| 波速测量层合复合材料冲击损伤实验 |
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| 引用本文： | 江大志,王兴业,沈为,黄玉盈.波速测量层合复合材料冲击损伤实验[J].国防科技大学学报,1997,19(1):24-27. |
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| 作者姓名： | 江大志 王兴业 沈为 黄玉盈 |
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| 作者单位： | 国防科技大学材料工程与应用化学系，华中理工大学力学系 |
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| 摘 要： | 在层合复合材料横向冲击试验中，用应变片记录层合板表层在冲击过程中的应变响应，根据波的传播理论和连续损伤力学，从波速变化间接测得冲击下材料的损伤及损伤率。通过实验测得玻璃纤维／环氧（ＧＥ）正交层合板的动态损伤阈值，并证实了ＧＥ复合材料在拉伸阶段比在压缩阶段有更快的损伤扩展速率
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| 关 键 词： | 层合复合材料，横向冲击，应变波，损伤阈值，损伤扩展 |
| 收稿时间： | 1996/5/24 0:00:00 |
Impact Damage of Composite Laminates Measured by Variance of Wave Speed |
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| Jiang Dazhi,Wang Xingye,Shen Wei and Huang Yuying.Impact Damage of Composite Laminates Measured by Variance of Wave Speed[J].Journal of National University of Defense Technology,1997,19(1):24-27. |
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| Authors: | Jiang Dazhi Wang Xingye Shen Wei and Huang Yuying |
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| Institution: | 1.Department of Material Engineering & Applied Chemistry, NUDT, Changsha, 410073;1.Department of Material Engineering & Applied Chemistry, NUDT, Changsha, 410073;2.Department of Mechanics, HUST, Wuhan, 430074;2.Department of Mechanics, HUST, Wuhan, 430074 |
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| Abstract: | The response of strain on the face of composite laminates impacted by a projectile was recorded by strain gages.According to the theory of wave propagation and continum damage mechanics,the damage and damage threshold in the glass fiber/epoxy composite laminates were measured by variance of wave speed.It was found that the damage propagation in glass fiber/epoxy composites was faster during tension than during compression. |
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| Keywords: | composite laminates transverse impact strain wave damage threshold damage propagation |
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