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Indexed by:会议论文

Date of Publication:2013-06-16

Included Journals:EI、Scopus

Volume:3

Page Number:2088-2093

Abstract:It is a new and valuable research that studying the influence of heat treatments on fatigue performance of materials by the infrared thermographgic method. Based on three theoretical models of fatigue indicators, this paper studied mechanical properties of the virgin and heat-treated FV520B steels. With the three indicators and the energy theory, comparison analysis of macro-phenomenon and microstructure evolution during fatigue of the two type specimens was performed. Using the intrinsic dissipation, fatigue limits were fast determined. Influence of heat treatments on mechanical properties and fatigue life was discussed. The research shows that the accuracy of the lock-in thermography could satisfy the needs of engineering design.