Application of optical fiber strain sensing technology in structural deformation measurement
|更新时间:2026-07-28
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Application of optical fiber strain sensing technology in structural deformation measurement
Advances in Aeronautical Science and EngineeringPages: 1-9(2026)
作者机构:
1.航空工业空气动力研究院 气动研究与试验二部, 沈阳 110034
2.沈阳市飞行器非定常气动力及流固耦合气动力重点实验室, 沈阳 110034
作者简介:
基金信息:
DOI:
CLC:V211.74
Received:11 March 2026,
Revised:2026-07-04,
Online First:28 July 2026,
稿件说明:
移动端阅览
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陈金池,刘南,黄研昕,等. 光纤应变传感技术在结构变形测量中的应用[J]. 航空工程进展.DOI:
CHEN Jinchi,LIU Nan,HUANG Yanxin, et al. Application of optical fiber strain sensing technology in structural deformation measurement[J]. Advances in Aeronautical Science and Engineering.(in Chinese)DOI:
Application of optical fiber strain sensing technology in structural deformation measurement
Structural deformation measurement is a critical component in wind tunnel tests concerning static aeroelasticity, flutter, and gust load alleviation. In recent years, high-precision optical methods like laser displacement measurement and Digital Image Correlation (DIC) have been widely used as reference benchmarks in structural deformation measurement. However, these optical methods face limitations in complex environments characterized by flow field interference, field-of-view occlusion, or the need for real-time feedback. To overcome these constraints, this paper proposes a real-time structural deformation prediction method based on fiber optic strain data. The method obtains strain-displacement sample data through static loading tests, and establishes a data-driven mapping for deformation prediction. Ground tests and gust wind tunnel tests were carried out to verify the prediction accuracy for both static deformation and transient vibrations. The results demonstrate that the method achieves a prediction error of 0.01 mm for static deformation, while keeping the transient response error below 0.5% of the response amplitude. The proposed method is applicable to both wind tunnel and flight tests, providing an effective measurement approach for the aeroelastic response analysis of flexible structures, such as high-aspect-ratio wings.
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Hu Handon1,Yan Qide1,Zhu Minhon1,Den Xueyin2(1.Chinese Aerodynamics Research and Deveopment Center,Mianyan 621000,China)(2.Beijin University of Aeronautic and Astronautic,Beijin ,)