Use of fiber Bragg grating sensors for monitoring delamination damage propagation in glass-fiber reinforced composite structures

被引：7
作者：
Kakei A. [1 ,2 ,3 ]
Epaarachchi J.A. [1 ,2 ]
机构：
[1] School of Mechanical and Electrical Engineering, University of Southern Queensland, Toowoomba, 4350, QLD
[2] Centre for Future Materials, University of Southern Queensland, Toowoomba, 4350, QLD
[3] College of Engineering, University of Kirkuk, Kirkuk
来源：
Frontiers of Optoelectronics | 2018年 / 11卷 / 1期
关键词：
composite; damage modelling; fiber Bragg grating (FBG) sensors; fracture energy;
D O I：
10.1007/s12200-018-0761-9
中图分类号：
学科分类号：
摘要：
Embedded fiber Bragg grating (FBG) sensors have been widely used for damage monitoring of fiber composite structures for a few decades. However, many remaining engineering challenges have delayed FBG based in situ structural health monitoring (SHM) systems. One of the major problem associated with FBG based SHM system is the unavailability of reliable data processing algorithms. The present work details a study which has been undertaken for identification of delamination crack propagation in fiber reinforced polymer (FRP) composite plate under uniaxial loading. The strain measured by embedded FBG sensors closer to the crack tip was used to qualitatively and quantitatively analyze delamination damage propagation using recently proposed elasto-plastic model. Strain energy release rate was calculated and compared with the model prediction. The study has concluded that the delamination crack propagation in a FRP composite can be monitored successfully using an integral approach of FBG sensors measurements and the predictions of proposed elasto-plastic model. © 2018, Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature.
引用
收藏
页码：60 / 68
页数：8
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