Identification of residual stress length scales in welds for fracture assessment

Bouchard, P. J. and Withers, P. J. (2006). Identification of residual stress length scales in welds for fracture assessment. In: Youtsos, A. G. ed. Residual stress and its effects on fatigue and fracture: Proceedings of a Special Symposium held within the 16th European Conference on Fracture - ECF16, Alexandroupolis, Greece, Part 4. Springer Netherlands, pp. 163–176.

URL: http://www.springer.com/materials/structural+%26+b...

Abstract

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

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