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Thermal Monitoring of Electrical Switchboards Using a Silicone-Assisted Hetero-Core Optical Fiber Sensor

논문 기본 정보

저자정보
(Pukyong National University) (Samsung Electronics) (SOKA University) (SOKA University) (Pukyong National University)
저널정보
한국동력기계공학회 동력시스템공학회지 동력시스템공학회지 제30권 제3호
발행연도
수록면
38 - 46 (9page)
DOI
10.9726/kspse.2026.30.3.038
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Thermal Monitoring of Electrical Switchboards Using a Silicone-Assisted Hetero-Core Optical Fiber Sensor
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    초록·키워드

    This This study investigates the development of a hetero-core optical fiber temperature sensor for early fire detection in electrical switchboards. The proposed sensor utilizes the thermal expansion of silicone materials to generate optical loss variation induced by thermally produced strain. Silicone pads with identical length (50 mm) and width (10 mm), and thicknesses of 2 mm and 5 mm, were fabricated and tested. The hetero-core optical fiber was attached along the longitudinal direction of the specimen, and optical loss variation was converted into voltage signals using an optical amplifier. Experimental results demonstrated that temperature changes could be effectively detected through material expansion. However, nonlinear response and poor repeatability were observed due to the viscoelastic behavior of silicone and bonding interface effects. These results provide a basis for improving hetero-core optical fiber temperature sensors for switchboard fire monitoring applications.

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