Residual Stress Management: Measurement, Fatigue Analysis and Beneficial Redistributuion

Author:  Y. Kudryavtsev and J. Kleiman
Source:  2004 SEM X International Experimental and Applied Mechanics
Doc ID:  2004051
Year of Publication:  2004
Abstract:  
ABSTRACT In many cases the residual stresses are one of the main factors, determining the engineering properties of parts and structural components. This factor plays a significant role in fatigue of welded elements. The influence of residual stresses on the multi-cycle fatigue life of butt and fillet welds can be compared with the effects of stress concentration. The main stages of residual stress management are considered in this paper. A number of new engineering tools such as ultrasonic computerized complex for residual stress measurement, software for analysis of the effect of residual stresses on the fatigue life of welded elements as well as a new technology and, based on it, compact system for beneficial redistribution of residual stresses by ultrasonic peening are introduced. Examples of practical application of the developed engineering tools for residual stress management, directed at fatigue life improvement, elimination of distortions in welded elements, residual stress relieving and other applica-tions are discussed