| 整体缝合夹芯结构复合材料力学性能 |
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| 引用本文： | 曾竟成,魏凯耀,杜刚,杨金水,鞠苏.整体缝合夹芯结构复合材料力学性能[J].国防科技大学学报,2016,38(1):9-14. |
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| 作者姓名： | 曾竟成 魏凯耀 杜刚 杨金水 鞠苏 |
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| 作者单位： | 国防科学技术大学 航天科学与工程学院,国防科学技术大学 航天科学与工程学院,国防科学技术大学 航天科学与工程学院,国防科学技术大学 航天科学与工程学院,国防科学技术大学 航天科学与工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 所设计的新型整体缝合泡沫夹芯复合材料结构,能够避免一般斜缝方式引起纤维交叉损坏的弊端。采用真空导入模塑工艺制备整体缝合泡沫夹芯结构复合材料,研究缝合结构、缝合方式以及缝合纱线用量对整体缝合泡沫夹芯复合材料平压力学性能和弯曲性能的影响。结果表明,新型缝合结构在保证平压力学性能的同时,相比于垂直缝合结构弯曲破坏载荷提高了94.4%;穿透缝合方式能够显著提高试样的平压强度和弯曲破坏载荷;随着缝合纱线用量的增加,整体缝合泡沫夹芯复合材料的压缩和弯曲性能显著提高。
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| 关 键 词： | 夹芯结构 缝合 复合材料 平压性能 弯曲性能 |
| 收稿时间： | 9/9/2015 12:00:00 AM |
Mechanical performance of integrated stitched sandwich composite |
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| ZENG Jingcheng,WEI Kaiyao,DU Gang,YANG Jinshui and JU Su.Mechanical performance of integrated stitched sandwich composite[J].Journal of National University of Defense Technology,2016,38(1):9-14. |
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| Authors: | ZENG Jingcheng WEI Kaiyao DU Gang YANG Jinshui and JU Su |
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| Institution: | College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China,College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China and College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | New type stitched structure of sandwich composite materials which can avoid the disadvantages of fiber cross caused by the traditional angled stitched was designed The integrated stitched sandwich composite materials was prepared by vacuum infusion molding process(VIMP). The flatwise compression test and three-point bending test was employed to study the effect of stitching structure, stitching mode and stitching yarn on compression properties and bending properties. The results show that the integrated stitched sandwich composite materials have excellent compression mechanical properties, and the flexure failure load increased by 94.4% compared to the vertical structure; compressive strength and bending load were improved significantly by penetrate stitched mode compared to the un-penetrate stitched mode; the compression properties and flexure properties of stitched sandwich composite materials have been improved with the increase of stitching yarn. |
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| Keywords: | Sandwich stitched composite flatwise compression properties bending properties |
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