Abstract
A digital image measurement (DIM) system is used to study the plastic damage accumulation around a notch under conditions of low-cycle fatigue. This system incorporates a contrast correlation method to evaluation the level of plastic damage at each point of the studied area from two images acquired before and after the introduction of fatigue deformation. A compact tension specimen of 304 stainless steel with a notch radius of 1 mm is analyzed during the stages of fatigue crack initiation and growth. The results obtained using this measurement system are compared with those attained by means of a recrytallization technique.
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Díaz, F.V., Armas, A.F., Kaufmann, G.H. et al. Fatigue damage accumulation around a notch using a digital image measurement system. Experimental Mechanics 44, 241–246 (2004). https://doi.org/10.1007/BF02427889
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DOI: https://doi.org/10.1007/BF02427889