Preliminary characterization of metal-packaged fiber Bragg gratings under fatigue loading

Grzegorz Fusiek, Tim Rubert, Pawel Niewczas, Jack McAlorum, Marcus Perry
2017 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)  
This paper presents preliminary results for metalpackaged fiber Bragg grating strain and temperature sensors designed specifically for structural health monitoring in civil engineering applications. The laboratory experiments show that the in-house manufactured metal-packaged sensors are sufficiently resilient, under dynamic loading, to successfully undergo a million cycle fatigue test without adverse deterioration in performance. In addition, from the thermal characterization of the devices, a
more » ... n of the devices, a conclusion can be drawn that the metalpackaged sensors offer superior performance over sensors assembled using epoxy bonding. These early results are very promising, inspiring confidence in the adopted methodologies, and giving the mandate to proceed with more detailed laboratory testing to evaluate reliability and lifetime of the transducers in the future work. Keywords-optical strain sensors, optical temperature sensors, fiber Bragg grating sensors, metallic encapsulation, fatigue loading. I.
doi:10.1109/i2mtc.2017.7969945 dblp:conf/i2mtc/FusiekRNMP17 fatcat:x6wm2df52zawtaemkfxaesrafq