Rapid evaluation of fatigue limit using energy dissipation
Rapid evaluation of fatigue limit using energy dissipation
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DOI：
10.1111/ffe.13989
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发表时间：
2023-03-15
影响因子：
3.7
通讯作者：
Khonsari, Michael M.
中科院分区：
文献类型：
--
作者：
Mahmoudi, Ali;Khonsari, Michael M.
讨论了基于循环加载过程中能量耗散的疲劳极限（持久极限）快速估算的四种不同实验方法。所提出的方法使用能量耗散和热成像技术，可以可靠地评估材料的疲劳极限进行疲劳试验上的一个单一的标本。结果表明，在疲劳极限以上的应力水平上，损伤累积释放的能量改变了能量耗散的趋势，这种趋势可以用来预测疲劳极限。CS 1018和SS 304试样的实验结果来说明所提出的方法的实用性。
Four different experimental approaches for rapid estimation of fatigue limit (endurance limit) based on energy dissipation during cyclic loading are discussed. The presented approaches use energy dissipation and thermography and can reliably evaluate the fatigue limit of material by conducting the fatigue test on a single specimen. Results show that the released energy due to damage accumulation at the stress levels above the fatigue limit changes the trend of energy dissipation and that this trend can be used to predict the fatigue limit. Experimental results on CS 1018 and SS 304 specimens are presented to illustrate the utility of the proposed methods.