%0 Journal Article
%T Fatigue Life Investigation of PZT Ceramics by MSP Method
%A DENG Qi-Huang
%A WANG Lian-Jun
%A XU Hong-Jie
%A WANG Hong-Zhi
%A JIANG Wan
%J 无机材料学报
%D 2012
%I Science Press
%R 10.3724/sp.j.1077.2012.11803
%X The cycle fatigue of PZT ceramic under different stress was investigated by modified small punch (MSP) tests. The research results show that residual strength and piezoelectric constant decrease with increasing cycle stress, which is attributed to crack propagation during cyclic stress process. The value of fatigue crack propagation (n) is calculated to be 395 according to the relationship between maximum stress and fatigue life. The fatigue life under series cycle maximum stress can be induce by fatigue crack propagation. Below the maximum strength of 79.1 MPa, the PZT ceramics can be used over 5 years.
%K <p>PZT ceramic
%K modified small punch test
%K cycle fatigue
%K acoustic emission</p>
%U http://www.jim.org.cn/fileup/PDF/20121007.pdf