Acoustic Emission (AE) Measurement Technique in Piezoelectric Ceramics

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Copyright (c) 1996 The Japan Society of Applied Physics
, , Citation Hideaki Aburatani Hideaki Aburatani and Kenji Uchino Kenji Uchino 1996 Jpn. J. Appl. Phys. 35 L516 DOI 10.1143/JJAP.35.L516

1347-4065/35/4B/L516

Abstract

Special care must be taken in measuring the acoustic emission (AE) in piezoelectric ceramics, because a self vibration of the ceramics is caused by a power supply through a feedback system. Significantly different data from the results previously reported were obtained by eliminating the self vibration of the ceramics. The dynamic contribution of 180° and non-180° domain reorientation on the AE generation were discussed on the basis of AE data observed in lead zirconate-titanate (PZT) ceramics.

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10.1143/JJAP.35.L516