The effects of residual stress on elastic-plastic fracture propagation and stability

Publication date: 5 April 2018
Source:Materials & Design, Volume 143
Author(s): H.E. Coules, G.C.M. Horne, K. Abburi Venkata, T. Pirling
Residual stresses in materials affect their resistance to the initiation of fracture and to subsequent crack growth. Using full-field strain measurements and finite element analysis we demonstrate that the effect of residual stress on a material's crack growth resistance curve can be understood using elastic-plastic fracture mechanics. It is shown that Lei's modified J-integral formulation (Jmod) is a good predictor of the load vs crack extension behaviour of an elastic-plastic material containing residual stresses.

Graphical abstract

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