The Effect of Residual Stress on Aluminum Strength Using Thermoelastic Stress Analysis

Residual stress existing in a material can possibly yield the undesired deflection or fracture occurred in an engineering structure. Hence, it would be very helpful for the industry to monitor residual stress and further analyze the influence of residual stress on the strength of a material. Thermoelastic stress analysis is an experimental technique which is able to determine the full-field residual stress by recording temperature changes due to loading. This work analyzes the residual stress distributed over the perforated aluminum plate based on using thermoelastically measured results and further investigate the effect of residual stresses on the material strength.