| 环氧基复合材料的混合模式分层 |
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| 引用本文： | 赵时熙.环氧基复合材料的混合模式分层[J].航空学报,1994,15(12):1456-1462. |
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| 作者姓名： | 赵时熙 |
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| 作者单位： | 北京航空航天大学 |
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| 摘 要： | 采用混合模式弯曲试验研究了Ｔ３００／Ｍ１０和ＨＴＡ／６３７６两种复合材料静态和疲劳加载的分层断裂行为。在不同α／Ｌ比和混合模式比条件下加载,两种材料呈现脆性不稳定或脆性稳定的裂纹扩展。在疲劳加载中,裂纹扩展始终是稳定的。混合模式比对分层韧性、疲劳裂纹扩展速率和疲劳门槛值均有明显影响。
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| 关 键 词： | 石墨—环氧复合材料 混合 模式 应变能释放率 疲劳试验 裂纹扩展 阈 |
MIXEC-MODE DELAMINATION OF EPOXY-BASED COMPOSITES |
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| Zhao Shixi.MIXEC-MODE DELAMINATION OF EPOXY-BASED COMPOSITES[J].Acta Aeronautica et Astronautica Sinica,1994,15(12):1456-1462. |
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| Authors: | Zhao Shixi |
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| Institution: | 1. Faculty 104, Beijing University of Aeronautics and Astronautics, Beijing, 100083;2. German Aerospace Research Establishment, Braunschweig, 38108 |
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| Abstract: | he mixed mode bending(MMB)test was employed in an investigation of delamination fracture behavior in static and fatigue loading for graphites/epoxy composites T300/M 10 and HTA/6376.As specimens were loaded at different ratio of α/L for fifferent mixed mode ratios,both the investigated composites exhibited brittle unstable or brittle stable behavior of crack growth.During fatigue loading stable crack growth was observed over the en-tire range of crack lengths investigated.The mixed mode ratio has a distinct effect on the delamination toughness,the fatigue crack growth rate and the threshold of composites. |
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| Keywords: | raphite epoxy composites mixed mode strain energy release rate fatigue tests crack propagation thresholds |
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