Crack growth path of 30CrMnSiA steel under variable amplitude multiaxial loading
Source abstract
Abstract
Abstract Two-level step multiaxial fatigue tests were conducted to investigate the crack growth behavior and damage accumulation of 30CrMnSiA steel. When the first load step (50% of the fatigue failure life) is completed, main cracks of specimens have entered the stage Ⅱ propagation. The cracks gradually turn direction to propagate along the maximum normal stress planes of load step 2 under the second load step. The damage accumulation is mainly affected by the angle between the maximum normal stress planes of the two-level step loadings and the crack propagation length along the depth direction, it will also lead to large error of fatigue life prediction by the commonly used damage accumulation models.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Fire effects on concrete materials · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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