한국신뢰성학회:학술대회논문집 (Proceedings of the Korean Reliability Society Conference)
- 한국신뢰성학회 2002년도 정기학술대회
- /
- Pages.245-251
- /
- 2002
CFRP에 내재된 결함의 비파괴 평가를 위한 Shearography기법 적용
Application of Shearography for Nondestructive Evaluation of Internal Defects in CFRP
초록
Electronic Speckle Pattern Interferometry(ESPI) is one of optical technique to measure displacement precisely, uses CCD camera to show result image in real time. General ESPI system measures in-plane or out-of-plane displacement. Shearography is one of electronic speckle pattern interferometric methods which allow full-field observation of surface displacement derivatives and it is robust in vibration. The shearography provides non-contacting technique of evaluating defects nondestructively In this study, the shearography was used to evaluate defects in Carbon Fiber Reinforced Plastic(CFRP). Various sizes of artificial defects were embedded in various depths of woven CFRP plate. Effects due to the variation of size and depth of defects were evaluated in this study.