Influence of thermal coupling on the temperature compensation of fiber optic strain sensors-Reference-Cited by-同舟云学术

Influence of thermal coupling on the temperature compensation of fiber optic strain sensors

Published:2023-01-24 Issue:0 Volume:0 Page:
ISSN:0171-8096
Container-title:tm - Technisches Messen
language:en
Short-container-title:

Author:

Gönner Alexander¹,Kempkes Philipp²,Fendel Ansgar²,Faulstich Martin¹

Affiliation:

1. Technische Universität Dortmund, Fakultät für Raumplanung , Dortmund , Deutschland

2. REMONDIS SmartRec GmbH , Lünen , Germany

Abstract

Abstract Fiber Bragg Grating (FBG) thermometers are commonly used for temperature compensation of FBG strain sensors. It is shown theoretically and experimentally that the thermal coupling between the underlying substrate and the respective sensors causes a delayed response to temperature changes. This can be explained by the heat capacity of the underlying substrate causing a temperature gradient between the surrounding and the substrate. In this contribution, we apply our theoretical result to achieve an improved accuracy in the strain measurement by an approximate factor of up to 3.5. In addition, experiments are carried out in which the thermal coupling in the system is adjusted by using thermal conduction paste. The results also show significantly improved temperature compensation.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Instrumentation

Link

https://www.degruyter.com/document/doi/10.1515/teme-2022-0111/pdf

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