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Research on Health Monitor for Three-dimensional Braided Composite Material

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3 Author(s)
LI Yi ; Sch. of Textile, Tianjin Polytech. Univ., Tianjin, China ; WAN Zhenkai ; LI Jialu

This paper describes two methods of Fiber Bragg Grating (FBG) embedded in the three-dimensional (3D) braided composite materials and acoustic emission health monitor for 3D braided composite materials condition. The paper mainly analyses the relations of FBG change and the inner straining under the stretching on materials. It is provided that the way of signal collection and processing. The experimental results proved that FBG sensors have exceptional sense characteristic. The braided angle of composites has a little influence on FBG signal. FBG embedded in the 3D braided composite materials has not more effect mechanical property of materials. According to two health monitoring methods and the particularity of 3D braided composites, the health monitoring method based on FBG much more applies to dynamic monitoring on 3D composites special field. This research provides basis for the study and application of advanced intelligent composites.

Published in:

2011 Third International Conference on Measuring Technology and Mechatronics Automation  (Volume:2 )

Date of Conference:

6-7 Jan. 2011