10.14489/td.2024.09.pp.024-035

2024, 09 September

DOI: 10.14489/td.2024.09.pp.024-035

Федотов М. Ю., Бабин С. А., Будадин О. Н., Козельская С. О.
ИССЛЕДОВАНИЕ ВОЗМОЖНОСТИ ДИАГНОСТИКИ НАПРЯЖЕНИЙ КОМПОЗИТНЫХ КОНСТРУКЦИЙ НА ОСНОВЕ ДАННЫХ КОНТРОЛЯ ДЕФОРМАЦИИ И АКУСТИЧЕСКОЙ ЭМИССИИ ИНТЕГРИРОВАННЫМИ ВОЛОКОННО-ОПТИЧЕСКИМИ ДАТЧИКАМИ
(с. 24-35)

Abstract. This article describes the results of theoretical researches and develops a mathematical model for continuous optical non-destructive testing of stresses arising in structures made of polymer composite materials under static loads in tension and compression, using embedded point fiber-optic strain sensors based on fiber Bragg gratings and acoustic emission based on Fabry−Perot interferometer. It is theoretically justified and experimentally confirmed that the proposed model, taking into account the accepted assumptions, establishes a functional connection between the intensity of energy release during loading of a composite structure and the effective values of deformations and stresses. Using the proposed mathematical model, methods have been developed for continuous optical testing of stresses and acoustic emission pulses arising in monolithic structural elements made of carbon fiber reinforced plastic, manufactured by autoclave molding, under static loading in tension and compression.

Keywords: continuous optical non-destructive testing, polymer composite material, point fiber-optic strain sensor, fiber Bragg grating, acoustic emission method, fiber-optic acoustic emission sensor, mathematical model of optical stress testing technique, tension, compression.

+ - About the Authors Click to collapse

M. Yu. Fedotov, S. A. Babin (Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences (IAiE SB RAS), Novosibirsk, 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.
O. N. Budadin, S. O. Kozelskaya (Central Research Institute of Special Engineering (JSC “TSNIISM”), 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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