Dr. Jun Zhou

Assistant Professor of Mechanical Engineering

Office Location:

Burke 250

Phone:

(814) 898 6662

Email:

juz17@psu.edu

Profile

Biography

Dr. Jun Zhou is an assistant professor of Mechanical Engineering at Penn State Erie, the Behrend College. He received his B.S. in Thermal Engineering in 1994 from the University of Science and Technology Beijing, China and his Ph.D. in Mechanical Engineering in 2003 from the University of Missouri Ï Rolla.

Dr. Zhou worked as a postdoctoral fellow in the Department of Mechanical and Aerospace Engineering at University of Missouri Ï Rolla for three years and as an assistant professor at Georgia Southern University for two years prior to his employment at Penn State Behrend. Dr. Zhou conducts active research in the areas of laser-based manufacturing and material processing, multi-scale modeling of energy transfer, and computational fluid dynamics. Some of the sponsors of his research program include General Motor Company, Boeing Company, ARL, and Intel. Dr. Zhou is a member of the American Society of Mechanical Engineers ASME , the Laser Institute of America LIA , and the American Welding Society AWS .

Teaching

Courses for Spring 2012

Fluid Flow
Energy Systems
Heat Transfer

Other Courses Taught

Engineering Thermodynamics I
Fluid/Heat Transfer Lab
Fluid Flow
Energy Systems
Heat Transfer

Teaching Specialties

Thermodynamics
Heat Transfer
Fluid Mechanics
Energy Systems
Numerical Methods

Research

Research Interests

CFD
Multi-scale Modeling of Energy Transport in Laser Materials Processing
Laser-Based Welding
Numerical Methods
Energy Systems
Biological Fluid Mechanics and Heat Transfer

Publications

Articles published in refereed journals

Zhou, J., Khalilollahi, A., and Tsai, H. L., “Thermal-Mechanical Modeling of Pulsed Laser Keyhole Welding of 304 Stainless Steels,” Journal of Engineering and Technology, vol. 1, no. 3, pp. 134-140, 2012.

Hamdorf, A., Olson, M., Lin, C.H., Jiang, L., Zhou, J., Xiao, H., and Tsai, H.L., “Femtosecond and Nanosecond Laser Fabricated Substrate for Surface-enhanced Raman Scattering,” Optics Letters, vol. 36, no. 17, pp. 3353-3355, 2011.

Lin, C.H., Jiang, L., Zhou, J., Xiao, H., Chen, S.J., and Tsai, H.L., “Laser-treated Substrate with Nanoparticles for Surface-enhanced Raman Scattering,” Optics Letters, vol. 35, pp. 941-943, 2010. [Co-author] (This paper was also selected for the May 2010 issue of Virtual Journal of Ultrafast Science and the June 2010 issue Virtual Journal for Biomedical Optics (VJBO), cited below.)

Lin, C.H., Jiang, L., Zhou, J., Xiao, H., Chen, S.J., and Tsai, H.L., “Laser-treated Substrate with Nanoparticles for Surface-enhanced Raman Scattering,” Virtual Journal for Biomedical Optics (VJBO), vol. 5, iss. 8, 3 pp., June 2010.

Lin, C.H., Jiang, L., Zhou, J., Xiao, H., Chen, S.J., and Tsai, H.L., “Laser-treated Substrate with Nanoparticles for Surface-enhanced Raman Scattering,” Virtual Journal of Ultrafast Science, vol. 9, iss. 5, 3 pp., May 2010.

Rao, Z.H, Zhou, J., Liao, S.M., and Tsai, H.L., “Three–dimensional Modeling of Transport Phenomena and Their Effect on the Formation of Ripples in Gas Metal Arc Welding,” Journal of Applied Physics, vol. 107, 054905, 2010.

Zhou, J., and Tsai, H. L., “Investigation of Mixing and Diffusion Processes in Hybrid Spot Laser – MIG Keyhole Welding,” Journal of Physics D: Applied Physics, vol. 42, 15 pp., 2009.

