A Review on Residual Stress in Manufactured Component, Testing Techniques, and Relieving Methods

Residual stress is the stress that stays behind in a body after any external forces or thermal gradients are removed. Due to manufacturing processes residual stresses generated near the surface of the finished component. Properties of the component that are influenced by residual stress consist of fatigue strength, corrosion behavior and distortion of parts. This paper reviews the residual stress profile generated by different manufacturing processes. Measuring residual stress is also very important. Destructive, Non-destructive and semi-destructive methods classified. For the better life of the machined component, it is suggested to stress relief the generated stress. There is mechanical, heat and diffusion treatment available to relieve the stress. Residual stress measuring techniques classified and reviewed. Also, the vibratory stress relief technique briefly reviewed.