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Prof. Dr. Dirk Mohr
Chair of Computational Modeling of Materials in Manufacturing

 

 

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Research Scientists

Dr. Christian Roth
Dr. Roth joined ETH after a postdoctoral stay at MIT’s Impact and Crashworthiness Lab in 2015. Dr. Roth received his PhD from Ecole Polytechnique in Paris for his thesis work on the effect of strain rate on ductile fracture. He came to Paris after completing his Master’s degree in Aerospace Engineering at the Bundeswehr University Munich and working as an Engineering Officer for the German Air Force. He carried out his Diploma Thesis at MIT, working on porosities in aluminum welds in collaboration with BMW. His current research is concerned with plasticity and ductile fracture under extreme conditions. Mr. Roth also holds an MBA from New Mexico State University in Las Cruces.

Dr. Borja Erice
Dr. Erice moved to Switzerland in 2015 after a two-year postdoctoral stay at Ecole Polytechnique in Paris. Dr. Erice holds a B.Sc. in Aeronautical Engineering as well as a M.Sc. in Materials Engineering from the Technical University of Madrid (UPM). He also received a Ph.D. from UPM in Materials Engineering in December 2012. Dr. Erice has spent short research stays at the Structural Impact Laboratory (SIMLab) at the Norwegian University of Science and Technology (NTNU) and Southwest Research Institute (SwRI). His current research activity covers a wide range of multi-physics disciplines including the experiments and modelling of the plasticity and failure of AHSS under wide range of dynamic loadings and temperatures, the ductile fracture modelling of high-performance metallic alloys subjected to combined mechanical-electro-magnetical forces or compressive behavior of sandwich structures

Dr. Maysam Gorji
Dr. Maysam Gorji received his PhD in Mechanical and Process Engineering from ETH in 2015. His research interests focus on theoretical and experimental aspects of forming technologies in real and virtual environments subject to information and complexity constraints. Virtual modeling, optimization and computational aspects of forming manufacturing operations as well as theoretical fracture prediction are some of his recently activities. Dr. Maysam Gorji collaborated with Novelis Switzerland SA, Daimler AG, DYNAmore Swiss GmbH, AutoForm Engineering GmbH and GOM mbH under the supervision of Prof. Pavel Hora and Prof. Frédéric Barlat regarding the instability and fracture models of recently developed aluminum alloy composites so-called Fusion material. He holds a dual-appointment as a postdoctoral researcher in Impact and Crashworthiness Laboratory at MIT and ETH's Chair of Computational Modeling of Materials in Manufacturing. Current project in collaboration with ExxonMobil's Strategic Research Center is concerned with the analysis of the large deformation response of graded materials at the micron level.

Graduate Students

Rami Abi Akl
Rami Abi Akl received his Diplôme d’Ingénieur in 2013 from Ecole Polytechnique after completing a joint Master’s thesis at Solid Mechanics Laboratory (LMS, Ecole Polytechnique) and Impact and Crashworthiness Laboratory (ICL, MIT). Rami’s thesis consisted in the characterization of shear ductile fracture of Al2024 aluminum alloy, through comparison of five different specimen geometries for determining the strain to fracture under shear loading. The study included as well a comparison of four different loading conditions for combined tension-shear tests for achieving a wide range of stress triaxiality. Rami is a Ph.D. candidate in the Department of Mechanical Engineering at MIT. During his first year as a Graduate Student in MIT, Rami performed the experimental characterization of the ductile fracture response of pre-strained paint baked 6xxx aluminum sheets. During summer 2015, Rami conducted a three-month project with Scuderia Ferrari in Maranello, Italy, on the topic of turbocharger burst containment.

Colin Bonatti
Colin Bonatti is a PhD candidate at MIT’s Department of Mechanical Engineering. He received his Diplôme d’Ingénieur from Ecole Polytechnique, France, in 2013, majoring on Energy Engineering. He carried out his Diploma Thesis at MIT as a visiting student, working on a homogenization method for stacks elasto-plastic thin sheets. His research now focuses on designing an experimental protocol to characterize the mechanical behavior of the metallic current collectors.

