Journal
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
Volume 40, Issue 7, Pages 1154-1163Publisher
WILEY
DOI: 10.1111/ffe.12576
Keywords
exponential model; fatigue life prediction; fatigue crack growth in pipes; part-through crack; through-thickness crack growth
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In the present work, an attempt has been made to study the fatigue crack growth in a part-through circumferentially notched pipe specimen. It has been observed that under four-point bend cyclic load, the crack propagates in a transverse plane in the radial direction initially followed by propagation in the circumferential direction. The crack extension in the circumferential direction resulted crack growth retardation in the radial direction. This behaviour of the fatigue crack growth has been modelled, and a fatigue life prediction methodology based on an exponential model has been applied for prediction of fatigue crack growth.
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