火箭推进

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%。

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.

引言
1 缺陷试样的制造及修复
3 挖补法修补层压板测试结果与分析
4 结论

图1 中间夹杂无缺陷、缺陷、修补示意图<br/>Fig.1 Schematic diagram of non-defective sample, defective sample, repaired sample of internal inclusion defect

图1 中间夹杂无缺陷、缺陷、修补示意图
Fig.1 Schematic diagram of non-defective sample, defective sample, repaired sample of internal inclusion defect

图2 冲击无缺陷、缺陷、修补示意图<br/>Fig.2 Schematic diagram of non-defective sample, defective sample, repaired sample of impact defect

图2 冲击无缺陷、缺陷、修补示意图
Fig.2 Schematic diagram of non-defective sample, defective sample, repaired sample of impact defect

图3 层压板中间褶皱无缺陷、缺陷、修补示意图<br/>Fig.3 Schematic diagram of non-defective sample, defective sample, repaired sample of middle fold defect

图3 层压板中间褶皱无缺陷、缺陷、修补示意图
Fig.3 Schematic diagram of non-defective sample, defective sample, repaired sample of middle fold defect

图4 压缩试验装置<br/>Fig.4 Compression test device

图4 压缩试验装置
Fig.4 Compression test device

表1 压缩试验结果<br/>Tab.1 Results of compression test

表1 压缩试验结果
Tab.1 Results of compression test

图5 不同缺陷种类及修补对试样压缩性能影响<br/>Fig.5 Effect of different defects and repair on the compressive properties of sample

图5 不同缺陷种类及修补对试样压缩性能影响
Fig.5 Effect of different defects and repair on the compressive properties of sample

图6 中间夹杂压缩受力示意图<br/>Fig.6 Schematic diagram of compression force for internal inclusion defect

图6 中间夹杂压缩受力示意图
Fig.6 Schematic diagram of compression force for internal inclusion defect

图7 中间夹杂缺陷试样微观形貌<br/>Fig.7 Microstructure of internal inclusion defect

图7 中间夹杂缺陷试样微观形貌
Fig.7 Microstructure of internal inclusion defect

图8 中间夹杂无缺陷、缺陷、修补后试样压缩破坏模式<br/>Fig.8 Compression failure mode of non-defective sample, defective sample, repaired sample for internal inclusion defect

图8 中间夹杂无缺陷、缺陷、修补后试样压缩破坏模式
Fig.8 Compression failure mode of non-defective sample, defective sample, repaired sample for internal inclusion defect

图9 中间褶皱缺陷试样微观形貌<br/>Fig.9 Microstructure of middle fold defect

图9 中间褶皱缺陷试样微观形貌
Fig.9 Microstructure of middle fold defect

图10 中间褶皱无缺陷、缺陷、修补后试样压缩破坏模式<br/>Fig.10 Compression failure mode of non-defective sample, defective sample, repaired sample for middle fold defect

图10 中间褶皱无缺陷、缺陷、修补后试样压缩破坏模式
Fig.10 Compression failure mode of non-defective sample, defective sample, repaired sample for middle fold defect

图11 冲击缺陷试样微观形貌<br/>Fig.11 Microstructure of impact defect

图11 冲击缺陷试样微观形貌
Fig.11 Microstructure of impact defect

图12 冲击缺陷无缺陷、缺陷、修补后试样压缩破坏模式<br/>Fig.12 Compression failure mode of non-defective sample, defective sample, repaired sample for impact defect

图12 冲击缺陷无缺陷、缺陷、修补后试样压缩破坏模式
Fig.12 Compression failure mode of non-defective sample, defective sample, repaired sample for impact defect

[1] YI X S, DU S Y, ZHANG L T.Chinese material engineering ceremony(10): composite engineering[M].Beijng: Chemical Industry Press, 2006.
[2] 高禹, 李洋洋, 王柏臣, 等.先进树脂基复合材料在航空发动机上的应用及研究进展[J].航空制造技术, 2016(21): 16-21.
[3] 刘昌国, 邱金莲, 陈明亮.液体火箭发动机复合材料喷管延伸段研究进展[J].火箭推进, 2019, 45(4): 1-8.

备注

引言

1 缺陷试样的制造及修复

3 挖补法修补层压板测试结果与分析

4 结论

期刊信息