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Erschienen in:
2006 | OriginalPaper | Buchkapitel
Identification of Residual Stress Length Scales in Welds for Fracture Assessment
verfasst von : P. J. Bouchard
Erschienen in: Residual Stress and Its Effects on Fatigue and Fracture
Verlag: Springer Netherlands
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Residual stresses originate from the elastic accommodation of misfits between different regions in a structure. The interaction between the misfit and the restraint of the surrounding structure determines the magnitude of the resultant residual stress and its length-scale. This paper defines the residual stress length-scales that must be considered in engineering fracture mechanics analyses for welded joints by identifying the crack length-scale of concern. This information is used to estimate measurement length-scale requirements to quantify the stress field and the length-scale that must be represented in finite element weld residual stress simulations.