10.14489/td.2026.11.pp.025-032

2026, 11 November

DOI: 10.14489/td.2026.11.pp.025-032

Evdokimov А. А., Ogleznev A. A., Sozonov N. S., Fedotov M. Yu.
APPLICATION OF FIBER-OPTIC STRAIN GAUGES FOR NON-DESTRUCTIVE TESTING THE ELASTIC AND STRENGTH PROPERTIES OF POLYMER COMPOSITE MATERIALS
(pp. 25-32)

Abstract. This paper describes the use of various strain gauges to mechanical testing of specimens made of various polymer composite materials. The basic principles and methods for performing strain gauge measurements are described. The results of experimental researches on monitoring the elastic modulus of specimens obtained from medium-modulus carbon fiber with unidirectional and equal-strength reinforcement schemes are presented. These researches were conducted using an extensometer, an electrical strain gauge, and a fiber-optic strain gauge based on a fiber Bragg grating. It is demonstrated that fiber-optic strain gauges offer a viable alternative to traditional strain gauges. They enable the determination of numerical values of the mechanical properties of polymer composite specimens and, in the future, can be successfully applied as a system for continuous non-destructive optical testing of composite structures, including in challenging operating conditions.

Keywords: strain gauge, polymer composite material, elastic modulus, deformation, fiber optic sensor, fiber Bragg grating.

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А. А. Evdokimov (Russian Engineering Academy, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
A. A. Ogleznev, N. S. Sozonov (LLC “Inversion Sensor”, Perm, 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.
M. Yu. Fedotov (Russian Engineering Academy, Moscow, Russia, Kazan National Research Technical University named after A. N. Tupolev – KAI, Kazan, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
D. S. Dorofeev (Kazan National Research Technical University named after A. N. Tupolev – KAI, Kazan, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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