Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
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Ultrasonic Reflection at a Water/Fiber Reinforced Polymer Composite/Water Interface

물/섬유강화 고분자 복합재료/물 경계면에서의 초음파 반사

  • Lee, J.H. (National Industrial Technology Institute) ;
  • Lee, S.C. (National Industrial Technology Institute) ;
  • Jun, J.N. (National Industrial Technology Institute) ;
  • Oh, S.J. (National Industrial Technology Institute)
  • 이재학 (국립공업기술원 신뢰성시험과) ;
  • 이수철 (국립공업기술원 신뢰성시험과) ;
  • 전정남 (국립공업기술원 신뢰성시험과) ;
  • 오세종 (국립공업기술원 신뢰성시험과)
  • Published : 1993.05.31
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Abstract

This study describes ultrasonic reflection at a water/fiber reinforced polymer composite/water interface. Theoretical predictions of reflected beam amplitudes are also presented. Four different polymer composite laminates are investigated : T300/5208 graphite/epoxy $[0]_{31T},\;[45/90/-45/0]_{3S},\;[45/-45]_{2S}$, and S-2 glass/epoxy $[0/90]_{4S}$. The analytical leaky plate wave dispersion curves for the unidirectional laminate and other three laminates can be obtained by searching for the minimum magnitude of the reflection coefficient.

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