Strain Monitoring of FRP Elements Using an Embedded Fibre Optic Sensor

Geert Luyckx; Eli Voet; Wim De Waele; Wim van Paepegem; Joris Degrieck; J. Vlekken

doi:10.4028/www.scientific.net/AST.56.435

Paper Titles

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Smart Nonlinear Acoustic Based Structural Health Monitoring System
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Strain Monitoring of FRP Elements Using an Embedded Fibre Optic Sensor
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High Strain Monitoring during Fatigue Loading of Thermoplastic Composites Using Imbedded Draw Tower Fibre Bragg Grating Sensors
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Self-Detection of Delamination in Active Fiber Composites
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Stochastic Vector Identification and Uncertain Modal Parameter Estimation for a Smart Composite Beam
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Optimization of Signal Pre-Processing for the Integration of Cost-Effective Local Intelligence in Wireless Self-Powered Structural Health Monitoring
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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 56Strain Monitoring of FRP Elements Using an...

Strain Monitoring of FRP Elements Using an Embedded Fibre Optic Sensor

Abstract:

This paper presents a strain monitoring approach for following up FRP elements (in this case a [90°] CFRP laminate) using an embedded fibre optic sensor. The sensor exists of two fibre Bragg gratings (FBGs) written in a polarization maintaining fibre (PMF). First, the strain response of the non-embedded sensor is determined which makes it possible to relate the different bragg peak shifts with the induced strain field in the core of the optical fibre. Secondly, a transfer coefficient matrix is presented and calculated using finite element simulations which relates the measured strain field of the sensor with the adjacent one existing in the structure as if no sensor would be present.