Dr. Wu’s areas of specialization include mechanical system design; experimental, analytical, and numerical stress analysis; mechanical testing; instrumentation and data acquisition; fracture mechanics and mathematical modeling of fatigue processes; macroscopic and microscopic failure analyses; and mechanical metallurgy, microstructure, and compositional analyses. He has extensive experience with the finite element analysis method, including static stress analysis, thermal stress, creep and fatigue analysis, modal analysis, and transient dynamic analysis with both linear and nonlinear material behavior as well as geometric nonlinearities. Dr. Wu also has expertise in the mechanical testing, characterizing, and modeling composite materials.
Dr. Wu has worked with the largest computer and consumer electronic device companies, conducting design review and optimization; design analysis and modeling/simulation; product risk and reliability assessment; material selection and processing evaluation. He routinely assembles and leads multidisciplinary teams to address complicated issues and failures in design, human factor, manufacturing, and materials including metal, polymer, glass, adhesives, material fatigue, creep, chemical compatibility, and corrosion. Dr Wu has conducted hundreds of design analyses and model simulations of various consumer electronic products using finite element analysis method, including laptop and desktop computers, tablets, smartphones, to quantify the mechanical response and interaction of the components inside the devices for design optimization and determination of the failure root causes. Dr. Wu often works with companies addressing the technical aspects of consumer product recalls.
Dr. Wu has conducted extensive investigations on the causes of failures initiated by rechargeable batteries in consumer products such as laptops, tablets, cell phones, MP3 players, and toys. In addition, he has worked with various consumer electronics companies and battery manufacturers to provide design and process review, characterization, and testing of the Li-ion batteries for safety and reliability.
Dr. Wu has many years of experience in design analysis and simulation, material characterization, testing and failure investigations of implatable biomedical devices. He has worked with many medical device companies in helping them understand the structural behavior of device and determine options for design optimization, as well as providing consultation on the issues related to the regulatory requirements.
Prior to joining Exponent, Dr. Wu was an adjunct professor and an R&D Engineer at Tennessee Technological University.
CREDENTIALS & PROFESSIONAL HONORS
- Ph.D., Mechanical Engineering, Tennessee Tech University, 1994
- M.S., Mechanical Engineering, Tennessee Tech University, 1989
- B.S., Mechanical Engineering, Nanjing University, China, 1984
Phi Kappa Phi
Tau Beta Pi
Pi Tau Sigma
Wu M, Briant P. Degradation of implant materials. Chapter 16. In: The Use of Finite Element Analysis in Design, Life Prediction, and Failure Analysis of Biomaterials and Medical Devices. ISBN 978-1-4614-3941-7, Springer Science+Business Media, New York, 2012.
Horn Q, Hayes T, Slee D, White K, Harmon J, Godithi R, Wu M, Megerle M, Singh S, Mikolajczak C. Methodologies for Battery Failure Analysis. Linden’s Handbook of Batteries, 4th Edition. Reddy T (ed), McGraw Hill, 2011.
Hayes T, Mikolajczak C, Megerle M, Wu M, Gupta S, Halleck P. Use of CT scanning for defect detection in lithium-ion batteries. Battery Power, March/April 2011, V15-2:14–17.
Mikolajczak C, Harmon J, Gopalakrishnan P, Godithi R, Hayes T, Wu M. From lithium plating to cell thermal runaway: A combustion perspective. Proceedings, 27th International Battery Seminar & Exhibit for Primary & Secondary Batteries, Small Fuel Cells, and Other Technologies, Fort Lauderdale, FL, March 15–18, 2010.
Mikolajczak C, Harmon J, White K, Horn Q, Wu M, Shah K. Detecting lithium-ion cell internal fault development in real time. Power Electronics Technology; March 2010.
Hayes T, Mikolajczak C, Megerle M, Wu M, Gupta S, Halleck P. Use of CT scanning for defect detection in lithium-ion batteries. Proceedings, 26th International Battery Seminar & Exhibit for Primary & Secondary Batteries, Small Fuel Cells, and Other Technologies, Fort Lauderdale, FL, March 16–19, 2009.
