Transactions of Nanjing University of Aeronautics & Astronautics
Resistance Spot Welding Method for MetalBased Fiber Bragg Grating Sensors
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Abstract:
Aiming at the requirements of installation and work environment of metalbased fiber Bragg grating (FBG) sensor, a resistance spot welding method is presented. Firstly, the effect of welding parameters on welding quality is discussed theoretically, and a suitable resistance spot welding method for the metalbased FBG sensor is proposed for the first time. Then through serial resistance spot welding tests, the feasibility and practicability of the method are verified, and optimal welding parameters for two different tested metals are obtained. Fatigue performance test validates FBG sensors installed by the proposed method with good fatigue properties and longterm stable measurement performance. The research results can provide technical guidance for engineering structure longterm safety monitoring.
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