Fiber Bragg grating sensors for fatigue monitoring of composite

被引：0
|
作者：
Guo Zhansheng [1 ]
Zhang Junqian [1 ]
Hu Hongjiu [1 ]
Guo Xingming [1 ]
机构：
[1] Shanghai Univ, Shanghai Inst Appl Math & Mech, Shanghai 200072, Peoples R China
来源：
PROCEEDINGS OF THE 2007 INTERNATIONAL CONFERENCE ON ADVANCED FIBERS AND POLYMER MATERIALS VOLS 1 AND 2 | 2007年
关键词：
fiber Bragg grating sensors; composites; cyclic loading; fatigue damage detection;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Fiber Bragg grating sensor can be used to monitor the mechanical behavior of composite. The internal strain of composite during a constant stress amplitude fatigue testing process was monitored with fiber Bragg gratings sensors. FBG sensors as a fatigue indicator can reveal Young's modulus decrease of the specimen, which is a direct index of damage. FBG sensors can not only be embedded in composite laminates to detect fatigue damage, but also have excellent durability compared with other sensors such as electric strain gauges. After 1 million cycles, the FBG sensors can still keep good sensibility. FBGs as a fatigue indicator are a novel sensor to monitor, evaluate and give crash alert for the health state of composites during their whole service life.
引用
收藏
页码：431 / 434
页数：4
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