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- Title
A high-cycle fatigue accumulation model based on electrical resistance for structural steels.
- Authors
SUN, B.; YANG, L.; GUO, Y.
- Abstract
For high-cycle fatigue of metals, the DC electrical resistance is a more sensitive parameter to the initiation of micro-cracks during the irreversible fatigue damage accumulation process. This implies that the electrical resistance is a suitable parameter that can be consistent with the fatigue damage physical mechanism. The relation between the ratio of electrical resistance changes and the cyclic fraction of the fatigue specimen may reasonably represent deterioration in mechanical properties of structural steels during the high-cycle fatigue process. The high-cycle fatigue damage accumulation model based on electrical resistance for structural steels was proposed. The model was verified by some experimental data for three structural steels; normalized 45C steel, 20 Mn steel and 16 Mn steel, and good agreement was obtained. The corresponding fatigue lifetime on the basis of the electrical resistance model was also performed. The results show that the approach to fatigue lifetime prediction and failure based on the electrical resistance is a good non-destructive technique.
- Subjects
STRUCTURAL steel fatigue; MECHANICAL properties of metals; METALLURGY; IRON &; steel building; CONSTRUCTION materials; CIVIL engineering
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2007, Vol 30, Issue 11, p1052
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/j.1460-2695.2007.01175.x