Residual stress measurement methods comparison in high-strength steel for naval application

摘要

Residual stresses can be beneficial or detrimental to mechanical structures. In this work, a rectangular plate specimen with a cold expanded hole was designed to study the influence of these stresses on low cycle fatigue of high-strength steel. Two separated measurements of the stresses were made using different techniques: X-ray diffraction method and contour method. The results show good agreement with finite element modelling of the cold-expanded hole problem.