Analysis of the Side-Lobes of FBG Reflection Spectra from Matrix Cracks in Composites
Aydin Rajabzadeh (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Richard Heusdens (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Richard Hendriks (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Roger Groves (TU Delft - Aerospace Engineering)
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Abstract
The previously described approximated transfer matrix model (ATMM) provides insight into the strain distribution along on fibre Bragg grating (FBG) sensor. In this paper we study the influence of matrix cracks in composites on the angular frequency of the side-lobes of the FBG reflection spectra in frequency space.