The internal strain of three-dimensional braided composites with co-braided FBG sensors

被引：16
|
作者：
Li, Xianghua [1 ]
Zhao, Chunsheng
Lin, Jun
Yuan, Shenfang
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Precis Driving Lab, Nanjing 210016, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Math & Phys, Nanjing 210003, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, Aeronaut Key Lab Smart Mat & Struct, Nanjing 210016, Peoples R China
来源：
OPTICS AND LASERS IN ENGINEERING | 2007年 / 45卷 / 07期
关键词：
3-D braided composites; braiding methods; constitutive modeling; optical fiber sensors; internal strain;
D O I：
10.1016/j.optlaseng.2006.12.003
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The performance analysis of three-dimensional (3-D) braided composites is made difficult by their complex and interlacing structure, and is still under development. To get complete first-hand data on the material parameters of these composites, co-braided optical fiber sensors (OFS) can be used to measure the internal strain. This information is helpful for subsequent stiffness predictions and failure analysis. This paper introduces a method of incorporating OFS into braided composites, and establishes a constitutive theoretical model for the hybrid material. Experiments are conducted to measure the internal strain of specimens under tension, and the results are compared to theoretical predictions. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：819 / 826
页数：8
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