Study for collision fatigue limit of PZT with compression stress

Abstract

The collision fatigue limit was determined for Pb_0.55Zr_0.24Ti_0.21O_x (PZT) piezoelectric ceramics. When the ideal collision energy (E_cⁱ: mJ) is applied below 16mJ, the collision fatigue fracture can not be observed by the collision test. Thus, we defined that the collision fatigue limit is 16mJ of the PZT sample with the static compressive stress generated by rubber cylindrical narrow hole. Namely, the infinite life is promised below the limit.