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New Engineering Approach for Estimating Crack Opening Displacement of Complex Cracked Pipes
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 Title & Authors
New Engineering Approach for Estimating Crack Opening Displacement of Complex Cracked Pipes
Kim, Yeong-Jin; Heo, Nam-Su; Kim, Yun-Jae;
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 Abstract
An engineering estimation equation for the crack opening displacement(COD) is proposed for a complex cracked pipe, based on the reference stress approach. To define the reference stress, a simple plastic limit load analysis for the complex cracked pipe subjected to combined bending and tension is performed considering the crack closure effect in the compressive-stressed region. Comparison with ten published test data and the results from existing method shows that the present method not only reduces non-conservatism associated with the existing method, but also provides consistent and overall satisfactory results.
 Keywords
Crack Opening Displacement;Complex Cracked Pipe;Leak-Before-Break;Enhanced Reference Stress Method;
 Language
Korean
 Cited by
1.
원주방향 관통균열이 존재하는 배관의 새로운 J-적분 및 COD 계산식-인장하중과 굽힘모멘트가 동시에 작용하는 경우,허남수;김윤재;김영진;

한국정밀공학회지, 2001. vol.18. 7, pp.85-90
2.
참조응력 개념을 이용한 원주방향 관통균열 배관의 파괴 역학 해석 - 실배관 실험 데이터와의 비교 -,허남수;심도준;김윤재;김영진;

대한기계학회논문집A, 2003. vol.27. 4, pp.638-646 crossref(new window)
3.
비대칭 원주방향 관통균열 배관의 탄소성 J-적분 계산식,심도준;허남수;김윤재;김영진;

대한기계학회논문집A, 2003. vol.27. 7, pp.1170-1178 crossref(new window)
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International Journal of Pressure Vessels and Piping, 1998. vol.75. pp.357-373

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Rahman, S., Brust, F.W., Ghadiali, N. and Wilkowski, G., 1998, 'Crack-Opening-Area Analyses for Circumferential Through-Wall Cracks in Pipes-PartⅡ:Models Validations,' International Journal of Pressure Vessels and Piping, Vol. 75, pp. 375-396 crossref(new window)

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