Dr. Steven M. Arnold is currently the Technical Lead for Multiscale Modeling within the Materials and Structures Division at NASA Glenn Research Center with over 30 years of experience. He also is the Technical Lead for the Materials and Structures Discipline within the Transformative Tools and Technology (TTT) project. His primary emphasis is on the development of advanced high temperature deformation and damage constitutive models and associated multiscale design and analysis computational tools required to make these models accessible to the engineering community. Other areas of interest include micromechanics, information management tools, smart materials, and machine learning.