Prof. Dr. Ing. Jörg Wallaschek is Full Professor and Director of the Institute of Dynamics and Vibration Research at Leibniz Universität Hannover, Germany. He completed his PhD and Habilitation at Technische Hochschule, Darmstadt. After working for Daimler Benz AG Research Center AEG in Frankfurt, he was appointed Professor of Mechatronics and Dynamics at the Heinz Nixdorf Institute at Universität, Paderborn, where he was also Vice President of Research. In 2007, he moved to Hannover, where he was Dean of the Faculty for Mechanical Engineering from 2015 until 2020. His research focusses on Piezoelectric Ultrasonic Systems, Contact Mechanics and Friction, Dynamics of Rotating Machinery, and Nonlinear Dynamics in general.