Momentum - The Magazine for Virginia Tech Mechanical Engineering Vol. 3 No. 4 Winter 2018 | Seite 8

G.J.Nie, Z. Zhong, R.C. Batra, Material tai- loring for reducing stress concentration factor at a circular hole in a functionally graded material panel, Composite Structures. G. Gopinath, R.C. Batra, A common frame- work for three micromechanics approaches to analyze elasto-plastic deformations of fiber-reinforced composites, International Journal of Mechanical Sciences. R.C. Batra, G.J. Nie, Torsional deformations and material tailoring of orthotropic bi-direc- tional FGM hollow truncated conical cylin- ders with curved lateral surfaces, International Journal of Engineering Science. Y.Q. Zhao, Y. Zhou, Z.M. Huang, R.C. Batra, Experimental and micromechanical investigation of T300/7901 Unidirectional Composite Strength, Polymer Composites. Ben-Tzvi presentations Associate Professor Pinhas Ben-Tzvi recently served as Symposium Co-Chair for the Mobile Robotics Symposium as part of the 42nd Mechanisms and Robotics Conference at the 2018 ASME International Design Engineering Technical Conferences in Quebec City. He was also a technical session chair and a technical ses- sion co-chair, and served as a judge for the Mechanisms and Robotics Student Design Competition. Ben-Tzvi and his graduate students pub- lished and presented four peer-reviewed conference papers at IDETC/CIE: • Refour, E., Sebastian, B., Ben-Tzvi, P., “Design and implementation of an exoskele- ton glove for infant medical rehabilitation” • Sohal, S.S., Saab, W., Ben-Tzvi, P., “Im- proved alignment estimation for autonomous docking of mobile robots” • Liu, Y., Ben-Tzvi, P., “Dynamic modeling of a quadruped with a robotic tail using virtual work principle” • Sebastian, B., Williams, A., Ben-Tzvi, P., “Gaussian kernel controller for path tracking in mobile robots” Ben-Tzvi DREAMS lab gets new 3D printer The Design, Research, and Education for Additive Man- ufacturing Systems, or DREAMS, Lab took delivery of a Innovent+ 3D printer by Exone. The latest model printer is capable of processing very fine powders of around five microns, with small binder drops of 10 picoliters. The system can process metals, ceramics, and pharmaceuticals and print parts with complex geometries at high resolu- tion. The research team will use the new equipment to explore new materials such as metal and ceramic powders and nanoparticle inks, and conduct research into how droplet and powder size effect the quality of product microstructure, and overall product quality. MOMENTUM FALL 2018 PAGE 8