Yujia Liu1,2, Bo Xu1, Sen Tang3, Lang Li1, Chao He1, Qingyuan Wang1,2,3, Chong Wang1,2,*
The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.4, pp. 1-1, 2023, DOI:10.32604/icces.2023.010057
Abstract This paper presents a thermodynamic characterization method for estimating the internal crack growth
rate, which has been a puzzle in very high cycle fatigue research. A theoretical approach of surface
temperature is established with crack size, initiation site, and time for thin sheet material. Infrared
thermography is used to study the inner crack behavior and the heat dissipation phenomenon under 20 kHz
vibration loading on high-strength stainless steel. A numerical simulation reveals the consequent
temperature elevation on the surfaces by the heat generation at the crack tip and the heat conduction.
Ultimately, the internal crack growth rate and final fatigue… More >
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