Abstract
A good analysis of residual stress is a key to the accurate structural integrity assessment of an engineering component and can particularly have an influence on the life extension of an engineering component. Several methods and tools exist for analyzing residual stresses. These are categorized by invasive and non-invasive techniques. Invasive techniques are widely available and known as mechanical strain relief techniques. However, when using mechanical strain relief techniques to measure residual stress in an engineering component containing a highly triaxial residual stress field close to yield extra care needs to be taken since the creation of a free surface as part of the measurement procedure which lead to the plastic redistribution of the residual stress field. The elastic inversion algorithms of the experimental procedure does not usually account for the plastic redistribution.
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