基于FBG的复合材料成型与冲击监测研究

复合材料科学与工程 ›› 2014, Vol. 0 ›› Issue (5): 9-12.

基于FBG的复合材料成型与冲击监测研究

武雪^1*, 李炜^1,2

1.东华大学纺织学院,上海201620;
2.纺织面料技术教育部重点实验室,上海201620

收稿日期:2013-09-16 出版日期:2014-05-28 发布日期:2021-09-14
作者简介:武雪(1989-),女,硕士,主要研究方向为光纤光栅监测碳纤维复合材料。

RESEARCH OF FBG-BASED COMPOSITE MATERIAL MOLDING AND IMPACT MONITORING

WU Xue^1*, LI Wei^1,2

1. College of Textile Engineering, DongHua University, Shanghai 201620, China;
2. Fabric Laboratory of Education Ministry, Shanghai 201620, China

Received:2013-09-16 Online:2014-05-28 Published:2021-09-14

摘要/Abstract

摘要： 碳纤维复合材料(CFRP)作为一种先进复合材料得到了广泛应用,但由于层合板结构薄弱的层间性能,致使其在受到外界冲击时,内部极易发生分层损伤,造成力学性能的下降并带来安全隐患。本文考虑将光纤Bragg光栅传感器(FBG)埋入碳纤维复合材料层合板中,对复合材料的真空辅助成型工艺及单次冲击进行了监测研究。实验结果表明,FBG可以有效监测复合材料成型过程中的温度、应变变化,并反映其存在的残余应变;在低能量冲击条件下,可以监测到复合材料内部应变变化及内部损伤情况,为FBG监测CFRP层合板的低速冲击损伤提供了依据。

关键词: 复合材料, 光纤Bragg光栅, RTM成型, 固化, 低能量冲击

Abstract: Carbon fiber composite (CFRP) is an advanced composite material that has been widely used, but internal delamination damage can easily occur when suffering an external shock due to its weak interlayer performance, which will result in mechanical properties declination and security risk. This paper considers embedding the fiber Bragg grating sensor (FBG) in carbon fiber composite laminates to monitor the RTM molding process and the impact response of CFRP plate under low-energy impact. Experimental results show that FBG can effectively monitor the temperature and strain variation during the molding process, and reflects the presence of residual strain. The strain variation and internal injuries within the composite can be monitored at low energy impact conditions. This work help to build a basis for low-energy impact damage.

Key words: composite materials, fiber bragg grating, RTM molding, cure, low-energy impact

中图分类号:

TB332

武雪, 李炜. 基于FBG的复合材料成型与冲击监测研究[J]. 复合材料科学与工程, 2014, 0(5): 9-12.

WU Xue, LI Wei. RESEARCH OF FBG-BASED COMPOSITE MATERIAL MOLDING AND IMPACT MONITORING[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(5): 9-12.

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