Monitoring of silicone adhesive in space solar cells with an embedded multi-parameter TFBG sensor in a simulated space environment
نویسندگان
چکیده
Abstract In this research the ageing of a silicone adhesive in simulated space environment is monitored through an embedded three parameter tilted fibre Bragg grating (TFBG) sensor. Here, used as between two thin cover glasses, and environmental by thermal cycles high vacuum conditions (better than 10 ?5 mbar). These operational can induce variations with respect to its original properties such dimensional stability, chemical composition, generated contaminants, discoloration and, mechanical or optical degradation. Therefore, surrounded adhesive, centre glass sandwich, weakly FBG sensor was placed obtain information from spectra on state polymer during test. Specifically, temperature, strain refractive index (RI) be, simultaneously separately, measured spectrum single TFBG selected resonance peaks. parameters be evaluate ‘health’ cycles. The simultaneous thermomechanical measurements gave solution non-localized measuring issues when using classical optic electrical strain-gauges thermocouple compensate temperature better understand material behaviour. trends are reported entire testing time, at end test, negative ?100 ?? positive RI variation ?0.002.
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ژورنال
عنوان ژورنال: Measurement Science and Technology
سال: 2022
ISSN: ['0957-0233', '1361-6501']
DOI: https://doi.org/10.1088/1361-6501/ac6d45