Mechanical Properties of Embedded Co-Cured Stitched Damping Composite

doi:10.7652/xjtuxb201911014

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Mechanical Properties of Embedded Co-Cured Stitched Damping Composite

更新时间：2025-07-09

- Mechanical Properties of Embedded Co-Cured Stitched Damping Composite
- Vol. 53, Issue 11, Pages: 96-100(2019)
- 作者机构：
  
  青岛理工大学机械工程学院,山东,青岛,266520
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201911014
  CLC： TB332
- Online First：10 November 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
Mechanical Properties of Embedded Co-Cured Stitched Damping Composite[J]. 2019, 53(11): 96-100.
DOI：

Mechanical Properties of Embedded Co-Cured Stitched Damping Composite[J]. 2019, 53(11): 96-100. DOI： 10.7652/xjtuxb201911014.

摘要

为了提高复合材料的层间结合性能

满足其三维力学性能可设计性的要求

提出了嵌入式共固化缝合阻尼复合材料结构

开发了嵌入式共固化缝合阻尼复合材料的制作工艺

其中阻尼材料的硫化温度和时间与预浸料内树脂的固化温度和时间相同。采用改进的锁式缝合方法缝合铺层后的预成型体

使用热压罐制备出嵌入式共固化缝合阻尼复合材料试件。对试件进行了层间剪切试验、自由衰减试验、拉伸破坏试验

结果表明:阻尼性能与最大拉伸力随着针距的增大而增大

层间结合性能随针距的增大而变差。其中

在阻尼层厚度为0.1 mm的情况下

改变针距

缝合后材料的相对阻尼比为2.16%～2.92%

拉伸强度为412.9～427.4 MPa

层间结合强度为6.12～7.91 MPa。该研究可为对三向力学性能有要求的复杂受载大阻尼复合材料构件的广泛应用提供参考。

Abstract

To improve the interlayer bonding performance and meet the design requirements of 3D mechanical properties of composite materials

an embedded co-cured stitched damping structure was presented. The fabrication process of the embedded co-cured stitched damping composites was developed. The vulcani-ation temperature and time of the damping material were the same as the curing temperature and time of the resin in the prepreg. The preformed structure was stitched by using an improved lock stitching method

and then the embedded co-cured stitched damping composite specimens were finally prepared in autoclave. Free decay test

interlaminar shear test and tensile test were conducted on the specimens. The results showed that the damping performance and maximum tensile stress were increased but the interlayer bonding performance was decreased with the increase of the stitch length. When the damping layer thickness was 0.1 mm and stitch length was changed

the damping ratio

tensile strength and

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references

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