Pradeep Rohatgi - UWM Distinguished Professor



Contact Information

Office Address:
EMS 574
3200 North Cramer Street
Milwaukee, WI 53211
Phone: 414-229-4987
Fax: 414-229-6958
Email: prohatgi@uwm.edu

Mailing Address:
P.O. Box 784
Department of Materials Engineering
University of Wisconsin-Milwaukee
Milwaukee, WI 53201

Pradeep Rohatgi
Education

Sc.D., Materials Science, Massachusetts Institute of Technology, 1964
M.S., Materials Science and Engineering, MIT, 1963
B.S., Metallurgical Engineering, Banaras University, 1961

Research Interests

Foundry Technology, Solidification Processing, Composite Materials, Alloy Development, specialty Aluminum and Steels, Bulk Nanostructured Alloys and Nanocomosites, Rapid Mobile Manufacture, and Materials Policy.

Selected Publications
  1. Matsunuga, T., Hardcastle, S., Kim, J.K., and Rohatgi, P.K., “Crystallinity and Selected Mechancial Properties of Fly Ash Composites,” Materials Sci. Eng.(USA), Vol. A325 (2002), pp., 333-343.
  2. Rohatgi, P.K., Kim.,J.K., Robertson, D.P., Gajdardziska, M. , “Age-Hardening of Cast Aluminum-Fly Ash Composites, Metallurgical and Materials Transactions, Volume 33A, pp 1541-1547, May 2002.
  3. Sobczak, J., Slawinski, Z. Daralak., Asthana, R., and Rohatgi, P., "Thermal Fatigue Resistance of Discontinuously Reinforced Cast Aluminum-Matrix Composites"; Journal of Engineering Performance, Vo. 11(6), 2002, pp. 595-602.
  4. D.P.Robertson, M. Gajdardziska-Josifovska, J. K. Kim, R.Q. Guo, P. K. Rohatgi: “Electron Microscope Characterization of Aluminum Alloy – Fly Ash Composites”, Microscopy and Microanalysis 2002, CD pp. 1278-1279.
  5. Rohatgi, P.K., Thakkar, R.B., Kim, J.K., and Weiss, D.W., “Scatter in Tensile Properties of Cast A359-SiCp Aluminum Alloys,” 03-067, AFS Transactions, 2003.
  6. Rohatgi, P.K., Thakkar, R.B., Kim, J.K., and Schaffer, H., “Fatigue Behavior of Permanent Mold Cast A359-20% SiC Composite,” 03-151, AFS Transactions, 2003.
  7. Rohatgi, P.K., and Weiss, D.W., “Casting of Aluminum-Fly Ash Composites for Automotive Applications,” 2003-01-0825, SAE Transactions, 2003.
  8. Kestursayta, M., Kim, J.K., and Rohatgi, P.K., “Wear Performance of Copper-Graphite Composite and a Leaded Copper Alloy”, Materials Science and Engineering, Vol. A339, 2003, pp. 150-158.
  9. J.H. Choi, J. K. Oh, C.O. Choi, J. K. Kim, P. K. Rohatgi: “Effect of Bi on Formation of Microstructure and Mechanical Properties of Ductile Iron Castings with Thin Wall Section”;  AFS Transaction, 04-068, 2004.
  10. P. K. Rohatgi, J. K. Kim, D. Weiss, D. Presny: “Prototype Castings of Aluminum Fly Ash Alloys”; AFS Transactions, 04-065, 2004.
  11. J.O. Choi, J.Y. Kim,C.O. Choi, J.K. Kim, P.K. Rohatgi, “Effect of Rare Earth Element on Microstructure formation and Mechanical Properties of Thin Wall Ductile Iron Castings”, Materials Science and Engineering, A 383 (2004) 323-333.
  12. A. Daoud, M.T. Abou-Elkhair, P. Rohatgi, “Wear and Friction Behavior of Near Eutectic Al-Si+ZrO2 or WC Particle Composites”, Composites Science and Technology, 64 (2004) 1029-1040.
