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http://dx.doi.org/10.4313/JKEM.2007.20.3.218

Sensitivity Characteristics of Acoustic Emission(AE) Sensor using the Lead-free (Na1,K)NbO3 Ceramics  

Yoo, Ju-Hyun (세명대학교 전기공학과)
Lee, Gab-Soo (세명대학교 전기공학과)
Hong, Jae-Il (동서울대 전기정보제어과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.3, 2007 , pp. 218-222 More about this Journal
Abstract
In this study, Acoustic emission(AE) sensors were fabricated using lead-free piezoelectric ceramics for prohibiting environmental pollution. Structure of AE sensors were designed as Langvin type air backing form. Here, the piezoelectic element was used as PZT(EC-65)(AE1) and NKN(AE2), respectively. The measured resonant frequency, the maximum sensitivity frequency and sensitivity of AE sensors were as follows ; 143 kHz, 29.4 kHz and 69.3 dB in AE1 and 179 kHz, 29.4 kHz and 66.3dB in AE2, respectively.
Keywords
Langevin type; Acoustic omission; Sensor; Sensitivity; Lead-free ceramics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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