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Effect of specimen geometry on low-cycle fatigue behavior of high-performance TMCP steel
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DOI：10.1016/j.jcsr.2026.110523.png)
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Abstract
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• LCF and ELCF behavior of TMCP steels was evaluated using cylindrical specimens. • Parallel length effects were quantified over strain amplitudes from 0.5% to 15%. • Short specimens (Le/D = 1.18) showed higher peak stress and longer fatigue life. • Specimen geometry effects were negligible for Le/D ≥ 1.76 under LCF conditions • Results suggest current geometric standards for LCF testing may be conservative.
Keywords:
Low-cycle fatigue
Constant strain amplitude
Cylindrical specimen
TMCP steel
Parallel length
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