2, n1, 2004 (http://www.iiisci.org/Journal/SCI/Abstract.asp?var=&id=P915105).
  29. Yuan, M., Turng, L. S., Gong, S., Winardi, A., and Caulfield, D., “Crystallization Behavior of Polyamide-6 Microcellular Nanocomposite,” Journal of Cellular Plastics, Vol. 40, n5, pp. 397-410, 2004.
  30. Winardi, A., Yuan, M., Gong, S., Turng, L. S., “Core-Shell Rubber Modified Microcellular Polyamide-6 Composite,” Journal of Cellular Plastics, Vol. 40, n5, pp. 383-396, 2004.
  31. Chandra, A., Gong, S., Turng, L. S., and Gramann, P., “Cell Development in Microcellular Injection Molded Polyamide-6 Nanocomposite and Neat Resin,” Journal of Cellular Plastics, Vol. 40, n5, pp. 371-382, 2004.
  32. Osorio, A. and Turng, L. S., “Mathematical Modeling and Numerical Simulation of Cell Growth in Injection Molding of Microcellular Plastics,” Polymer Engineering and Science, Vol. 44, n12, pp. 2274-2287, 2004.
  33. Chandra, A., Gong, S., Turng, L. S., Gramann, P., and Cordes, H. “Microstructure and Crystallography in Microcellular Injection Molded Polyamide-6 Nanocomposite and Neat Resin,” Polymer Engineering and Science, Vol. 45, n1, pp. 52-61, 2005.
  34. Yuan, M., Winardi, A., Gong, S., and Turng, L. S., “Effects of Nano and Micro Fillers and Processing Parameters on Injection Molded Microcellular Composites,” Polymer Engineering and Science, Vol. 45, n6, pp. 773-788, 2005.
  35. Chen Z. B. and Turng, L. S., “Current Developments of Injection Molding Process and Quality Control,” Advances in Polymer Technology, Vol. 24, n3, pp.165-182, 2005.
  36. Gong, S., Yuan, M., Chandra, A., Kharbas, H., Osorio, A. and Turng, L. S., “Microcellular Injection Molding,” International Polymer Processing, Vol. 20, n2, pp. 202-214, 2005.
  37. Kramschuster, A., Cavitt, R., Ermer, D., Chen, Z. B., Turng, L. S., “Quantitative Study of Shrinkage and Warpage Behavior for Microcellular and Conventional Injection Molding,” Polymer Engineering and Science, Vol. 45, n10, pp. 1408-1418, 2005.
  38. Hackl, C., Tang, H. Y., Lorenz, R. D., Turng, L. S., and Schröder, D., “A Multi-Domain Model of Planar Electro-Active Polymer Actuators,” IEEE Transactions on Industry Applications, Vol. 41, n5, pp. 1142-1148, 2005.
  39. Yuan, M. and Turng, L. S., “Microstructure and Mechanical Properties of Microcellular Injection Molded Polyamide-6 Nanocomposites,” Polymer, Vol. 46, pp. 7273-7292, 2005.
  40. Yuan, M., Turng, L. S., and D. Caulfield, “Crystallization and Thermal Behavior of Microcellular Injection Molded Polyamide-6 Nanocomposites,” Polymer Engineering and Science, 46, n7, pp. 904-918, 2006
  41. Shen, C., Kramschuster, A., Ermer, D., and Turng, L. S. “Study of Shrinkage and Warpage in Microcellular Co-Injection Molding,” International Polymer Processing, Vol. 46, n5, pp. 569-581. 2006.
  42. Chen, Z. B., Giacomin, A. J., and Turng, L. S., “Flash,” Polymer Engineering and Science, Vol. 46, n3, pp. 241-247, 2006.
  43. Chen, Z. B. and Turng, L. S., “Adaptive Online Quality Control for Injection Molding by Monitoring and Controlling Mold Separation,” Polymer Engineering and Science, Vol. 46, n5, pp. 569-580, May 2006.
  44. Kim, S. and Turng, L. S. “Three-Dimensional Numerical Simulation of Injection Molding Filling of Optical Lens and Multi-scale Geometry Using Finite Element Method,” Polymer Engineering and Science, 46, n9, pp. 1263-1274, 2006.
  45. Li, T., Turng, L. S., and Gong, S., “Polylactide, Nanoclay, and Core-shell Rubber Composites,” Polymer Engineering and Science, 46, n10, pp. 1419-1427, 2006.
  46. Yuan, M. and Turng, L. S., “Studies of Microcellular Nanocomposites with Supercritical Fluid Assisted Injection Molding Process,” Plastics, Rubber and Composites: Macromolecular Engineering, 35, n3, pp. 129-138, 2006.
  47. Li, G., Li, H., Turng, L. S., Gong, S., and C. Zheng, “Measurement of Gas Solubility and Diffusivity in Polylactide,” Fluid Phase Equilibria, 246, n1-2, pp. 158-166, 2006.
  48. Zhou, J. and Turng, L. S., “Single and Multi Objective Optimization for Injection Molding Using Numerical Simulation with Surrogate Models and Genetic Algorithms,” International Polymer Processing, 21, n5, pp. 509-520, 2006.
  49. DeCicco, M., Turng, L. S., Li, X., and Perepezko, J., “Semi-Solid Casting of Metal Matrix Nanocomposites,” Journal of Solid State Phenomena, 116-117, pp. 478-483, 2006.
  50. Kramschuster, A., Cavitt, R., Ermer, D., Chen, Z. B., and Turng, L. S., “Effect of Processing Conditions on Shrinkage and Warpage and Morphology of Injection Molded Parts Using Microcellular Injection Molding,” Plastics, Rubber and Composites: Macromolecular Engineering, 35, n5, pp. 198-209, 2006.
  51. Zhou, J. and Turng, L. S., “Three-Dimensional Numerical Simulation of Injection Molding Filling with Finite Volume Method and Parallel Computing,” Advances in Polymer Technology, 25, n4, pp. 247-258, 2007.
  52. Chandra, A., Turng, L. S., Gong, S., Hall, D. C., Caulfield, D. F., and Yang, H. “Study of Polystyrene/Titanium Dioxide Nanocomposites via Melt Compounding for Optical Applications,” Polymer Composites, 28, n2, pp. 241-250, 2007.
  53. Kramschuster, A., Gong, S., Turng, L. S., Li, T., and Li, T. “Injection Molded Solid and Microcellular Polylactide and Polylactide Nanocomposites,” Journal of Biobased Materials and Bioenergy, 1, n1, pp. 37-45, 2007.
  54. Zhou, J. and Turng, L. S., “Process Optimization of Injection Molding Using an Adaptive Surrogate Model with Gaussian Process Approach,” Polymer Engineering and Science, 47, n5, pp. 684-694, 2007.
  55. Yuan, M., Song, Q. and Turng, L. S., “Spatial Orientation of Nanoclay and Crystallite in Microcellular Injection Molded Polyamide-6 Nanocomposites,” Polymer Engineering and Science, 47, n6, pp. 765-779, 2007.
  56. Chen, Z. B. and Turng, L. S., “Injection Molding Quality Control by Integrating Weight Feedback into a Cascade Closed-Loop Control System,” Polymer Engineering and Science, 47, n6, pp. 852-862, 2007.
  57. Chandra, A., Turng, L. S., Gopalan, P., Rowell, R. M., and Gong, S., “Semitransparent Poly(styrene-r-maleic anhydride)/Alumina Nanocomposites for Optical Applications,” Journal of Applied Polymer Science, 105, n5, pp. 2728-2736, 2007.
  58. Zhou, J. and Turng, L. S., “Adaptive Multi-Objective Optimization of Process Conditions for Injection Molding Using Gaussian Process Approach,” Advances in Polymer Technology, 26, issue 2, pp. 71-85, 2007.

