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- Article name
- Theoretical aspects of calibrating and estimating errors of fiber-optic diagnostics system of polymer composites
- Authors
- FEDOTOV M. Yu., , fedonovmyu@gmail.com, Institute of Automation and Electrometry of SB of RAS; Russian Academy of Engineering, Novosibirsk, Russia; Moscow, Russia
- Keywords
- polymer composite / embedded testing / fiber-optic sensor / fiber Bragg grating / two-fiber method / optical testing model / sensitivity coefficient / calibration / testing data error
- Year
- 2023 Issue 2 Pages 43 - 51
- Code EDN
- BTKMRH
- Code DOI
- 10.52190/2073-2562_2023_2_43
- Abstract
- Theoretical and methodological features are considered of the calibration of a fiber-optic system for the embedded testing of polymer composites by integrated fiber-optic sensors based on fiber Bragg gratings. It has been established that in order to increase the reliability of optical testing data, it is advisable to use a quadratic model of optical testing. It is shown that the calibration process is an integral part of the development of a system of embedded diagnostics of polymer composites and consists in the experimental determination of the values of the sensitivity coefficients to deformation and temperature, taking into account optical testing models. The main methods for estimating the errors in the testing of polymer composites by integrated fiber-optic sensors through the errors of the sensitivity coefficients, the calibration error, for a nonlinear system of equations are described. It has been established that the application of the considered methods and their adaptation to specific polymer composites and structures will make it possible in the future to create an effective system for the simultaneous diagnosis of deformation and temperature.
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