| 复合材料气瓶漏点定位分析研究 |
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| 引用本文： | 孙文文,王俊锋,林松,张建宝,谢国君,王俊山. 复合材料气瓶漏点定位分析研究[J]. 纤维复合材料, 2012, 29(4): 3-7 |
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| 作者姓名： | 孙文文 王俊锋 林松 张建宝 谢国君 王俊山 |
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| 作者单位： | 航天材料及工艺研究所,北京,100076 |
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| 摘 要： | 某复合材料气瓶在疲劳试验中远低于平均疲劳寿命时即发生漏水,通过对复合材料气瓶整体损伤研究、异常区泄漏判定研究及微观分析,定位了漏水部位并对低疲劳寿命原因进行了分析.结果表明:内衬在制造过程中产生的微小凹坑缺陷是导致复合材料气瓶低疲劳寿命的原因,在疲劳试验中,凹坑缺陷作为疲劳裂纹源,产生应力集中,引发裂纹扩展,最终形成穿透性裂纹,导致复合材料气瓶提前泄漏.
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| 关 键 词： | 复合材料气瓶 薄壁金属内衬 疲劳 漏点定位 SEM 超声C扫描 荧光渗透检测 |
Study of Orientation of the Leak for Composite Overwrapped Pressure Vessel |
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| SUN Wenwen , WANG Junfeng , LIN Song , ZHANG Jianbao , XIE Guojun , WANG Junshan. Study of Orientation of the Leak for Composite Overwrapped Pressure Vessel[J]. Fiber Composites, 2012, 29(4): 3-7 |
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| Authors: | SUN Wenwen WANG Junfeng LIN Song ZHANG Jianbao XIE Guojun WANG Junshan |
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| Affiliation: | (Aerospace Research Institute of Materials ＆ Processing Technology, Beijing 100076) |
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| Abstract: | The composite overwrapped pressure vessel（COPV） was failed unconventionally during the fatigue test. To find out the reason, several researches were done including unitary damage, estimation of the unwonted part, and microcosmic analysis. The results show that the small pit on the inside of the aluminum liner which was brought in during the manufacture caused the failure. During the fatigue test, the stress focused on the disfigurement made the crack grew. Finally, the penetrable crack that grew out of the pit caused the leak. |
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| Keywords: | COPV thin - walled metal liner fatigue leak orientation SEM ultrasonic C - scan testing fluorescence detection |
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