An energy dissipation-based fatigue crack growth model
Source abstract
Abstract
Abstract This paper presents a local approach to analyze the fatigue crack growth rate (FCGR) through the characterization on the dissipative process of fatigue crack tip zone. An energy dissipation-based FCGR model is established, and a dedicated thermographic method for dissipated energy assessment in the cyclic plastic zone is developed. Fatigue crack growth tests are conducted on the 316L steel under the varied stress ratios. The results demonstrate that the fatigue crack growth process can be well characterized by the near-tip energy dissipation. The proposed FCGR model shows, however, an unexpected stress-ratio-dependence. This dependence is analyzed by the crack closure effect, and the FCGR model is improved by introducing an effective energy dissipation rate concept.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · High Temperature Alloys and Creep · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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