Research published in the Journal of Applied Physics

A full-field crystal plasticity study on how texture and grain structure influences hydrostatic stress in thermally strained β-Sn films by Aritra Chakraborty and Philip Eisenlohr   The present study uses full-field thermo-mechanically coupled crystal plasticity to simulate the stress distribution in thermally strained β-Sn films to better understand the conditions causing the generally rare nucleation…

Interactive diffusion tutorial for high school students

As part of the High School Engineering Institute, Dr. Eisenlohr engaged a group of more than 40 students in an interactive tutorial that visualizes how atoms relocate in metals due to vacancy diffusion. After an explanation of some theoretical background and technological relevance, all students could manipulate the settings of a web-based Diffusion Simulator to…

Research published in Scripta Materialia

Exploring the accuracy limits of lattice strain quantification with synthetic diffraction data by Chen Zhang, Thomas Bieler, and Philip Eisenlohr From a collection of scattering vectors obtained by synchrotron X-ray diffraction, the lattice strain can be spatially quantified. This paper explores the inherent accuracy limits by comparing a least-squares regression and an optimization method applied…

Welcoming new post-doc Satyapriya Gupta

After joining Michigan State University in May, Satyapriya Gupta will strengthen the research group and work on identifying the three-dimensional nature of mechanical twinning in polycrystals. Satyapriya got his Ph.D. from Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universität Bochum, Germany, in the field of continuum modeling of TRIP-assisted steels. After that, he spent one…

Invited seminar talk at Purdue University

Dr. Eisenlohr spent Thursday and Friday (March 22 and 23) at Purdue University and spoke in the Materials Engineering Seminar on the topic of DAMASK as a tool to solve coupled problems in crystal plasticity The Düsseldorf Advanced Material Simulation Kit (DAMASK) started out as a modular framework for crystal plasticity more than a decade…

Research published in Metall. Mater. Trans. A

Contraction Twinning Dominated Tensile Deformation and Subsequent Fracture in Extruded Mg-1Mn (Wt Pct) at Ambient Temperature by Ajith Chakkedath, Tias Maiti, Jan Bohlen, Sangbong Yi, Dietmar Letzig, Philip Eisenlohr, and Carl J. Boehlert Due to their excellent strength-to-weight ratio, Mg alloys are attractive for applications where weight savings are critical. However, the limited cold formability…

TMS 2018 Annual Meeting & Exhibition

The 147th Annual Meeting took place at the modern Phoenix Convention Center in sunny and warm Arizona from March 11–15, 2018. From our research group, Eureka Pai Kulyadi, Aritra Chakraborty, and Dr. Eisenlohr attended the conference—accompanyied by a number of other students and advisors from Michigan State University. Eureka presented a poster outlining the direction…

Research published in Scripta Materialia

Fourier-based spectral method solution to finite strain crystal plasticity with free surfaces by Tias Maiti and Philip Eisenlohr A plastically dilatational material model is proposed that enables to simulate the mechanical response of non-compact geometries (containing free surfaces) by means of established spectral methods without any particular adaptations, i.e. in combination with arbitrary constitutive laws…

Congrats to Tias for successfully defending his PhD thesis!!

Tias Maiti successfully defended his thesis on July 27, 2017. He modeled stage II hardening that is frequently observed in single crystal tension experiments using a Crystal Plasticity Fast Fourier Transform framework with physics-based material models. We wish Tias all the best for his upcoming endeavor in Portland, OR! From left to right: Aritra Chakraborty…

Research published in European Journal of Mechanics / A Solids

Evaluation of an inverse methodology for estimating constitutive parameters in face-centered cubic materials from single crystal indentations by Aritra Chakraborty and Philip Eisenlohr The feasibility to determine the adjustable parameters of single crystal plasticity constitutive laws by an inverse approach that minimizes the deviation between the measured and simulated indentation response of individual grains (of…