Accuracy Improvement of Residual Stress Measurement by Chirp Compensation of FBG

被引：4

作者：

Xu, Yao ^{[1
,2
]}

Duan, Chao ^{[3
]}

Li, Zhuoshu ^{[3
]}

Tan, Tao ^{[3
]}

Qiu, Chengjun ^{[3
]}

Xiao, Gui ^{[3
]}

Tian, Ye ^{[3
]}

Zhang, Weibin ^{[1
]}

Zhang, Jianzhong ^{[3
]}

机构：

[1] China Acad Engn Phys, Inst Chem Mat, Mianyang 621999, Sichuan, Peoples R China

[2] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

[3] Harbin Engn Univ, Minist Educ, Key Lab In Fiber Integrated Opt, Harbin 150001, Heilongjiang, Peoples R China

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2021年 / 70卷

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

Chirp effect compensation; fiber Bragg grating (FBG); hole-drilling method; nonuniform strain distribution; residual stress measurement; SENSORS;

D O I：

10.1109/TIM.2020.3041101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A chirp compensation method of fiber Bragg grating (FBG) is proposed to improve the residual stress measurement accuracy in the hole-drilling method. The effects of the radii of the hole, the distance between the FBG and the hole, the Young's modulus of the material, and the residual stress on the FBG chirped spectra are analyzed. The relationship between radii of the hole, the distance between the FBG and the hole, the full-width at half maximum (FWHM), and the peak wavelength are established. The feasibility of the method is verified through experiments, which shows that the residual stress measurement error can be reduced by the compensation method.

引用

页数：7

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