加载模式对层合复合材料疲劳性能的影响

Proceedings of The Eighteenth International Conference of Experimental Mechanics Pub Date : 2018-06-11 DOI:10.3390/ICEM18-05321

A. Movahedi-Rad, A. P. Vassilopoulos, T. Keller

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引用次数: 2

摘要

研究了载荷中断对(±45)2s角层玻璃/环氧复合材料层合板疲劳性能的影响。在不同应力水平下进行恒幅疲劳试验，得到基线疲劳数据。此外，在相同最大循环应力水平下连续加载达到疲劳寿命的20%后，通过重复去除循环加载2小时进行中断疲劳实验。断裂疲劳加载比连续疲劳加载的疲劳寿命更长。

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147 Effect of loading pattern on fatigue behavior of laminated composites

The effect of load interruptions on the fatigue behavior of (±45)2s angle-ply glass/epoxy composite laminates was investigated in this work. Constant amplitude fatigue experiments were performed at different stress levels to derive base line fatigue data. In addition, interrupted-fatigue experiments were performed by removing the cyclic loading for two hours repetitively, after cycling for 20% of the fatigue life achieved under continuous loading at the same maximum cyclic stress level. The specimens loaded under interrupted fatigue exhibited longer fatigue live than those continuously loaded until failure.

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Proceedings of The Eighteenth International Conference of Experimental Mechanics

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