Materials at Extremes

All dates for this event occur in the past.

E141 Scott Lab
United States

Seminar Speaker: Calvin Stewart, The Ohio State University 

Abstract:

Materials are being asked to perform at “extremes” where increased inlet pressures and temperatures in aero gas turbines, the rise of hypersonic flight, and new Generation IV fission and ITER Fusion reactor concepts push the limits of what materials are capable of. There is a need to develop advanced manufacturing techniques to fabricate extreme environment materials, components, and geometries not possible with conventional techniques. To meet this challenge, government, academia, and industry has invested heavily in Additive Manufacturing (AM) technologies and Integrated Computational Materials Engineering (ICME) to achieve “designer” components with processing, structure, properties, and performance designed to survive harsh environments. The quest for new materials requires that we quickly manufacture, qualify, and model the performance of the candidate materials for service.

Materials at Extremes (MATX) focuses on the advanced manufacturing, mechanical testing, and theoretical mechanics of materials subject to thermal, mechanical, and chemical extremes. In this seminar, we will review the ongoing and future research in MATX, and conduct a deep dive into accelerated, parallelized, and miniaturized testing methods for new materials qualification and machine learning for new materials discovery and ICME optimization.

Bio:

Calvin M. Stewart is the College of Engineering Innovation Scholar and Associate Professor in the Departments of Mechanical and Aerospace Engineering and Materials Science and Engineering at The Ohio State University. He obtained a BS, MS, and PhD in Mechanical Engineering at the University of Central Florida in 2008, 2009, and 2013 respectively. As an Innovation Scholar his goal is to effect positive change in society by forming strategic partnerships for research innovation, economic development, and technology transfer. Previous leadership roles include Provost Faculty Fellow for Diversity, Equity, and Inclusion, Energy Engineering Lead for the NASA Aerospace Center, and founder of the Black Affinity Group at a previous institution. He has been awarded three (3) summer faculty fellowships with the Air Force Research Laboratory and a visiting scientist role with the National Nuclear Security Administration.

Dr. Stewart directs Materials at Extremes (MATX) which focuses on the advanced manufacturing, mechanical testing, and theoretical mechanics of materials subject to thermal, mechanical, and chemical extremes. Within the gamut of extremes: creep, fatigue, thermomechanical fatigue, and fracture are key focus areas. Dr. Stewart has authored over 80 articles in these areas. Dr. Stewart has generated over $12M in research expenditure. He is an honored ASTM International Emerging Professional. Current research involves additive manufacturing of superalloys and refractory alloys, the development of accelerated, parallelized, and miniaturized testing protocols, and the development of continuum damage mechanics, probabilistic, and machine learning based models to enable fundamental discoveries in materials at extremes.

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