Research on fatigue behavior evaluation and fatigue fracture mechanisms of cruciform welded joints

Thermographic analysis of the fatigue heating process for AZ31B magnesium alloy

“…It is well-known that the mechanical work mainly dissipates as heat during fatigue evolution [1]. Based on this phenomenon, the thermographic technique has been widely applied to detect the occurrence of fatigue damage [2] and to investigate the fatigue process of materials and mechanical details.…”

A new application of the infrared thermography for fatigue evaluation and damage assessment

“…2 in order to consider the safety in practical engineering. This can be determined by calculating the standard deviation of the remaining samples since the dependent variable log(N f ) follows the Gaussian log-normal distribution [17]. As a result, the fatigue limit at P s = 99% survival probability was evaluated as 149 MPa by extrapolating the S-N curve down to the specified cycle number 5 Â 10 6 .…”

Effect of fretting wear on very high cycle bending fatigue behaviors of FV520B steel

“…The specific heat treatment process includes solution treatment at (1323 ± 10) K for 1.5 ~ 2.5 h followed by air-cooling, refining treatment at (1123 ± 10) K for 1.5 ~ 2.5 h followed by oil-cooling and aging treatment at (753 ± 10) K for 2.0 ~ 3.0 h followed by air-cooling. After the series of heat treatments, the elastic modulus, density, tensile strength, yield strength at 0.2% offset and Vickers hardness of this steel are 210 GPa, 7.86 g/cm 3 , 1309 MPa, 1080 MPa and 3.68 GPa, respectively [20].…”