  13. P.K. Rohatgi, R.B. Thakkar, J.K. Kim and A. Daoud, “Scatter and Statistical Analysis of Tensile Properties of Cast SiC Reinforced A359 Alloys”, Materials Science and Engineering A, vol. 398, Issues 1-2,  Pages 1-14, April 2005 Rated No. 7 of the 25 hottest articles published in Material Science and Engineering A
  14. P.K. Rohatgi, J.K. Kim, N. Gupta, Simon Alaraj and A. Daoud, “Compressive Characteristics of A356/fly ash Cenosphere Composites Synthesized by Pressure Infiltration Technique,” Composites Part A: Applied Science and Manufacturing, vol. 37, pp. 430-437, 2006
  15. Rohatgi, P. K., N. Gupta and Simon Alaraj, “Thermal Expansion of Aluminum/Fly Ash Cenosphere Synthesized by Pressure Infiltration Technique,” Journal of Composite Materials, Vol. 40, No. 13, 2006, pp. 1163-1174.
  16. Lee, K.E., Amano, R.S., Rohatgi, P.K., Lee E. "Metal Matrix Composite Solidification in the Presence of Cooled Fibers: Numerical Simulation and Experimental Observation" accepted for publication in Journal of Heat and Mass Transfer, 2006.
  17. H.G.Seong, H.F. Lopez, and P.K. Rohatgi, “Microsegregation During Solidification of Graphite Fiber Reinforced Aluminum Under External Heat Sinks”, Accepted for publication as a Technical Publication in Metallurgical and Materials Transactions, 2006.
  18. H.G. Seong, H. Lopez, Marija Gajdardziska-Josifovska, P.K. Rohatgi, "Nucleation Effects in Thermally Managed Graphite Fiber Reinforced Al-Cu and Al-Si Composites."  Accepted for publication as a Technical Publication in Metallurgical and Materials Transactions A, 2006
  19. P.K. Rohatgi, R. Asthana and N. Gupta, “Solidification Processing of Metal-Matrix Nanocomposites”, Abstract accepted for publication in IMR, 2006.
  20. P.K. Rohatgi, S. Alaraj, R. Thakkar, and A. Daoud, “Fatigue properties of permanent mold cast SiC reinforced A355 Si alloy under strain controlled conditions”, Submitted to Journal of Composites Science & Technology, 2006.
  21. V.K. Tiwari, P.K. Rohatgi, and N. Gupta, “Squeeze Infiltration processing of Ni coated Carbon Fiber Reinforced Al-2014 composite” Journal of Materials Science, 2006, Accepted, in press.
  22. P.K. Rohatgi, D. Weiss, N. Gupta, “Applications of fly ash in synthesizing low cost metal matrix composites for automotive engineering applications.”  JOM, Vol. 58, No. 11, 2006, Accepted for publication in Journal of Composites Science and Technology, 2007
  23. H.G. Seong, H.F. Lopez, D.P. Robertson, P.K. Rohatgi, “ Interface Structure in Carbon and Graphite Fiber Reinforced 2014 Aluminum Alloy Processed with Active Fiber Cooling,” Accepted for publication in Materials Science and Engineering, 2007
  24. Rohatgi, P.K., “Use of Lightweight Metal Matrix Composites for Transportation Applications in India”, Proceedings of Third International Conference on “Synergy of Fuel and Automotive Technology for Cleaner Environment” SAE 2004 India Mobility Conference, January 16-18, 2004.
  25. Lee, E.K., Amano, R.S., Xie, J., and Rohatgi, P.K., “Parametric Study of MMC Solidification in the Presence of Cooled-Fibers—Numerical Simulation and Experimental Validation,” 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT-FED2004-56075, July 2004, Charlotte, NC.
