Fiber-optic Bragg grating sensors for structural health monitoring at cryogenic temperatures

被引：16

作者：

Ecke, Wolfgang ^{[1
]}

Latka, Ines ^{[1
]}

Habisreuther, Tobias ^{[1
]}

Lingertat, Johann ^{[2
]}

机构：

[1] Inst Photon Technol IPHT, Albert Einstein Str 9, D-07745 Jena, Germany

[2] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany

来源：

SENSOR SYSTEMS AND NETWORKS: PHENOMENA, TECHNOLOGY, AND APPLICATIONS FOR NDE AND HEALTH MONITORING 2007 | 2007年 / 6530卷

关键词：

fiber Bragg grating sensor; strain sensor; temperature sensor; magnetic field sensor; structural health monitoring; cryogenic temperatures; superconductor; super-conductive magnets;

D O I：

10.1117/12.717755

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

While conventional resistance strain gages show increasing cross-sensitivities to temperature and magnetic field with decreasing temperature down to liquid helium, it has been found that fiber optic Bragg grating strain sensors show negligible then-no-optic and magneto-optic effects in cryogenic environment and allow, therefore, reliable strain measurements. These specific application advantages of optical fiber Bragg grating sensors at low temperatures, together with the electrical isolation and low electro-magnetic interference, low thermal conductivity to a large number of multiplexed sensors, make them attractive for structural health monitoring of super-conductive magnets, e.g., for super-conductive motors, magnetic levitation transport, nuclear fusion reactors, or for measurement of material parameters at low temperature, and - if using special sensor substrates - also for temperature measurements and hot spot detection on superconductors.

引用

页数：10

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