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23 May 2023 High temperature measurements using femtosecond written FBGs of a titanium substrate under intense heat flow
E. Deliancourt, A. . Lerner, K. Achour, A. Jolly, J.C. Le Pallec, A. Quet, C. Guérin, S. Hulin, G. Laffont
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Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432Q (2023) https://doi.org/10.1117/12.2678402
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium
Abstract
Pairs of arrays of point-by-point fiber Bragg Gratings written with a femtosecond laser were anchored with K-type thermocouple within an asymmetrical titanium substrate. Three anchoring methods were used, including silica based, graphite based glue commercially available as well as Yttria Stabilized Zirconia deposited by Atmospheric Plasma Spraying. The optical fibers were first recoated with an inorganic coating, specifically developed to resist to high temperatures above 800°C. The titanium plate was exposed to an intense heat flow delivered by tungsten halogen lamps to reach temperature of around 800°C. High temperature and strain measurements was performed in situ with a relative error of less than 10% at 800°C.
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E. Deliancourt, A. . Lerner, K. Achour, A. Jolly, J.C. Le Pallec, A. Quet, C. Guérin, S. Hulin, and G. Laffont "High temperature measurements using femtosecond written FBGs of a titanium substrate under intense heat flow", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432Q (23 May 2023); https://doi.org/10.1117/12.2678402
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KEYWORDS
Fiber Bragg gratings
Temperature metrology
Titanium
Coating
Femtosecond phenomena
Sensors
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