Analysis and Study of FBG Sensor in Crack Monitoring of Aircraft Structure

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Liang, Lei^1 ; Wang, Renliang^1 ; Xu, Gang^1^2 ; Yi, Zheng^1 ; Tu, Bin^3

National Engineering Laboratory of Fiber Sensing Technology, Wuhan University of Technology, Wuhan

430070, China^1

School of Mechanical Engineering, Hubei Engineering University, Xiaogan

432000, China^2

Wuhan University of Technology Advanced Engineering Technology, Research Institute of Zhongshan City, Zhongshan

528437, China^3

关键词: Aircraft structure;    Crack monitoring;    Fatigue cracks;    Fatigue theory;    FBG sensing;    Strain distributions;    Strain sensitivity;    Test points;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022111/pdf
DOI  :  10.1088/1755-1315/300/2/022111

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Based on the FBG sensing principle, the stress of each test point was measured by fatigue test with the change of tensile time using the strain sensitivity characteristics of FBG (fiber Bragg grating) sensor, and the experimental results were compared with the fatigue theory, FBG sensor can not only monitor the various stages of the crack growth, but also can effectively determine the time of occurrence of fatigue cracks and the top of the general location. This will provide a strong basis for the further application of FBG sensors in aircraft structural health monitoring.