Zhou, J., and Tsai, H.L., “Modelling of Transport Phenomena in Hybrid Laser-MIG Keyhole Welding,” International Journal of Heat and Mass Transfer, vol. 51, pp. 4353-4366, 2008.

Zhou, J., and Tsai, H. L., “Porosity Formation and Prevention in Pulsed Laser Welding,” ASME Journal of Heat Transfer, vol. 129, no. 8, pp. 1014-1024, 2007.

Zhou, J., and Tsai, H. L., “Effects of Electromagnetic Force on Melt Flow and Porosity Prevention in Pulsed Laser Keyhole Welding,” International Journal of Heat and Mass Transfer, vol. 50, pp. 2217-2235, 2007.

Zhou, J., Tsai, H. L., and Lehnhoff, T. F., “Investigation of Transport Phenomena and Defect Formation in Pulsed Laser Keyhole Welding of Zinc-Coated Steels,” Journal of Physics D: Applied Physics, vol. 39, pp. 5338-5355, 2006.

Zhou, J., Tsai, H. L., and Wang, P.C., “Transport Phenomena and Keyhole Dynamics During Pulsed Laser Welding,” ASME Journal of Heat Transfer, vol. 128, vol. 7, pp. 680-690, 2006.

Articles published in refereed proceedings

Zhou, J., Khalilollahi, A., and Tsai, H. L., “Modeling of Transport Phenomena and Thermal Stress in Spot Laser Keyhole Welding,” Proceedings, North American Manufacturing Research Institution (NAMRI)/Society of Manufacturing Engineers (SME), Corvallis, OR, vol. 39, 7 pp., 2011.

Zhou, J., and Khalilollahi, A., “Thermal Stress Analysis of 304 Stainless Steel Joints by Spot Laser Keyhole Laser Welding,” Proceedings, 23rd Canadian Congress of Applied Mechanics, Vancouver, BC, Canada, 4 pp., June 5-9, 2011.

Pitschman, M., Delocki, J., Zhou, J., Johns, G., and Roth, J., “Application of Electric Current in Friction Stir Welding,” Proceedings, 2010 ASME International Manufacturing Science and Engineering, Erie, PA, MSEC2010-34166, 6 pp., October 12-15, 2010.

Zhou, J., and Tsai, H. L., “Investigation of Fluid Flow and Heat Transfer in 3-D Dual Beam Laser Welding,” Proceedings, 2010 ASME International Manufacturing Science and Engineering, Erie, PA, MSEC2010-34252, 8 pp., October 12-15, 2010.

Zhou, J., and Tsai, H. L., “Application of Electromagnetic Forces in Laser Welding,” Proceedings, 2007 ASME International Mechanical Engineering Congress and Exposition, Seattle, WA, IMECE2007-43479, 6 pp., November 11-15, 2007.

Zhou, J., Davoud, M.S., and Tsai, H. L., “Investigation of Transport Phenomena in Three-Dimensional Gas Metal Arc Welding of Thick Metals,” Proceedings HT2007, ASME-JSME Thermal Engineering Summer Heat Transfer Conference, Vancouver, BC, Canada, HT2007-1686, 8 pp., July 8-13, 2007.

Zhou, J., and Tsai, H. L., “Mathematical Modeling of Laser Welding and Hybrid Laser-MIG Welding,” Proceedings, 5th International Scientific and Technological Conference in Beam Technology and Laser Applications, St. Petersburg, Russia, 9 pp., September 23-28, 2006.

Zhou, J., Tsai, H. L., and Wang, P. C., “Improvement of Weld Quality Via the Application of Electromagnetic Force in Laser Welding,” Proceedings, 4th International Congress on Laser Advanced Materials Processing, Kyoto, Japan, May 16-19, 2006.

Zhou, J., Tsai, H. L., and Wang, P. C., “Transport Phenomena and the Associated Humping Formation in Laser Welding,” Proceedings IMECE’05, ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, IMECE2005-81766, 9 pp., November 5-11, 2005.

