| 复合材料疲劳性能的能量耗散试验研究 |
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| 引用本文： | 潘应雄,童小燕,李斌.复合材料疲劳性能的能量耗散试验研究[J].强度与环境,2009,36(1). |
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| 作者姓名： | 潘应雄 童小燕 李斌 |
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| 作者单位： | 1. 西北工业大学航空学院,西安,710072;西北工业大学无人机特种技术围防科技重点实验室,西安,710072
2. 西北工业大学无人机特种技术围防科技重点实验室,西安,710072 |
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| 摘 要： | 材料的损伤、屈服、断裂及破坏过程都是一个需要消耗能量的过程,材料的疲劳是.个耗散的过程.通过对T300/QY8911纤维增强复合材料层合板的疲劳试验,应用能量耗散方法对层合板的疲劳性能和损伤进行分析评估,并通过红外热像仪宏观监测试样表面平均温升的变化趋势.主要包括以下几个方面:1)分析铺层方式对能量耗散密度的影响以及能耗密度与材料疲劳性能和损伤的内在联系,发现能耗密度在初始循环阶段(约为循环寿命数的10%)随着循环数的增加上升较慢,在后一循环阶段出现急剧攀升趋势;2)通过监测试样表面甲均温升的变化趋势,发现试样表面温度的宏观变化趋势与能耗密度的变化趋势具有相似性.
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| 关 键 词： | 复合材料 能耗密度 失效 疲劳试验 |
Experimental research on fatigue behavior of composites using energy dissipation methodology |
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| PAN Ying-xiong,TONG Xiao-yan,LI Bin.Experimental research on fatigue behavior of composites using energy dissipation methodology[J].Structure & Environment Engineering,2009,36(1). |
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| Authors: | PAN Ying-xiong TONG Xiao-yan LI Bin |
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| Institution: | PAN Ying-xiong1,2 TONG Xiao-yan1,2 LI Bin2 |
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| Abstract: | An approach is presented to analyze and evaluate the fatigue behavior and damage in the T300/QY8911 composite plies.The method is based on energy dissipation with tensile-tensile fatigue experiment on the CFRP composite laminates.It comprises the follows:1)The relations between the plies and dissipated energy density are found,then,the dissipated energy is used to evaluate the internal damage and failure in the composite materials.It finds that the dissipated energy density grows slowly up at the first stag... |
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| Keywords: | composites dissipated energy density failure fatigue experiment |
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