Abstract
AbstractTitanium alloy is widely used in aeronautics engineering applications and undertakes high‐frequency fatigue load. Tests are performed to investigate the very high cycle fatigue (VHCF) behaviour of TC17 alloy through ultrasonic fatigue machine at R = 0.1. Thermal dissipation of VHCF for the alloy in 20 kHz frequency is also studied, and a model is proposed to describe the temperature increment of VHCF in the framework of thermodynamics by estimation of the inelastic thermal dissipation at active sites. Failure probability prediction method is used to evaluate the VHCF dispersion based on the multi‐scale method and fatigue thermal dissipation analysis.
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