Mikolajczak C, Harmon J, Hayes T, Megerle M, White K, Horn Q, Wu M. Li-ion battery cell failure analysis: The significance of surviving features on copper current collectors in cells that have experienced thermal runaway. Proceedings, 25th International Battery Seminar & Exhibit for Primary & Secondary Batteries, Small Fuel Cells, and Other Technologies, Fort Lauderdale, FL, March 17–20, 2008.
Mikolajczak C, Hayes T, Megerle M, Wu M. A Scientific Methodology for Investigation of a Lithium Ion Battery Failure. IEEE Portable 2007 International Conference on Portable Information Devices, IEEE No. 1-4244-1039-8/07, Orlando, FL, March 2007.
Mergele MV, Hayes TA, Horn W. Methodologies of identifying root causes of failures in lithium ion battery packs. Proceedings, 24th International Battery Seminar & Exhibit for Primary & Secondary Batteries, Small Fuel Cells, and Other Technologies, Ft. Lauderdale, FL, March 19, 2007.
Huet R, Wu M. LCD display strength: Why edge preparation matters. IEEE Portable International Conference on Portable Information Devices, IEEE No. 1-4244-1039-8/07, Orlando, FL, March 2007.
Foulds JR, Wu M, Jewett CW, Srivastav S. Fracture and tensile properties of ASTM Cross-Comparison Exercise A 533B Steel by small punch testing. ASTM Special Technical Publication 1329: Small Specimen Test Techniques, Corwin et al. (eds), ASTM, Philadelphia, PA, 1998.
Wu M, Wilson DA. Residual strength prediction of center notched unstiffened fiber/metal laminate panels through the R-curve approach. ASTM Special Technical Publication (STP 1285), American Society for Testing and Materials, 1995.
Wu M, Reddy SV, Wilson DA. Design and testing of Z-shaped stringer stiffened panels—Evaluation of ARALL, GLARE, and 2090 Materials. ASTM Special Technical Publication (STP 1285), 6th Symposium on Composites: Fatigue and Fracture, Denver, CO, May 1995.
Wu M, Stone D, Wilson DA. Formability of Beta 21S titanium. MCTR-0695-03, Manufacturing Center, Tennessee Technological University, June 1995.
Selected Presentations and Published Abstracts
Wu M, Reddy SV, Wilson DA. Fatigue and residual strength investigation of ARALL-3 and GLARE-2 panels with bonded stringers. NASA Conference Publication 3274, NASA/FAA International Symposium on Advanced Structural Integrity Methods for Airframe Durability and Damage, Hampton, VA, May 1994.
Wu M, Holland BW, Wilson DA. Translaminar fracture of advanced composite. American Society for Testing and Materials, Composites D-30 Committee, February 1993.
Wu M, McGoran B, Foulds J. Structural integrity evaluation of the United Kingdom infrared telescope mirror and encoder lifting devices. Report SF26618/COFO/9903/UKIRT, Exponent Failure Analysis Associates, Inc., March 1999.
Foulds JR, Wu M, Jewett CW. Evaluation of the small punch test for nuclear reactor vessel steel embrittlement. Electric Power Research Institute, Report TR-111116, Exponent Failure Analysis Associates, Inc., October 1998.
Wu M, James B, Sprague J. Failure investigation of ovonic stepped roller shaft. DT51801.000/00B/9806/RMW3, Exponent Failure Analysis Associates, Inc., June 1998.
Caligiuri RD, Parnell TK, Eiselstein LE, Huet R, Wu M. Analysis of drill pipe joint failures and recommendations for service. Prepared for Sedco Forex & Grant Prideco, Inc., FaAA-SF-R-96-07-50, Exponent Failure Analysis Associates, Inc., November 1997.
American Society of Mechanical Engineers (member)
American Society for Testing and Materials (member)