Measurement of Material Deformation with Fiber Bragg Gratings (Summarization)
| Autor: | V. A. Reznikov, A. M. Shienok, D. V. Ioshin, V. V. Makhsidov |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Optical fiber General Chemical Engineering Acoustics System of measurement Metals and Alloys Physics::Optics 02 engineering and technology Deformation (meteorology) 01 natural sciences Thermal expansion law.invention 010309 optics Inorganic Chemistry Core (optical fiber) 020210 optoelectronics & photonics Fiber Bragg grating law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Materials Chemistry Fiber Refractive index |
| Zdroj: | Inorganic Materials. 53:1570-1577 |
| ISSN: | 1608-3172 0020-1685 |
| DOI: | 10.1134/s0020168517150092 |
| Popis: | Fiber sensing elements based on Bragg gratings (FBG) are a prospective basis of sensors for detecting deformations in measuring systems, in particular, for integrated control of various structures. The possibility of their application in the structure of polymer composite material for aerospace construction elements is examined. The FBG operating principle is based on change in the period of the grating—the periodic structure of the refractive index of an optical fiber core. Change in the period can cause either thermal expansion or compression of an optical fiber. Therefore, to solve integrated control problems, one has to understand the cause of optical fiber deformation in the area of location of FBG—with change in mechanical loading applied to it or thermal operating conditions. Proposed approaches to the allowance for temperature change when measuring deformation with FBG are systemized and the results of works in this field are presented. Possible implementations of each approach are described. Measurement accuracy of deformation and temperature is determined. The structural scheme of sensing elements is described. |
| Databáze: | OpenAIRE |
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