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- 2013 (2)
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- Englisch (2)
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- Durability (1)
- Fibre Bragg grating (1)
- Fibre-optic sensor (1)
- Four-parametric (1)
- Harsh impacts (1)
- Offshore application (1)
- Patch (1)
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- Sensor characteristics (1)
- Strain (1)
This work presents a further development of the methods of simultaneous determination of temperature and axial strain using a single fibre Bragg grating (FBG). The reflected spectrum of composite-embedded FBG sensors has been analyzed in order to separate temperature and load effects. We found out that during the curing process of the laminates, a superstructure has been introduced on the FBG. Analyzing this effect, a temperature and strain separation was implemented by simply calculating and comparing the integrated intensity of the spectral response signal. A mathematical four-parametric model has been developed to calculate the reflected spectrum of a superstructured fibre Bragg grating. The mathematically achieved data has been evaluated with experimentally determined data from fibre Bragg gratings embedded in glass-fibre reinforced composite materials.