THEORETICAL AND EXPERIMENTAL CONTRIBUTIONS REGARDING MATERIALS USED IN PRODUCTION OF ACTIVE ELEMENTS OF ULTRASONICS MOTORS-PROPERTIES, SINGULARITY PIEZOCERAMIC MATERIALS PIC 151, 155, 255

摘要

In this article we present main characteristics of materials used at the construction of ultrasonic motors. Also, there is presented the mode of determination of material's properties of active elements used in ultrasonic motors.