10.14489/td.2019.04.pp.012-019

2019, 04 April

DOI: 10.14489/td.2019.04.pp.012-019

Fedotov M. Yu., Budadin O. N., Kozelskaya S. O.
MATHEMATICAL MODELING AND EXPERIMENTAL RESULTS OF CONTROL OF PCM BY FIBER-OPTIC SENSORS TAKING INTO ACCOUNT THE INFLUENCE OF FACTORS SIMULATING REAL OPERATING CONDITIONS
(pp. 12-19)

Abstract. This article describes linear and quadratic mathematical models of the process of non-destructive testing (NDT) of polymer composite materials (PCM) and structures based by optical method using embedded fiber-optic sensors (FOS) based on fiber Bragg gratings (FBG). The mathematical model describes the relationship between the original data recorded by the FOS (resonant wavelength) and the final characteristics (deformation and temperature). It has been experimentally confirmed that the sensitivity coefficients of FOS for deformation may differ from the standard values characteristic of quartz fibers, which is associated with the influence on the effective refractive index of the technological molding modes PCM, various reinforcement schemes, as well as the human factor in the manual display of FOS at the integration stage. These factors can be minimized by applying a FOS calibration using classical strain gauges. It is shown that the refinement of the parameters of the mathematical model by experimentally determining the coefficient of sensitivity to deformation during the calibration process makes it possible to reduce the systematic error of strain measurements by 5–7 times.

Keywords: mathematical modeling, non-destructive testing, fiber optic sensor, polymeric composite material, strain, temperature.

+ - About the Authors Click to collapse

M. Yu. Fedotov (LIRA soft, LLC, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
O. N. Budadin, S. O. Kozelskaya (Central Research Institute for Special Machinery, Joint Stock Company, Khotkovo, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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