Marianna Diamatopoulou
Marianna Diamantopoulou is a PhD candidate in the Department of Mechanical and Process Engineering at ETH. She completed her diploma studies in 2014 in the Department of Chemical Engineering at University of Patras, Greece. After that Marianna joined ETH for the master program in Process Engineering. Her master thesis focused on the optimization of the synthesis of vertically aligned carbon nanotubes (VACNTs) on stainless steel substrates with different compositions and the mechanical characterization of the material by conducting dynamic and quasi-static compression tests. In addition, an experimental setup was developed during the thesis in order to test the adhesion of the VACNTs to the different substrates. From November 2016, Marianna joined our group for her PhD studies which will focus on the synthesis of nano-metamaterials and their behavior under extreme loading conditions. For this purpose, experimental techniques suitable for conducting such tests at the nanoscale are going to be developed.

Keunhwan Pack
Keunhwan Pack is a Ph.D. candidate in the Department of Mechanical Engineering at MIT. He joined the Impact and Crashworthiness Lab (ICL) after receiving his bachelor’s and master’s degrees from KAIST in South Korea. His tasks at ICL include the validation of the MIT plasticity and fracture models on the structural level and the development of a ductile fracture model for shell finite elements. Validation projects are not only for quasi-static monotonic loading but also for moderate-rate dynamic loading and complex loading where strain reversal occurs. Recently, the second Sandia Fracture Challenge and the three-point bending of a martensitic hat section have been extensively studied. The concept of the Domain of Shell-Solid Equivalence (DSSE) is introduced to define the failure of shell finite elements.

Franziska Siebenbrock gen. Hemker
Franziska Siebenbrock gen. Hemker is a master's student in the Department of Mechanical and Process Engineering at ETH. She joined our group after receiving a Bachelor'S degree in Economics from the University of Zürich and in Mechanical Engineering from ETH. Franziska's master's thesis research focusses on the effect of temperature (and strain rate) on the fracture initiation in advanced high strength steels. She has designed a new experimental program for characterizing the plasticity and fracture response of two dual phase steels. The overall goal of her work is to come up with a new computational model for predicting ductile fracture at elevated temepratures.

Thomas Tancogne-Dejean
Thomas Tancogne-Dejean is a first year graduate student at MIT working on additive layer manufacturing. He graduated from Ecole Polytechnique in 2014, where he completed studies focusing on mechanics. After a five month internship at ICL, he returned to France to complete his master’s degree before continuing his PhD research at MIT in fall 2015. In a joint project with the Centre for Advanced Additive Manufacturing (AdAM) at The University of Sheffield, Thomas worked on the plasticity and failure of titanium made through shaped metal deposition. He has developed a probabilistic fracture model (ICL Report #269). He is currently working on the numerical and experimental characterization of lightweight space filling lattices made of 316L stainless steel through Selective Laser Melting.

Maria Jesus Perez Martin
Maria Jesus Perez-Martin is a Ph.D. candidate in the Department of Materials Science at Technical University of Madrid (UPM). She completed her B.Sc. in Mechanical Engineering, with a major in Industrial Chemistry, at University of Valladolid in Spain. After obtaining her bachelor’s degree, she consolidated her interest in mechanics of materials by completing her M.Sc. in Materials Engineering at UPM. In December 2012, she obtained a Predoctoral Research Grant (FPI) from the State Secretariat for R&D&I of the Spanish Ministry of Economy and Competitiveness to carry out her doctoral studies on the dynamic fracture-initiation toughness of armor metallic materials at different loading rates. The design and development of new experimental devices and the FEA of the dynamic fracture processes are two key aspects of her ongoing research. At ETH, she is also working on the energy absorption response of metallic micro-lattice materials.

Undergraduate Students

Thomas Beerli
Thomas Beerli is currently writing his bachelor thesis in our lab. Since 2013 he is enrolled as bachelor student in mechanical engineering at ETH Zürich. Before beginning his studies Thomas focused first on his apprenticeship as a technical draftsman followed by two years working in a textile machine company. His thesis focuses on the influence of the specimen shape on the measured strain to fracture strain in fracture to shear experiments.