| 低速冲击后复合材料蜂窝夹芯板的疲劳特性 |
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| 引用本文： | 程小全,寇长河,郦正能.低速冲击后复合材料蜂窝夹芯板的疲劳特性[J].航空学报,1998,19(6):101-104. |
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| 作者姓名： | 程小全 寇长河 郦正能 |
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| 作者单位： | 北京航空航天大学飞行器设计及应用力学系,北京,100083 |
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| 摘 要： | 对含低速冲击损伤的蜂窝夹芯板试样进行了拉－拉、压－压和拉－压等３种疲劳试验，以及疲劳后的静载拉伸、压缩破坏试验。用Ｘ光技术、热揭层技术和外观检测等对疲劳损伤的扩展和疲劳后静载的破坏进行了研究，分析了疲劳损伤对蜂窝夹芯板性能的影响。结果表明，低速冲击后蜂窝夹芯板单向疲劳性能良好，而双向疲劳性能可能较差。
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| 关 键 词： | 蜂窝结构 冲击 疲劳 拉伸强度 压缩强度 |
FATIGUE CHARACTERIZATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS AFTER LOW VELOCITY IMPACT |
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| Cheng Xiaoquan,Kou Changhe,Li Zhengneng.FATIGUE CHARACTERIZATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS AFTER LOW VELOCITY IMPACT[J].Acta Aeronautica et Astronautica Sinica,1998,19(6):101-104. |
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| Authors: | Cheng Xiaoquan Kou Changhe Li Zhengneng |
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| Institution: | Department of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083 |
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| Abstract: | Tension/tension , compression/compression and tension/compression fatigue tests were carried out on composite honeycomb core sandwich specimens after low velocity impact. Then they were tested to fail by tensile or compressive loads. Some methods were used to study the fatigue damage development and static failure after fatigue: X ray, deply, and visual inspection. The influences of fatigue damage on the properties of Nomex honeycomb core sandwich panels were analyzed.The results showed that the unidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact were very good.The bidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact might be worse. |
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| Keywords: | honeycomb structure impact fatigue tensile strength compressive strength |
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