Search academic texts

Information × Registration Number 0226U000421, (0125U000324) , R & D reports Title Developments of optical means for defect diagnostics of the aircraft skin and turbines popup.stage_title Розроблення блок-схеми оптико-електронної системи та макетування окремих її вузлів. Head Voronyak Taras I., Доктор технічних наук Registration Date 09-01-2026 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description1 The goal of the project is to create new technical means and relevant methods for non-destructive testing of the aircraft skin and turbines during their manufacture and operation popup.description2 Object of research is the processes of interaction of hidden defects in materials with probing elastic waves and magnetic fields. Aim of the work is to create new technical means and relevant methods for non-destructive testing of aircraft skins and turbines during their manufacture and operation. The first stage of the work is the development of a flow chart of the optical-electronic system and the prototyping of its individual components. Major scientific results for 2025: 1. Spectral theory of open waveguide-resonator models of interphase impedance-type defects and open-ended sphere-conical resonators with small-sized communication openings was constructed for diagnosing layered structures in a harmonic load field and developing electromagnetic and acoustic waveguide-resonator sensors of diagnostic systems. 2. A new approach to estimate internal defects sizes in composite structures by irradiating them with an elastic wave, based on plate theory, was developed. Formulas for calculating the fundamental resonance frequencies and sizes of defects were derived. 3. A structure-adaptive method for detecting crack-like defects in magneto-optical imaging of details based on mathematical morphology was developed. A flow chart of optoelectronic system for diagnosing defects in aircraft skin and turbines was developed, consisting of optoacoustic (for diagnosing defects in aircraft skin made of layered composites); magneto-optical (for diagnosing defects in metal aircraft skin containing riveted joints and turbine defects); optical (for remote control of turbine blades shape and dimensions) parts. Mock-ups of the optical, acoustic, and magnetic components of this system were constructed, and preliminary documentation for their manufacture was developed. Product Description popup.authors Viktor O. Lysechko Teodor S. Mandzii Oleksii M. Sharabura Taras I. Voronyak Leonid I. Muravsky Roman A. Vorobel Yaroslav P. Kulynych Oleksandr P. Maksymenko Myron V. Voytko Olena R. Berehuliak Ihor V. Stasyshyn Oleksandr H. Kutsʹ Iryna B. Ivasenko Dozyslav В. Kuryliak popup.nrat_date 2026-01-09 Close