Journal of Ocean Engineering and Technology (한국해양공학회지)
- Volume 2 Issue 2
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- Pages.96-103
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- 1988
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- 1225-0767(pISSN)
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- 2287-6715(eISSN)
A Photoelastic Study on the Stress Intensity Factor of Circular Disk with an Are-crack
광탄성법에 의한 원고형상크랙을 갖는 원판의 응력확대계수에 관한 연구
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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