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New Engineering Approach for Estimating Crack Opening Displacement of Complex Cracked Pipes

복합균열이 존재하는 배관의 균열개구변위 계산을 위한 새로운 공학적 계산식

  • Published : 2001.08.01

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

References

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