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People of ICL

Professor Tomasz Wierzbicki

Prof Wierz

Professor Tomasz Wierzbicki received his MS degree from the Department of Mechanical Engineering of the Warsaw Technical University. He earned his PhD degree in 1965 from the Institute of Fundamental Technological Research under the supervision of Professor Piotr Perzena of the Polish Academy of Sciences. Soon after that, he went for a one year postdoctoral study at Stanford University and collaborated with Professor E. H. Lee. In 1981, he was promoted to a full professor at the Polish Academy of Sciences and in the same year, he left for the United States, which has become his home. In 1983, he was appointed as a full professor at MIT, where he is currently directing the Impact and Crashworthiness Lab. He is the author of over 150 papers published in major international journals. In 1986, he received the Alexander von Humboldt senior US scientist award. Professor Wierzbicki spent over three years working in the BMW R&D Department in Munich. He directed a number of large industry-orientated programs at MIT with the support of over 50 major automotive, aluminum and shipbuilding companies. Profesor Wierzbicki’s research and consulting interests are in the area of dynamic plasticity, structural failure, crashworthiness, ultralight material, and more recently ductile fracture.

Dr. Elham Sahraei


Dr. Elham Sahraei is a Research Scientist at the Impact and Crashworthiness Lab of MIT. She is the co-director of the Battery Consortium. Her current area of focus is computational modeling of Li-ion batteries in mechanical abuse conditions. She earned her PhD degree in Transportation Safety from the National Crash Analysis Center of The George Washington University. She received her MSc and BSc degrees in Mechanical Engineering from Sharif University of Technology and Isfahan University of Technology, respectively. Her expertise includes full-scale vehicle crash analysis, occupant protection research, and analysis of roadside safety structures. She is the inventor of “Collision Safety Structure”, a structure for controlled buckling of driver seats that reduces perils of frontal crashes. She is the receipient of many prestigious awards such as SAE Myers award, Stapp student award, and WTS scholarship award.

Dr. Marcelo Paredes


Dr. Marcelo Paredes is currently working on offshore applications of MMC methodology to predict ductile crack growth in pipelines and risers subject to different loading conditions. The aim of his research is to find a bridge between this novel approach developed at MIT with the traditional fracture mechanics methodology which is widely accepted by the oil and gas industry. Before coming to MIT, he spent four years in Brazil pursuing his PhD degree at University of Sao Paulo along with Prof. Claudio Ruggieri’s team. His expertise area includes computational and experimental fracture mechanics, mechanical behavior of load-bearing materials and reliability analysis aimed at assessments of structural integrity.

Dr. Mohsen Safaei


Dr. Mohsen Safaei is a Postdoctoral Associate at Impact and Crashworthiness Lab (MIT). Currently, his work at ICL focuses on the modeling of low-cycle fatigue. He obtained his Ph.D. from Laboratory Soete in Ghent University (Belgium) in the field of computational plasticity and constitutive modeling of sheet metals. He extended the existing non-associated flow models for finite element analysis of highly anisotropic sheet metals. In addition, he proposed an evolutionary anisotropic model and a simplified approach for implementation of non-associated flow rule based constitutive equations for finite element analysis. He also implemented a variety of new plasticity models with a great choice of accuracy and simulation speed into the ABAQUS software.

Professor Dirk Mohr

Prof Mohr

Professor Dirk Mohr holds a tenured position as CNRS Research Associate Professor (Chargé de Recherche) at the Laboratoire de Mecaniques des Solides (LMS) and Associate Professor (Professeur Chargé de Cours) at the Department of Mechanics at Ecole Polytechnique. He is also a Research Affiliate at the Department of Mechanical Engineering at MIT. Dr. Mohr studied civil engineering with emphasis on computational and structural mechanics at the University of Karlsruhe in Germany and the Ecole Nationale des Ponts et Chaussées (ENPC) in Paris with a fellowship from the German National Academic Foundation. Dr. Mohr continued his graduate studies at the Massachusetts Institute of Technology (MIT) where he received a Master's and Ph.D. degree in Applied Mechanics in 2000 and 2003. From 2003 to 2006, he split his time as a postdoctoral associate between MIT and Ecole Polytechnique in France. Dr. Mohr has spent a total of about one year at the R&D departments of DaimlerChrysler in Stuttgart and BMW in Munich. He has published more than 30 peer-reviewed journal papers in applied mechanics and has received the Hetenyi 2009 best paper award from the Society of Experimental Mechanics. He is currently Associate Editor of the International Journal of Impact Engineering.


Kirki Kofiani

Kirki Kofiani is a fifth year graduate student at MIT. She is currently working towards her PhD on a new Joint Industrial Project established between MIT and Shell Oil in the area of structural integrity steel pipes for Oil & Gas (O&G) installations. In 2009, she completed her Masters Degree in Ocean Engineering from MIT. Her thesis was entitled “A New Numerical Method for the Problem of Nonlinear Long-Short Wave Interactions”. Kirki received her Bachelors Degree from NTUA in 2006, majoring in Applied Mathematics. Her thesis was titled “Calculus on Functionals and Variational Formulation with Application to Mechanics”. Her current research interests include structural integrity and optimal design of large-scale metal structures at the offshore environment, global seabourne transportation assessment from the investor’s perspective and financial analysis of offshore O&G exploration and production assets.

