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J. Ocean Eng. Technol. 1988;2(2):96-103.    

A Photoelastic Study on the Stress Intensity Factor of Circular Disk with an Are-crack
Lee Chi-Woo,Kim Tae-Gyu,Yang Jang-Hong,O Se-Uk
광탄성법에 의한 원고형상크랙을 갖는 원판의 응력확대계수에 관한 연구
이치우,김태규,양장홍,오세욱
경남대학교 공과대학 기계설계학과,경남대학교 공과대학 기계설계학과,경남대학교 기능대학 금형설계학과,동아대학교 공과대학 기계공학과
© 1988 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Stress Intensity Factor, Arc-crack, Photoelastic Experimental Method, Isochromatic Fringe Pattern
핵심용어: 응력확대계수, 원호크랙, 광탄성실험법, 등색선 무늬
Abstract
The stress distribution in the vicinity of the crack tip in the fracture mechanics is ordenarily indicated by the stress intensity factor. In the analysis of stress intensity factors, there are many theoretical and experimental methods. The stress analysis in photoelastic technique is usually made by using the difference of the principal stress of isochromatic fringe patterns. In this paper, the teflon molding technique is adopted to make a test specimen with a circular arc-crack, and that upgraded the accuracy of experiment. As the result, the experimental values of the stress intensity factors for the circular disk with a straight crack are coincided with the theoretical values. But, there is quite a difference between this expermental results on the finite plate for circular arc-crack and its theoretical values on the infinite one. Therefore, a boundary condition with regard to the loading condition on finite disk must be considered.
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