航天推进技术研究院主办
ZHANG Wanqing,LI Hongchun,SHI Yong.Research on compressive properties of composite laminates by patching repair[J].Journal of Rocket Propulsion,2020,46(04):103-108.
挖补法修补复合材料层压板压缩性能
- Title:
- Research on compressive properties of composite laminates by patching repair
- 文章编号:
- 1672-9374(2020)04-0103-06
- Keywords:
- composite; laminate; defect; patching repair; compression property
- 分类号:
- V252
- 文献标志码:
- A
- 摘要:
- 为了研究中间夹杂、中间褶皱、冲击缺陷对复合材料层压板压缩性能的影响,及通过挖补法修补3种缺陷后的效果,采用在复合材料层压板上人为制造中间夹杂、中间褶皱、冲击缺陷的方法,并采用挖补法分别对3种缺陷进行修补,最后分别测试缺陷试样、修补后试样及无缺陷试样的压缩性能,并用扫描电镜观察缺陷试样破坏后的微观形貌,分析其破坏机理。试验表明:冲击缺陷对试样压缩强度影响最大,其次为中间褶皱缺陷,对试样压缩强度影响最小的为中间夹杂缺陷。采用挖补法修补对中间夹杂及中间褶皱缺陷修补效果显著,修补后压缩性能分别达到无缺陷试样压缩性能的102.9%和110.1%; 挖补法修补对冲击缺陷修补效果不理想,修补后压缩性能仅达到无缺陷试样压缩性能的67.9%。
- Abstract:
- The purpose is to study the influence of internal inclusion defect, middle fold defect and impact defect on the compressive properties of composite laminates, and the effect after repairing the three defects by the patching method.The method of artificially manufacturing internal inclusion defect, middle fold defect and impact defect on composite laminates, and repairing three defects by the patching method was applied.Finally, the compression properties of defective, repaired and non-defective samples were separately tested, and the micro-morphology of defective samples were observed by SEM to analyze their failure mechanism.The test shows that the impact defect has the largest impact on the compressive strength of the sample, followed by the internal inclusion defect, and the smallest impact on the compressive strength of the sample is the middle fold defect.The patching repair has significant effect for the middle fold defect and the internal inclusion defect, and the compression performance after patching repair reaches 102.9% and 110.1% of the compression performance of non-defective sample, respectively.However, the patching repair is not ideal for the impact defect, and the compression performance after pat-ching repair only reaches 67.9% of the compression performance of non-defective sample.
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备注/Memo
收稿日期:2019-12-06; 修回日期:2020-01-20
基金项目:陕西省重点研发计划项目(2018YBXM-G-2-3)
作者简介:张万卿(1989—),男,硕士,研究领域为橡塑密封设计