Fatigue Crack Growth of Notched Tubular Specimen under Biaxial Loading Conditions

Abstract:

Crack growth behavior of S45C notched tubular specimen was studied to predict fatigue crack initiation and crack propagation under biaxial loading conditions. Stress-strain field near the hole was analyzed by ANSYS. The crack initiation lives and the crack initiation locations were predicted from strain based theories, and the analysis results were compared with the test results. Crack propagation behaviors were studied to understand the reason of crack branching and crack growth rates changing under biaxial loading conditions. Crack growth direction was also observed to find the governing factors of the fatigue damage under biaxial loading conditions.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 139-144
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.139
• Online since: March 2006
• Authors: Hyun Woo Lee, Se-Jong Oh
• Keywords: Biaxial Loading, Crack Growth Direction, Crack Growth Rate Change, Crack Initiation, Notched Tubular Specimen

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