The application of the infrared thermography on titanium alloy for studying fatigue behavior

P. Hou, J. Fan, Q. Guo, X. Guo


The infrared thermography is an attractive tool for studying the fatigue behavior of materials. Based
on two theoretical models of fatigue damage indicators, this work studied the fatigue properties of the virgin Ti-
6Al-4V alloy. According to the two damage indicators and the energy theory, the relationship between the
macro-phenomenon and the micro-structural evolution during fatigue process was discussed. The fatigue limit
of the titanium alloy was rapidly determined based on the measured temperature increment signals. The
capability of the infrared thermographic method on the evaluation of fatigue properties was validated.

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