Matthieu Dunand


Matthieu Dunand is a fourth year doctoral candidate in the Department of Mechanical Engineering. He received his Diplôme d’Ingénieur in 2008 from École Polytechnique, where he studied dynamic testing of materials using Split Hopkinson Bars. He carried out his Diploma Thesis at MIT, focusing on plasticity of AHSS steels and extruded aluminum sheets. Matthieu received his master’s degree in Mechanical Engineering in January 2010, with a thesis focusing on the accuracy evaluation of various fracture experiments. For his PhD, he is investigating the strain rate effect on ductile fracture.

Kai Wang


Kai Wang is a second year PhD student, coming to MIT after graduating with a Master’s degree in Automotive Engineering from Tsinghua University in Beijing. His research in Tsinghua University concentrated on the material testing and characterization. He tested plastic and metal sheets. His Master’s Thesis in Tsinghua was about improving accuracy of force signal acquired in dynamic tests and employing DICM in large deformation measurement.

Stéphane Marcadet


Stéphane Marcadet is a second year PhD student in the Department of Mechanical Engineering. He received his Diplôme d’Ingénieur in 2010 from Ecole Polytechnique after completing his research internship on the fracture of advanced high strength steels at ICL. He then permanently moved to MIT where he he received a Master’s degree in Spring 2012 for his work on the non-linear kinematic hardening of sheet materials. His PhD research focuses on the effect of reverse loading on the ductile fracture of AHSS steels.

CDR Andy Gish


CDR Andy Gish is a fourth year doctoral student and officer in the U.S. Navy. He completed the Naval Engineering and Construction program at MIT in 2004, earning the degrees of Naval Engineer and Master of Science in Ocean Systems Management. He has served eighteen years in the Navy as a submarine officer and engineering duty officer, specializing in submarine maintenance, design, and underwater systems. CDR Gish returned to MIT in 2010 to pursue a PhD. His research is in the area of underwater implosion mechanics and the subsequent effect on adjacent structures.

Keunhwan Pack


Keunhwan Pack is a first year graduate student in the Department of Mechanical Engineering. He did his undergraduate in Mechanical Engineering from Korea Advanced Institute of Science and Technology (KAIST) in South Korea, and received his Master’s degree there in 2012, studying the effect of intermediate strain rates on the fracture loci of DP780 steel sheets using a servo-hydraulic high speed material testing machine. He and his team proposed a new ductile fracture criterion inspired by the microscopic mechanism to predict the fracture forming limit diagrams of sheet metals.

Xiaowei Zhang


Xiaowei Zhang is a first year graduate student in Mechanical Engineering program. He received his master’s degree from Tsinghua University. He research was mainly on vehicle crashworthiness and occupant safety in Tsinghua University. He studied the effect of thermal cycling on durability of adhesively bonded joints. His master thesis was about concept and prototype design of a seat mechanism for reducing whiplash injury in rear impact.

LCDR Joseph Meier


LCDR Joseph Meier, USN is a member of the MIT Impact and Crashworthiness Lab, and a career Naval Officer pursuing Master’s degrees in Mechanical and Naval Engineering. After graduation, he will report for duty to the Supervisor of Shipbuilding, General Dynamics Electric Boat Division, Groton, CT.


Meng Luo


Meng Luo did his undergraduate in Shanghai Jiaotong University, and he came to MIT after graduating from Tsinghua University with a master’s degree in automotive engineering. He studied vehicle crashworthiness and occupant protection with application to the strength and safety of the car seat, which formed the subject of his master’s thesis. Meng’s most recent research has been in both experimental calibration and numerical implementation of ductile fracture for sheet metal forming applications. Meng’s PhD thesis was on the anisotropic plasticity, fracture and crack propagation in metal sheets.

Professor Yuanli Bai

Prof Bai

Professor Yuanli Bai is currently an Assistant Professor in University of Central Florida. He defended his Ph. D. at MIT in February 2008. He came to MIT after graduating with a Masters degree in Vehicle Engineering from Tsinghua University in Beijing. His research at Tsinghua was about vehicle safety, especially with respect to automotive airbag modeling. His research at MIT has concentrated on the development of a novel plasticity and fracture models with extensive experimental validation. After leaving MIT he has maintained a close collaboration with ICL and published a number of important papers.

