| 引用本文: | 江大志,王兴业,沈为,等.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.[点击复制] |
| Jiang Dazhi,Wang Xingye,Shen Wei,et al.Impact Damage of Composite Laminates Measured by Variance of Wave Speed[J].Journal of National University of Defense Technology,1997,19(1):24-27[点击复制] |
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| 波速测量层合复合材料冲击损伤实验 |
| 江大志1, 王兴业1, 沈为2, 黄玉盈2 |
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(1.国防科技大学 材料工程与应用化学系 湖南 长沙 410073;2.华中理工大学 力学系 武汉 430074)
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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。 |
| 关键词: 层合复合材料, 横向冲击, 应变波, 损伤阈值, 损伤扩展 |
| DOI： |
| 投稿日期：1996-05-24 |
| 基金项目:国家自然科学基金资助 |
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| Impact Damage of Composite Laminates Measured by Variance of Wave Speed |
| Jiang Dazhi1, Wang Xingye1, Shen Wei2, Huang Yuying2 |
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(1.Department of Material Engineering & Applied Chemistry, NUDT, Changsha, 410073;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. |
| Keywords: composite laminates, transverse impact, strain wave, damage threshold, damage propagation |
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