Abstract:
It has been known that acoustic emission is generated from domain reversal of ferroelectric materials. In this study, the effect of the degree of domain reversal on acoustic emission was investigated using 0.01 mol% MnO2 -doped (Pb 0.85 La 0.15)Ti3 ferroelectric ceramics of various domain size. Domain size was changed by the control of grain size. Domain reversal and acoustic emission during poling process were measured and the characteristics of acoustic emission were analysed. Domain reversal was quantitatively evaluated by the amount of 90° domain reversal calculated from the change of (002) and (200) X-ray diffraction intensities during poling. It was found that peak amplitude distribution of acoustic emission was associated with the degree of domain reversal.
(Ref. SXVIIIP-005-97)
Source: NDE of Ceramics '97 May 4-7, Symposium on Nondestructive Evaluation of Ceramics
at the American Ceramic Society 99th Annual Meeting, Cincinnati, Ohio.
Buying the Symposium Proceedings from the American Ceramic Society.
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