His research focuses on understanding how interfaces contribute to failure of complex materials with a specific emphasis on microstructural issues. He has developed three different multiscale modeling methods and a new experimental scheme called nanomechanical Raman spectroscopy. Dr. Tomar has been a recipient of multiple research awards, including the inaugural Material Science and Engineering-C Young Researcher award. He is Editor-in-Chief of the International Journal of Experimental and Computation Biomechanics and is an Associate Editor of the Journal of Engineering Materials and Technology. He is an associate fellow of AIAA.