.Development of a fiber optic health monitoring system for aerospace applications[J].Optoelectronics Letters,2007,3(4):260-263 |
Development of a fiber optic health monitoring system for aerospace applications |
V.Striano V.Latini G.Coppola LRendina |
[1]DIMET,Universitgt“Mediterranea”diReggioCalabria,ReggioCalabria,Italy. [2]CNR.IMMseLNapoli.ViaPietroCastellin0111,80131Napoli,Italy. [3]CarloGavazziSpace,ViaTiengosnc,82100Benevento,Italy. |
Abstract: |
This paper describes our research activity involved in the identification, development and test of a prototype SHM system constituted by optical sensing nodes to measure both temperature and strain on ultra high temperature ceramics (UHTC) materials up to 1000 ℃. Commercially available optic devices can operate up to 550 ℃. To raise temperature limit up to 1000 ℃, custom devices, mainly under development for scientific applications, have been identified. A prototype SHM system has been developed adopting a FBG sensor for temperature measurement and an EFPI sensor in sapphire fiber for strain measurement. The preliminary findings from thermo-mechanical tests indicate that former SHM system is capable of accurately measuring strain at elevated temperatures on UHTC materials. |
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