10.14489/td.2025.10.pp.066-072

2025, 10 October

DOI: 10.14489/td.2025.10.pp.066-072

Fedotov M. Yu., Vasiliev S. A.
SOME ASPECTS OF MONITORING AXIAL AND RADIAL STRESSES OF COMPOSITE STRUCTURES USING FIBER-OPTIC SENSORS (REVIEW)
(pp. 66-72)

Abstract. This article describes the relevance of using fiber-optic sensors based on Bragg gratings for continuous monitoring of stresses in the axial and transverse directions. The current state of domestic and foreign developments in the field under consideration is shown, the most appropriate solutions are proposed to ensure the reliability of continuous optical monitoring. Analysis of information from open sources showed that one of the promising methods for ensuring simultaneous stress monitoring in two orthogonal directions is the use of two successive closely spaced Bragg gratings with different wavelengths, one of which is in the capillary. In this case, it is necessary to minimize the effect of such capillaries on the structure and properties of the composite by using fiber optic light guides with a diameter of eighty microns or less, and to apply protective coatings compatible with polymer matrices of specific polymer composite materials.

Keywords: polymer composite material, composite structure, continuous optical non-destructive testing, fiber optic sensor, fiber Bragg grating, axial and radial stresses, capillary.

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M. Yu. Fedotov (Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences (IAiE SB RAS), Novosibirsk, Russia, Russian Academy of Engineering, Moscow, Russia)
S. A. Vasiliev (Prokhorov General Physics Institute of the Russian Academy of Sciences, Dianov Fiber Optics Research Center, Moscow, Russia)

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DOI: 10.14489/td.2025.10.pp.066-072

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