광섬유 센서를 이용한 구조물의 열변형 및 온도 측정 Thermal Strain and Temperature Measurements of Structures by Using Fiber-Optic Sensors

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Two types of fiber-optic sensors, EFPI(extrinsic Fabry-Perot interferometer) and FBG(fiber Bragg grating), have been investigated for measurement of thermal strain and temperature. The EFPI sensor is only for measurement of thermal strain and the FBG sensor is for simultaneous measurement of thermal strain and temperature. FBG temperature sensor was developed to measure strain-independent temperature. This sensor configuration consists of a single-fiber Bragg grating and capillary tube which makes it isolated from external strain. This sensor can then be used to compensate for the temperature cross sensitivity of a FBG strain sensor. These sensors are demonstrated by embedding them into a graphite/epoxy composite plate and by attaching them on aluminum rod and unsymmetric graphitelepoxy composite plate. All the tests were conducted in a thermal chamber with the temperature range . Results of strain measurements by fiber-optic sensors are compared with that from conventional resistive foil gauge attached on the surface.
Publisher
한국복합재료학회
Issue Date
2000-04-14
Language
KOR
Citation

한국복합재료학회 2000년도 춘계학술발표대회, pp.184 - 189

URI
http://hdl.handle.net/10203/10457
Appears in Collection
AE-Conference Papers(학술회의논문)
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광섬유 센서를 이용한 구조물의 열변형 및 온도 측정.pdf(258.3 kB)Download

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