The proposed experiment is the final experimental step for validating the measurement methods and analytical models developed based on the systematic experimental studies (RB1720433-ENGIN X, Stress-Spec and SALSA) with an aim to improve the reliability of neutron diffraction technique in characterizing residual stress in dissimilar metal welds (DMWs). In this experiment, we plan to measure an industrial DMW sample having a more complex joining interface compared to the previous studies (orthogonal interface), and continue the process of developing the methodology for quantifying and correcting the errors (pseudo-strains) as a result of the gauge volume traversing an internal boundary. A cross-technique validation approach will be adopted using other residual stress characterization technique(s) for complementing the results from the developed methods.