Crack initiation and propagation process of fatigue test in semicircular notched plates at elevated temperature were conducted under strain-controlled condition in order to study the crack initiation/propagation/coalescence process and load decrease in structure having stress concentration. Test specimens made of SUS304 stainless steel are tested at and the geometry of the semicircular notched plate specimens are changed by diameter size of the circular notch in both of single-notched specimens and double-notched specimens. Photographs in all cycles were recorded to investigate crack initiation/propagation/coalescence as a function of number of applied cycle. The typical crack process is predicted by using the simplified method, namely, stress redistribution locus method as well as Neuber’s formula.
Crack Initiation Process for Semicircular Notched Plate in Fatigue Test at Elevated Temperature
Bubphachot, B., Watanabe, O., Kawasaki, N., and Kasahara, N. (April 4, 2011). "Crack Initiation Process for Semicircular Notched Plate in Fatigue Test at Elevated Temperature." ASME. J. Pressure Vessel Technol. June 2011; 133(3): 031403. https://doi.org/10.1115/1.4002539
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