Selected Awards, Honors and Societies

• The Liu Memorial Award for academic achievement and leadership, Cornell University, 1986
• Two Best Paper Awards, Society of Plastics Engineers (SPE) Annual Technical Conference, 1992
• 3M Non-tenured Faculty Award, 2003, 2004
• Best Paper in the Application of Education Technologies session at the International Conference on Education and Information Systems (EISTA '03), 2003
• American Society of Mechanical Engineers (ASME)
• Society of Plastics Engineers (SPE) -- Fellow, Board of Directors Member and Chair-elect, Injection Molding Division
• Polymer Processing Society (PPS)

Summary

Professor Turng's research interests cover various areas that help deliver quality plastic products within compressed schedules inexpensively. These include computer-aided engineering (CAE), material characterization, design, modeling, simulation, optimization, process development, and application of Internet and Web technologies for knowledge management. He conducts research on advanced plastics manufacturing processes such as gas-assisted injection molding, co-injection molding, microcellular injection molding (MuCell process), nanocomposites, microinjection molding, IC-chip packaging (microelectronic encapsulation), thermal analysis of injection molding, and an innovative net-shape die casting process using semi-solid (partially solidified) alloys.

Turng had been with C-MOLD, a company recognized for its advanced plastics CAE simulation packages, for more than 10 years before joining UW-Madison in the summer of 2000. At C-MOLD, Turng was the Principal Investigator for four Small Business Innovation Research (SBIR) Phase I, Phase II projects, and research grants from the National Science Foundation and the New York State Science and Technology Foundation.

Turng is the lead author of the book entitled "C-MOLD Design Guide - A Resource for Plastics Engineers," which covers process physics, material properties, design rules, troubleshooting, and judicious interpretation of simulation results for plastics design and manufacturing. From 1994 through 2000, more than five thousand copies have been printed and distributed. He was also the Task Leader of C-MOLD KnowHow!, the first web-based Knowledge Management System specifically for the plastics industry. As a result of a team effort, C-MOLD KnowHow! has won the 1999 Technology of the Year Award from Industry Week and the Best Product of 1999 in computer productivity tools category from Design News.

Turng is currently the Co-Director of Polymer Engineering Center and Engineering Polymer Industrial Consortium at UW-Madison. He is currently the Chair of the Education Committee and a member of the Board of Directors with the Injection Molding Division of the Society of Plastics Engineers (SPE). He also serves on the Advisory Board of Journal of Advances in Polymer Technology and the Editorial Board for the Journal of Cellular Plastics and Journal of Biobased Materials and Bioenergy. A member of ASME, SPE, ASEE, PPS, SOR, and a Fellow member of SPE, Professor Turng has chaired and organized two ASME International Mechanical Engineering Congress and Exposition (IMECE) symposia on CAE and Innovations in Polymer Processing.

Copyright 2008 The Board of Regents of the University of Wisconsin System Date last modified: 16-Jan-2008 Content by: turng@engr.wisc.edu Accessibility Web services Thank you for visiting http://www.engr.wisc.edu/me/faculty/turng_lih-sheng.html UPDATE PROFILE