10.14489/td.2024.01.pp.004-013

2024, 01 January

DOI: 10.14489/td.2024.01.pp.004-013

Fedotov M. Yu.
SIMULATION OF THERMAL COMPENSATION OF OPTICAL TESTING DATA OF COMPOSITE STRUCTURES BY AN EXTERNAL FIBER-OPTIC TEMPERATURE SENSOR
(pp. 4-13)

Abstract. This article describes the theoretical aspects of thermal compensation of data from optical non-destructive testing of deformation of structures made of polymer composite materials using fiber-optic sensors based on fiber Bragg gratings. It is shown that at the stage of bench testing of composite structures, the method of thermal compensation using an external temperature sensor can be successfully applied. Linear and quadratic mathematical models of thermal compensation are analyzed and generalized. It has been established that with the comparative simplicity of the implementation of this method of thermal compensation, the error in determining the deformation is also provided at the level of the error of the interrogator. However, for online testing of composite structures during operation, the use of this method is difficult, due to the fact that the placement of an external temperature sensor is not always possible. The proposed method and the corresponding models can be applied in practice to develop methods for optical testing of samples and structures made of polymer composite materials during bench and other tests, taking into account thermal compensation.

Keywords: polymer composite material, composite structure, optical non-destructive testing, fiber optic sensor, fiber Bragg grating, data temperature compensation, external temperature sensor method, temperature compensation model, optical testing error.

+ - About the Authors Click to collapse

M. Yu. Fedotov (Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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