A Comparison of the Strains Due to Edge Cracks and Cuts of Finite Width With Applications to Residual Stress Measurement

Abstract

The strains on the surface near a loaded crack or cut are compared for cuts of different width to depth ratios. General solutions are obtained for an arbitrary distribution of normal and shear tractions on the faces of the crack or cut. Numerical results are presented for normal stress distributions which vary with distance from the surface as power functions of zero to third order. The results are useful for measurement of near surface residual stresses and should also be of value for crack compliance measurements of stress intensity factors.