A Study on the characteristics of the Signals of AE according to Fracture mode of CFRP

Carbon Fiber Reinforced Plastic(CFRP)복합재의 파괴 거동에 따른 Acoustic Emission(AE)신호 특성에 관한 연구

  • 이경원 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 김종현 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 김재성 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 이보영 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2009.12.14
  • Accepted : 2009.12.27
  • Published : 2009.12.31


Recently, the wide range of the composite materials is used for the making airplanes, trains and automobiles body for the lightweight. Despite having complex structures, composite materials usually have well defined mechanical characteristics. However, composite materials are difficult to understand the fracture mechanism clearly by simple mechanical test. Nondestructive evaluation (NDE) combined with mechanical testing can play a more important role and especially Acoustic Emission Testing (AET) would become known to be a useful tool to assess damage and fracture behavior of composites. In this study The experiment was performed to acquire the acoustic emission signal during tensile test using unidirectional CFRP specimen and the data was analyzed the acoustic emission parameters with the waveform.


Supported by : 한국연구재단 국가지정연구실


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