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Information × Registration Number 0221U107194, (0120U100781) , R & D reports Title Development of opto-acoustic method of control and diagnostics of layered composites popup.stage_title Експериментальна апробація оптико-акустичної технології контролю та діагностики шаруватих композитів і створення експериментального макету установки для її реалізації Head Voronyak Taras I., Доктор технічних наук Registration Date 29-12-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description1 Development of opto-acoustic method of control and diagnostics of layered composites popup.description2  Research object – is the processes of layered composite materials surface deformation by irradiation with acoustic waves of different polarization. The goal of the work – development of optical-acoustic technology for layered composites non-destructive testing and diagnosis by methods and means of speckle-metrology to establish relationships between subsurface (hidden) defects (stratifications, non-adhesives, cracks, wrinkling) geometric parameters, acoustic wave parameters (type, frequency, amplitude, duration) and local deformations caused by it. During the project fulfilment, an optical-acoustic system breadboard model for composite structural elements non-destructive testing will be created and the proposed technology experimental testing will be carried out. Second stage – experimental approbation of optical-acoustic technology for layered composites control and diagnostics and experimental breadboard model creation for its realization. New mathematical models for the propagation of an elastic wave in a flat layer with an interphase defect at the boundary of its rigid connection with the half-space and its scattering on internal defects (inhomogeneities) and the impact on the material surface have been developed. In particular, a mathematical model that describes adequately the diffraction interaction between existing defects in the material and with its surface. A new optical-acoustic method for detection, localization and identification of internal defects in layered composites and a corresponding system for its implementation are proposed. Preliminary documentation for the production and such optical-acoustic system breadboard model have been developed. The results of experimental approbation optical-acoustic system model for detection and identification of internal defects in structural elements made of fiberglass and layered carbon fibres of various thicknesses, in particular, areas of defective adhesive connection (non-adhesives) between layers, cracks, Product Description popup.authors Ivanytskyi Yaroslav L. Voitko Myron V. Voroniak Taras I. Kulynych Yaroslav P. Kuryliak Dozyslav B. Kuts Oleksandr H. Maksymenko Oleksandr P. Muravsky Leonid I. Nazarchuk Zinovii T. Stasyshyn Ihor V. Suriadova Olha D. popup.nrat_date 2022-03-09 Close