Development of a Material Model for the Use in Life-Time Estimate of Structures

This study is focused on developing of a material capable to be used for numerical prediction of mechanical structures life time. A damage model was implemented starting from a classical stress-strain dataset and it is influence over the results was evaluated. An enhanced analysis of the strain field was achieved by using tensile testing on shaped specimens in conjunction with Digital Image Correlation (DIC). A specialized method, X-Ray Diffraction (XRD), for the investigation of the residual stresses was also used to correlate the strain field with the residual stresses stored by the deformed specimens.