Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (10): 1047-1052.DOI: 10.3724/SP.J.1077.2012.11803

• Research Paper • Previous Articles     Next Articles

Fatigue Life Investigation of PZT Ceramics by MSP Method

DENG Qi-Huang1, WANG Lian-Jun1, XU Hong-Jie2, WANG Hong-Zhi1, JIANG Wan1   

  1. (1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China; 2. Shanghai Career Metallurgy Furnace Materials Co. Ltd., Shanghai 200072, China)
  • Received:2011-12-27 Revised:2012-03-08 Published:2012-10-20 Online:2012-09-17
  • About author:DENG Qi-Huang. E-mail: dengqihuang@mail.dhu.edu.cn
  • Supported by:

    Shanghai Science and Technology Committee, Key Project of Foundation Research (10JC1400500); Shanghai Leading Academic Discipline Project (B603); Aeronautical Science Foundation of China Project (201108M2001)

Abstract: 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.

Key words: PZT ceramic, modified small punch test, cycle fatigue, acoustic emission

CLC Number: