Research on the Relative Displacement Distribution of a Composite Plate with Built-In FBG Sensors
Kalizhanova A. Kozbakova A. Kunelbayev M. Kartbayev T. Kashaganova G.
May 2025Multidisciplinary Digital Publishing Institute (MDPI)
Journal of Composites Science
2025#9Issue 5
The paper studies the distribution of relative displacement of a composite plate with integrated fiber Bragg gratings. The analysis of the methods for manufacturing composite plates with embedded optical fibers containing FBG sensors, as well as the spectral characteristics of the gratings under various bending conditions, are performed. The effect of sensor arrangement on the accuracy of determining stresses and relative elongations of the material is experimentally studied. The features of spectral shifts that occur under non-uniform stresses are revealed, which can reduce the accuracy of measurements when using interrogators. The patterns of change in the central wavelength of Bragg gratings depending on the type and magnitude of plate bending are established. The research results confirm that the use of a network of embedded FBG sensors allows one to accurately determine the areas of maximum deformations, as well as the nature and magnitude of bending of composite structures. The data obtained can be used to develop more accurate systems for monitoring the stress–strain state of composite materials.
carbon fiber-reinforced polymer , centroid algorithm , composite plate , distribution of deformation , fiber optic Bragg sensor , optical fiber sensor , spectra
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Institute of Information, Computational Technologies CS MSHE RK, Almaty, 050010, Kazakhstan
Institute of Automation and Information Technologies, Almaty University of Energy and Communications Named After G. Daukeyev, Almaty, 050013, Kazakhstan
Faculty of Engineering and Information Technologies, Almaty Technological University, Almaty, 050010, Kazakhstan
Institute of Physical, Mathematical and Digital Technologies, Kazakh National Women’s Teacher Training University, Almaty, 050016, Kazakhstan
Faculty of Digital Technologies and Art, Turan University, Almaty, 050010, Kazakhstan
Institute of Automation and Information Technology, Satbayev University, Almaty, 050013, Kazakhstan
Institute of Information
Institute of Automation and Information Technologies
Faculty of Engineering and Information Technologies
Institute of Physical
Faculty of Digital Technologies and Art
Institute of Automation and Information Technology
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