Abstract
Residual stresses have long been known to have an important influence on the failure of machine and structural components. This influence is especially notable in the case of the growth of stress corrosion cracks. A linear elastic fracture mechanics treatment of the influence of residual stresses on stress corrosion crack propagation is outlined that is applicable to complex stress fields and crack geometries. Examples of the use of these techniques to the growth of stress corrosion cracks in pipes are presented for various pipe sizes and residual stress distributions. It is demonstrated that residual stresses can be beneficial or harmful, and that means are available for altering the residual stress pattern in pipes in order to take advantage of their beneficial properties. Additionally, results for part-circumferential cracks in a line with axisymmetric as-welded residual stresses show the beneficial nature of such stresses in that particular case, and demonstrates the added feature of distinguishing between leaks and sudden and complete pipe severances. Such a capability is often important in the analysis of piping failures.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call