The Embedding Reliability and The Spectrum Characteristic of Fiber Bragg Grating Sensor Embedded into Composite Laminates

복합재 평판 내부에 삽입된 광섬유 브래그 격자 센서의 삽입안전성과 신호 특성에 관한 연구

  • 이정률 (한국과학기술원 항공우주공학과 대학원) ;
  • 류치영 (한국과학기술원 항공우주공학과 대학원) ;
  • 강현규 (한국과학기술원 항공우주공학과 대학원) ;
  • 김대현 (한국과학기술원 항공우주공학과 대학원) ;
  • 구본용 (도남시스템㈜) ;
  • 강동훈 (한국과학기술원 항공우주공학과 대학원) ;
  • 홍창선 (한국과학기술원 항공우주공학과) ;
  • 김천곤 (한국과학기술원 항공우주공학과)
  • Published : 2000.11.01


FBGs have been extensively used as strain sensors or temperature sensors in a variety of applications related to composites because of embedding ability, small size and multiplexing capability. We inspected embedding environments inside composites with optical fiber by microscope analysis and birefringence characteristics of FBG embedded into textile composite laminate by cure monitoring using a high power WSFL. The cure monitoring of the cases with the striped FBG and the recoated FBG provided comprehensive understandings about the birefringence effect induced by the transverse stress. And these results allowed to consider a recoating method as an important tool to relieve birefringence.