... nonlinear at stress 470 MPa. Failure occurred at 668 MPa. COD and CSD at the point of nonlinearity were 38.1 μm and 57.6 μm, respectively. At failure, COD and CSD were 101.9 μm and 138.17 μm, respectively. 5 Moire´ fringe pattern corresponding to crack shearing displacement for crack at 60 degree...

... internal stresses fatigue carbon steel melting heat treatment moire fringes light interferometry Spot welding, or resistance spot welding, involves the joining of two or more pieces of sheet metal in localized areas or spots where melting and coalescence of a small volume of material occurs...

... , where the moire´ fringes which represent the released U x displacement field under the equibiaxial residual stress state are modified in different ways by two known carrier fringes of rotation with opposite signs. At two typical regions of Fig. 2 , the original displacement gradient F...