한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제18권2호
  • /
  • Pages.146-151
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  • 2001
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

초기 혼합모드 동적 하중을 받는 경사계면균열의 동적 전파거동

Dynamic Slant Interface Crack Propagation Behavior under Initial Impact Loading

  • 이억섭 (인하대학교 기계·항공·자동화 공학부) ;
  • 박재철 (인하대학교 대학원) ;
  • 윤해룡 (인하대학교 대학원)
  • 발행 : 2001.02.01
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초록

The effects of slant interface in the hybrid specimen on the dynamic crack propagation behavior have been investigated using dynamic photoelasticity. The dynamic photoelasticity with the aid of Cranz-Shardin type high speed camera system is utilized to record the dynamic stress field around the dynamically propagating inclined interface crack tip in the three point bending specimens. The dynamic load is applied by a hammer dropped from 0.08m high without initial velocity. The dynamic crack propagation velocities and dynamic stresses field around the interface crack tips are investigated. Theoretical dynamic isochromatic fringe loops are compared with the experimental reults. It is interesting to note that the crack propagating velocity becomes comparable to the Rayleigh wave speed of the soft material of a specimen when slant angle decreases.

키워드

참고문헌

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