Simultaneous Measurement of Strain and High Frequency Vibration of Composite Main Wing Model

복합재 주 날개 모델의 변형률과 진동의 동시 측정

  • 송지용 (한국과학기술원 항공우주공학 대학원) ;
  • 윤혁진 (한국과학기술원 항공우주공학 대학원) ;
  • 박상욱 (한국과학기술원 항공우주공학 대학원) ;
  • 박상오 (한국과학기술원 항공우주공학 대학원) ;
  • 김천곤 (한국과학기술원 항공우주공학)
  • Published : 2005.11.18

Abstract

For the simultaneous measurement of strain and vibration signal, a fiber Bragg grating sensor system with a dual demodulator was proposed. One demodulator using a tunable Fabry-Perot filter could measure low-frequency signal such as strain and the other demodulator using a coarse wavelength division multiplexer could detect high-frequency signal such as vibration signal using intensity demodulation method. In order to measure strain and vibration of the composite main wing model under static loading a real time monitoring program was developed. Also using intensity demodulation of CWDM, sensitivity and resolution at high frequency vibration were evaluated.

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