Quantitative thermographic method for fatigue life prediction under variable amplitude loading
Quantitative thermographic method for fatigue life prediction under variable amplitude loading
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DOI：
10.1111/ffe.13658
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发表时间：
2022-01
影响因子：
3.7
通讯作者：
E. Feng;Xiaogang Wang;Chao-shu Jiang;V. Crupi
中科院分区：
文献类型：
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作者：
E. Feng;Xiaogang Wang;Chao-shu Jiang;V. Crupi
定量热像法（QTM）以能量耗散作为疲劳指标，已成功地应用于预测材料和焊接接头在等幅载荷下的疲劳寿命。本研究提出的QTM方法预测变幅载荷下的疲劳寿命在低周和高周疲劳制度。实验数据，通过变幅载荷下的疲劳试验获得的，被用来应用开发的QTM方法，并证明它是能够考虑到加载顺序的效果。实现了疲劳寿命的良好预测。
Quantitative thermographic methodology (QTM), which takes energy dissipation as a fatigue indicator, has been successfully applied to predict the fatigue life of materials and welded joints under constant amplitude loading. This study advances the QTM approach for predicting the fatigue life under variable amplitude loading in both low and high cycle fatigue regimes. Experimental data, obtained by fatigue tests under variable amplitude loading, were used in order to apply the developed QTM approach and to demonstrate that it is able to take into account the loading sequence effect. Good predictions of the fatigue life were achieved.