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Fracture Behavior of Cyclically Loaded PZT
Author(s) -
White Grady S.,
Raynes Alan S.,
Vaudin Mark D.,
Freiman Stephen W.
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb04649.x
Subject(s) - materials science , indentation , composite material , fracture (geology) , fracture toughness
The fracture behavior of PZT specimens driven at their resonant frequency by the application of an ac voltage was investigated and compared with fracture behavior of monotonically loaded PZT. Microcracking was observed in the cyclically loaded specimens; above 150°C, the micro‐cracks were dispersed in small clusters, while at T ≤ 86°C, microcracks were generated in a densely populated region near the failure site (indentation). Macrocrack growth also demonstrated a temperature dependence, with crack growth occurring at T > 150°C but not at T ≤ 86°C.