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Weight function and stress intensity factor for a semi-elliptical surface saddle crack in a tubular welded joint

Lookup NU author(s): Dr Enrong Chang

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Abstract

A new set of stress intensity factor (SIF) parametric equation to predict weight function and stress intensity factor for a semi-elliptical surface saddle crack is discussed. With the hot-spot stress, degree-of-bending values and appropriate load-shedding models, it can be used to measure the deepest SIFs for semi-elliptical surface saddle cracks in tubular welded joints. The curvature effect of tubes to the SIFs is identified by comparing the predictions with three-dimensional T-butt weight-function-based SIF solution. A comparison of the predictions with tubular joint fatigue, has shown that this new SIF solution can work well with the non-linear moment release model.

Publication metadata

Author(s): Chang E, Dover WD

Publication type: Article

Publication status: Published

Journal: Journal of Strain Analysis for Engineering Design

Year: 2005

Volume: 40

Issue: 4

Pages: 301-326

Print publication date: 01/05/2005

ISSN (print): 0309-3247

ISSN (electronic): 2041-3130

Publisher: Sage Publications Ltd

URL: https://doi.org/10.1243/030932405X15972

DOI: 10.1243/030932405X15972

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