Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Sensitivity Characteristics of Acoustic Emission(AE) Sensor using the Lead-free (Na1,K)NbO3 Ceramics

무연 (Na1,K)NbO3 계 세라믹스를 이용한 AE센서의 감도특성

  • 류주현 (세명대학교 전기공학과) ;
  • 이갑수 (세명대학교 전기공학과) ;
  • 홍재일 (동서울대 전기정보제어과)
  • Published : 2007.03.01
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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.

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References

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