Study on Strain Transfer of Substrate Encapsulation FBG Strain Sensor

Li Sun; Bo Zhang; Chuang Li; Chuan Yun Yue

doi:10.4028/www.scientific.net/AMM.578-579.1037

Paper Titles

Research for Structural Damage Identification Method Based on Stable Time Series and Principal Component Analysis
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Research on Recognition Methods of Crack Damage from Beam Based on the Vibration Modal
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Structural Damage Detection Based on Ridge Estimation Method
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Study on Damage Identification of Simple Beam Bridge Based on the First-Order Curvature Mode Ratio
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Study on Strain Transfer of Substrate Encapsulation FBG Strain Sensor
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The Defect Diagnose Method of Piles with Lateral Excitation Based Wavelet Transform
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The Defect Diagnosing Method of Existing Bridges Based on Acceleration Responses
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Accuracy Enhancement of Videogrammetrey for Structural Dynamic Displacement Measurement with Adaptive Filtering
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Optimal Wavelet Basis Selection for Wavelet Denoising of Structural Vibration Signal
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 578-579Study on Strain Transfer of Substrate...

Study on Strain Transfer of Substrate Encapsulation FBG Strain Sensor

Abstract:

The FBG sensors of measuring stress and strain on the surface of concrete are mainly based on substrate encapsulation in engineering. Since the substrate encapsulation FBG sensor has a multilayer structure, there is certain consumption when the stress is transferred from the surface of concrete to optical fiber, which leads to difference between measured value and actual value. This paper analyzes the influencing factors of strain transfer rate by the method of theoretical calculation and finite element analysis. The formula of strain transfer is thereby obtained.