Residual Stress Measurement of Thin Specimen

Residual stress measurement of thin specimens has been a challenge for both hole drilling and XRD techniques especially when the location of interest is close to the edge or geometric discontinuities. Not only geometric constraint, but data analysis can also be challenging due to the high stress gradient throughout the thickness. Goal of this presentation is to review the current methods and technical issues to establish best practices and validation methods for more accurate residual stress assessment on the thin specimens.