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Information × Registration Number 0225U002064, (0122U001189) , R & D reports Title Creation of scientific bases, technologies and equipment for high-speed welding of polymeric materials popup.stage_title Створення наукових базисів, технологій та обладнання для швидкісного зварювання полімерних матеріалів Head Maksym V. Yurzhenko, Доктор технічних наук Registration Date 18-02-2025 Organization E. O. Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description1 The purpose of the work is a complex study of the impact of external source energy on polymeric materials during high-speed welding, establishing the dependence of adsorbed energy on thermophysical properties of polymeric materials and intensity of its transformation, development of highly productive welding technologies on this basis. popup.description2 The purpose of the work is to conduct comprehensive studies of the influence of external energy on polymer materials during high-speed welding, to establish the dependence of the level of adsorbed energy on the thermophysical properties of polymer materials and the intensity of its transformation, and to develop on this basis technologies for welding polymer materials with increased productivity. The finite element method was used to conduct mathematical modeling of thermal processes during welding. The mechanical strength and elongation at failure of welds were studied in uniaxial tension on a Shimadzu AGS-10kNX testing machine in accordance with DSTU EN 12814–2:2018 and ASTM D1002–10 (2019). Macro- and microstructural studies of sections of welded joints were carried out using optical microscopy methods on a Versamet-2 microscope in accordance with DSTU EN 12814-5:2018. X-ray structural analysis of polymeric materials and their welded joints was performed by the method of wide-angle radiography on a Shimadzu XRD-7000 diffractometer according to the Bragg–Brentano X-ray optical scheme for the reflection of the primary beam by the studied sample using CuK-radiation ( = 1.54 Å) in the range of scattering angles (2) from 3.0 to 40.0 degrees. Experiments were performed on ultrasonic welding of various polymeric materials. It was shown that welding in “hard” modes of ultrasonic vibrations allows for the production of joints at increased speed while maintaining their high quality. Experimental work on high-frequency welding of polymer fabrics laminated with PVC was carried out. The possibility of welding complex products of large area was shown. An experimental method of welding polymers was developed and investigated, which consists in forming a welded joint by initiating an electric explosion of a embedded element in the joint zone. The effectiveness of using different types of embedded elements was tested, Product Description popup.authors Buinova Yevheniia O. Halchun Anatolii M. Holianda Oksana I. Demchenko Valerii L. Karpova Svitlana V. Klymenko Viktor V. Kovalchuk Maksym O. Kolisnyk Roman V. Kondratenko Volodymyr Yu Korab Mykola H. Korniienko Olena Yu. Lytvyn Anastasiia Ye. Liakhovets Oleksandr A. Misiura Andrii I. Mamunia Yevhen P. Maruzhenko Oleksii V. Mariakhina Tetiana V. Masiuchok Olha P. Menzheres Maryna H. Pidlisnyi Andrii R. Parshutina Liudmyla S. Senchenkov Ihor K. Sytnyk Illia O. Skok Oleksandr H. Talaniuk Viktoriia V. Chukashkin Oleksandr M. Shadrin Andrii O. Yurzhenko Maksym V. popup.nrat_date 2025-02-18 Close