The intent of this project is to evaluate the ability of nonlinear resonance measurements to gauge the level of residual stress in engineered materials. The focus is first to develop models and measurement approaches that demonstrate this ability first in wrought materials, then extend evaluations to additive manufactured AM components. Residual stresses produced in raw materials and parts during the fabrication process affect the dimensional stability and mechanical performance of the final part in service. The ability to gauge the magnitude and orientation of residual stress in materials and parts, particularly AM parts, during the build process should allow process control inputs that create the desired conditions of the final part.
