1 1 Definition of ICME Mark F. Horstemeyer 1,2 and Satyam Sahay 3 1 Department of Mechanical Engineering, Mississippi State University, Mississippi State, MS, USA 2 Center for Advanced Vehicular Systems (CAVS), Starkville, MS, USA 3 John Deere Technology Center India Tower XIV, Cybercity, Magarpatta City, Pune 411 013, India What is ICME? As some confusion exists regarding its definition in the scientific community, deliberating on this topic is worthwhile. In fact, litigating on some of the terms needs attention so that redundancies related to other fields, pedagogical lapses in education, misunderstandings of researchers who are trying to garner funding, and minimal use of integrated computational materials engineering (ICME) in industry can be decreased. First, let us consider what is not ICME. 1.1 What ICME Is NOT 1.1.1 Adding Defects into a Mechanical Theory ICME is not just adding material defects into a mechanical theoretical model. Nabarro (1952) placed the notion of dislocations into mechanics equations just to name a few. Hall (1951) and Petch (1953) added grain size effects to the stress state relationship. Eshelby (1957, 1959) described how to analytically place inclusions into a medium to determine the aggregate response, which was the basis for most, if not all, of the microscale and mesoscale homogenization theories that have been used today for metals, composites, and ceramics. Tis list is not exhaustive by any means but illustrates that adding defects into a continuum theory has been around quite a long time. As such, if ICME is “new,” then adding different scales of defects into a mechanical theory is not ICME. It is necessary for ICME but not sufficient within itself. Integrated Computational Materials Engineering (ICME) for Metals: Concepts and Case Studies, First Edition. Edited by Mark F. Horstemeyer. © 2018 John Wiley & Sons, Inc. Published 2018 by John Wiley & Sons, Inc. COPYRIGHTED MATERIAL