International Institute of Welding work on residual stress and its application to industry

This paper gives an overview of the International Institute of Welding (IIW) activity on residual stress and distortion prediction (RSDP) in welded structures. The overall goal of the activity is to define an IIW recommendation for prediction and determination of welding residual stress and distortion. The three main collaborative activities that were launched to support this goal (a modelling round robin, a measurement technique benchmark and definition of a compendium) are described. It is concluded that significant progress has been achieved by participants to improve the modelling approaches, and to optimize experimental technologies to calculate and measure accurately the residual stress distribution and distortion in welded assemblies.