Analysis and automated fatigue damage evaluation of a 17Mn1Si pipeline steel

Abstract

Digital identification and evaluation of the fatigue damage accumulation kinetics on the surface of the fatigue sensor from steel 17Mn1Si is performed using the digital image processing method. The accumulation of defects was assessed based on the analysis of the diagnostic results for individual stages of cyclic deformation. It is established that the graded nature of the fatigue crack growth is in a good agreement with the parameters of the image of the analyzed surface. Based on the gradual processing of the results obtained for the surface damage the main regularities in the development of shear and rotational processes are found. The theoretical preconditions and experimental results are presented.