Dr. Allison Beese

Dr. Beese

Dr. Allison Beese is currently a Postdoctoral Associate at Northwestern University. She graduated from MIT in Spring 2011. Her PhD topic was “Experimental Investigation and Constitutive Modeling of the Large Deformation Behavior of Anisotropic Steel Sheets Undergoing Strain-Induced Phase Transformation”. She received her master’s degree in Mechanical Engineering from MIT in June 2008, with a thesis on the quantification of phase transformation in stainless steel sheets. She graduated with her bachelor’s degree from Pennsylvania State University in May 2005, with a major in Mechanical Engineering and a minor in Engineering Mechanics.

Dr. Jongmin Shim

Dr. Jongmin Shim graduated from MIT in November 2009 with a Ph.D. degree in engineering mechanics. His Ph.D. thesis was entitled “Finite Strain Behavior of Polyurea for a Wide Range of Strain Rates.” During his stay at MIT, he performed several types of dynamic tests on virgin polyurea, proposed a finite rate-sensitive constitutive model, and validated the proposed model with various loading condition tests. As a part of his thesis work, he also visited École Polytechnic in Paris, France, to perform the classical and hydraulic split Hopkinson pressure bar tests. Prior to coming to ICL, he developed a constitutive model of ultra-high performance concrete to capture its thermo-chemo-mechanical coupling effect, and worked on structural dynamics with an application to structural health monitoring.

Dr. Xiaoqing Teng

Dr. Xiaoqing Teng received his Ph.D in December, 2004. His Ph.D. thesis entitled “High Velocity Impact Fracture” focused on analytical and numerical methods for predicting ductile fracture in various problems involved in high velocity impact. Prior to coming to MIT, Dr. Teng received his Masters degree in Naval Architecture from Shanghai Jiao Tong University. He was an instructor at Shanghai Jiao Tong University for three years, teaching structural mechanics and conducting research on strength analysis of complex engineering structures. He is currently working on the development and implementation of computer software to predict fracture of metals and other materials. Recently, he contributed to the area of statistical approach to fracture of cast aluminum alloys. He is an author or co-author of about fifteen original papers published in leading peer-reviewed journals. After defending his Ph.D thesis, Dr. Teng was appointed as a post doc research associate at ICL. Currently, he is working for an oil and gas company in Houston, Texas, still maintaining close contacts with ICL.

Dr. Carey Walters

Dr. Carey Walters has completed his Ph. D. Thesis in August 2009 and he is currently working at TNO in the Netherlands. He came to MIT after four years in the industry. His professional experience includes simulation of the crash of helicopters for Sikorsky Aircraft. Since he has been at MIT, he has represented the ICL as a visiting engineer to Ferrari. His most recent research has been in the development of new techniques for the characterization of plasticity for full-thickness sheet metal as well as static and dynamic fracture characterization of an Advanced High Strength Steel.

LT Evangelos Koutsolelos


LT Evangelos Koutsolelos graduated with a Masters degree from the Naval Engineers and Mechanical Engineering programs. He received a Bachelor of Science degree in Marine Engineering from the Hellenic Naval Academy in 2001. Afterwards he served in the Hellenic Navy in a frigate for one year and later in an auxiliary ship for six months with several duties (Engines Officer, Damage Control Officer and Auxiliary Systems Officer). From 2003 to 2009 he served in submarines. His research at ICL was focused on analysis and simulation of cutting high strength tubes by a shear ram.

LT Christopher MacLean

LT Christopher MacLean graduated with a Masters degree from the Naval Engineers and Mechanical Engineering programs. He graduated from Tulane University in 2007 earning a Bachelor of Science degree in Mechanical Engineering with a minor in Business. After his commissioning he reported to USS Stephen W Groves (FFG 29) in Mayport, Florida. He served as the ships’ Electrical Officer, Main Propulsion Officer and Educational Services Officer. His awards include the Navy and Marine Corps Achievement Medal and Coast Guard Special Operations Service Ribbon. Chris’ research at ICL was focused on characterization of plasticity and fracture properties of DH36 Navy Steel.

LT Rich Hill

LT Rich Hill graduated with a Masters degree from the Naval Engineers and Mechanical Engineering programs. His Thesis title was “Development of Representative Volume Element of Lithium-ion Batteries for Thermo-Mechanical Integrity”. He received a BS from the Department of Mechanical Engineering at the U.S. Naval Academy. Afterwards he served three years on a ballistic missile submarine followed by a two year tour as the division officer of the Officer - Chemistry, Materials, and Radiological Fundamentals course at Naval Nuclear Power Training Command. Rich’s research at ICL was focused on improving the safety of Lithium Ion batteries used by the U.S. Navy.

CDR John Campbell

CDR John Campbell graduated with a Masters degree in the Naval Engineers and Mechanical Engineering programs. He received a BS from the Department of Chemistry at the U.S. Naval Academy. Afterwards he served three years onboard a ballistic missile submarine followed by a two year tour at Strategic Systems Programs where he earned a MS in Engineering Management from Catholic University of America. He completed a second sea tour of two years onboard a fast attack submarine and two years on an aircraft carrier followed by a tour at Portsmouth Naval Shipyard where he was an assistant project superintendent for repair and overhaul of submarines.