  26. Lee, E.K., Amano, R.S., Xie, J.H. and Rohatgi, P.K., “CFD Simulation and Experimental Validation of MMC Solidification in the Presence of Cooled Fibers,” 2004 International Mechanical Engineering Congress, IMECE2004-60290, November 2004, Anaheim, CA.
  27. Rohatgi, P. K., Alaraj, S. and Gupta N., “Pressure infiltration synthesis of lightweight syntactic aluminum matrix composites.”, In proceedings of American Society for Composites 20th Annual Technical Conference, October 9-11, 2005, Drexel University, PA. Paper # 95.
  28. Amano, R.S. and Rohatgi, P.K., “Synthesis of Metal Matrix-Nanoparticle Composites by Stir Mixing,” DMII, NSF Grantee’s Conference, January 2005, Phoenix, Arizona.
  29. M.A. Belger, Rohatgi, P.K., and N. Gupta, “Aluminum Composite Castings Incorporating Used and Virgin Foundry Sand as Particle Reinforcements.”  “Solidification processing of Metal Matrix Composites, Rohatgi Honorary Symposium” Edited: N.Gupta and W.Hunt TMS, 2006. p.195.
  30. Deo Nath, N. Prasad, P.K. Rohatgi, “Wear of Lead Free Cast Copper Alloy Graphite Particle Composite. “Solidification processing of Metal Matrix Composites, Rohatgi honorary Symposium” Edited: N.Gupta and W.Hunt TMS ,March 2006. p.283.
  31. P.K. Rohatgi, Satyanarayana Gundappa Kestur, Marimutha Raman Pillai, Chandrasekhara Bellembettu Pai, Jeongkyon Kim, Mahesh Kestursatya, “ Developments in Science & Technology of Cast Aluminum Matrix Composites – “Solidification processing of Metal Matrix Composites, Rohatgi honorary Symposium” Edited: N.Gupta and W.Hunt TMS, 2006. p.51.
  32. P.K. Rohatgi, Satyanarayana Gundappa Kestur, Marimuthu Raman Pillai, Chandrasekhara Bellembettu Pai, “Synthesis of Stir Cast Aluminum Alloy Matrix Composites – Indian Contributions.” Solidification processing of Metal Matrix Composites, Rohatgi honorary Symposium. ” Edited: N.Gupta and W.Hunt TMS, March 2006 p.15
  33. P.K. Rohatgi, V. Tiwari, and N. Gupta. “A Modified Squeeze Infiltrationo Process to Synthesize Nickel Coated Carbon Fiber reinforced Al-2014 Composite.” “ Solidification processing of Metal Matrix Composites, Rohatgi honorary Symposium. ” Edited: N.Gupta and W.Hunt TMS, 2006 p.205
  34. A. Daoud , M.T. Abou-Elkhair , M. Abdel-Aziz and P. Rohatgi,  Fabrication and Microstructure of Magnesium Alloy-Microballoon Fly Ash Composites'', Advancing with  composites-2005 Conference, Naples, Italy, October 11-14, 2005.
  35. R.S. Amano, P.K. Rohatgi, Dejan Ristic, Pradeep Mohandas, Zhenyu Xu, Ashwani K. Gupta, “A Study of Turbulent Flow Phenomena in Laser Engineered Net Shaping Rapid Manufacturing Using Computational Fluid Dynamics Technology.”  Proceedings of IMECE: 2006 ASME International Mechanical Engineering Congress and Exposition, Nov. 5-10, Chicago, IL.
  36. P.K. Rohatgi, N. Gupta, D. Weiss, D. Miracle, “Sythesis and applications of catst metal matri composites and syntatctic foams.”  In Proceedings of SAMPE 2006 Fall Technical Conference, Dallas, TX, Nov. 6-9, 2006.
  37. P.K. Rohatgi, V.K. Tiwari, N. Gupta, “Thermal Management of Cast Carbon Fiber-Al Composites”  In Proceedings of TMS Annual Meeting 2007, February 25-March 1, 2007, Orlando, FL.