복합재료의 열-음향방출거동

Thermo-Acoustic Emission Behavior of Composites

  • 김영복 (한양대학교 대학원 기계설계학과) ;
  • 우성충 (한양대학교 대학원 기계설계학) ;
  • 최낙삼 (한양대학교 기계 정보경영공학부)
  • 발행 : 2001.10.01

초록

Thermo-acoustic emission (AE) from composite laminates under the repetitive thermal cyclic loads have been quantitatively analyzed in consideration of AE source mechanisms. The repetitive thermal load brought about a large reduction, i.e. an exponential decrease in AE total ringdown counts and AE amplitudes. It was thought that generation of thermo-AE during the first thermal cycle was not caused by crack propagation but by secondary microfracturing due to abrasive contact between crack surfaces.

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