Zhou, J., Tsai, H. L., and Wang, P. C., “Modeling the Transport Phenomena in Moving 3-D Dual-Beam Laser Keyhole Welding,” Proceedings HT2005, ASME Summer Heat Transfer Conference, San Francisco, CA, HT2005-72201, 8 pp., July 17-22, 2005.

Zhou, J., Tsai, H. L., Wang, P. C., and Menassa, R. J., “Transport Phenomena and Defect Formation in Laser Welding of Zinc-Coated Steels,” Proceedings IMECE04, ASME International Mechanical Engineering Congress, Anaheim, CA, IMECE2004-59286, 9 pp., November 13-19, 2004.

Zhou, J., Tsai, H. L., Wang, P. C., and Menassa, R. J., “Melt Flow and Porosity Formation in Pulsed Laser Keyhole Welding,” Proceedings HT-FED04, 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, Charlotte, NC, HT-FED2004-56732, 9 pp., July 11-15, 2004.

Zhou, J., Zhang, W. H., Tsai, H. L., Marin, S. P., Wang, P. C., and Menassa, R., “Modeling the Transport Phenomena During Hybrid Laser-MIG Welding Process,” Proceedings IMECE’03, ASME International Mechanical Engineering Congress & Exposition, Washington, DC, IMECE2003-41763, 8 pp., November 16-21, 2003.

Zhou, J., Zhang, W. H., Tsai, H. L., Marin, S. P., and Wang, P. C., “Modeling of Hybrid Laser-MIG Welding Process,” Proceedings, Laser Technologies in Welding and Materials Processing, Crimea, Ukraine, May 19-23, 2003.

Zhang, W. H., Zhou, J., and Tsai, H. L., “Numerical Simulations of Pulsed Laser Welding Processes,” Proceedings, Society of Photographic Instrumentation Engineers (SPIE), vol. 4831, pp. 180-185, 2003. [Co-author, presented at conference]

Articles published in non-refereed proceedings

Zhou, J., and Tsai, H. L., (keynote paper) “Computer Simulation of Laser Welding and Hybrid Laser-MIG Welding,” Proceedings, International Symposium on Computer-Aided Welding Engineering, Jinan, China, 10 pp., October 19-22, 2006.

Zhou, J., Tsai, H. L., and Wang, P.C., “Investigations of Mixing Phenomena in Hybrid Laser-MIG Welding,” Proceedings, 23rd International Congress on Applications of Lasers and Electro-Optics 2004, San Francisco, CA, #806, 9 pp., October 4-7, 2004.

Zhou, J., Tsai, H. L., and Wang, P.C., “Effects of Electromagnetic Force on Melt Flow and Weld Shape in Laser Keyhole Welding,” Proceedings, 23rd International Congress on Applications of Lasers and Electro-Optics 2004, San Francisco, CA, #807, 20 pp., October 4-7, 2004.

Zhou, J., Tsai, H. L., Wang, P. C., Menassa, R. J., and Marin, S. P., “Modeling of Hybrid Laser-MIG Keyhole Welding Process (1001),” Proceedings, 22nd International Congress on Applications of Lasers and Electro-Optics 2003, Jacksonville, FL, 7 pp., October 13-16, 2003.

Parts of books

Zhou, J., Tsai, H. L., and Wang, P. C., “Hybrid Laser-Arc Welding in Aerospace Engineering,” Chapter 4 in Welding and Joining of Aerospace Materials, Cambridge, UK: Woodhead Publishing, Ltd, ISBN: 978 1 84569 532 3, 2011.

Zhou, J., and Tsai, H. L., Chapter 2: Welding Heat Transfer, Process and Mechanisms of Welding Residual Stress and Distortion, ISBN: 1 85573 771 X, Woodhead Publishing Ltd, Cambridge, UK, October 2005, pp. 32-98.

Service

Organizing conferences, service on conference committees

American Society for Mechanical Engineering

Symposium co-organizer, 2010 International Manufacturing Science and Engineering Conference (MSEC), 2009-2010.
Symposium co-organizer, 2009 International Manufacturing Science and Engineering Conference, 2009.

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