Effects of vibration energy input on stress concentration in weld and heat-affected zone

Abstract

The current paper describes nondestructive method for measuring residual stress in welded panels after vibratory stress relief, using magnetic field gauges. Since this method is carried out rather simply, it has a wide range of possible applications. For this reason, a more thorough analysis of the method is performed. The potential limits of its application are investigated, together with the parameters that can influence the obtained results. The metal magnetic memory method is verified by determining residual stress concentration in welded panels. The results show it is possible to estimate the residual stress field in a welded structure rapidly, by using reasonably priced equipment.