Pavel N. Rudovsky
Kostroma State University, Kostroma
Sergey V. Palochkin
Bauman Moscow State Technical University
Svetlana G. Smirnova
Kostroma State University, Kostroma
Tatyana L. Fefelova
Kamyshin Technological Institute (branch of Volgograd State Technical University)
Rudovsky P. N., Palochkin S. V., Smirnova S. G., Fefelova T. L. Justification of the step of wrapping the thread with a microwire to avoid its breaking when the complex thread is stretched. Technologies & Quality. 2023. No 4(62). P. 5–9. (In Russ.) https: doi 10.34216/2587-6147-2023-4-62-5-9.
DOI: 10.34216/2587-6147-2023-4-62-5-9
УДК: 677.054.847.82
Publish date: 2023-11-22
Annotation: It has been established that the broken ends of the microwire included in the fabric for protection against electromagnetic radiation cause irritation on the skin and do not allow the fabric to be used for clothing. A theoretical analysis of the behaviour of the upholstery component when stretching a filament thread is carried out for two limiting cases. The first – the rod component is absolutely flexible, the second – the rod component is absolutely rigid. The values of the critical angle of the wrapping, at which the relative deformations of the rod component and the wrapping are equal, are obtained. At wrapping angles greater than the critical value, the wrapping component will break later than the rod component. Those, in fabric made from yarn with a wrap laid at an angle greater than the critical one, microwire rupture will not occur. This will prevent the broken ends of the microwire from reaching the surface of the fabric and the associated defects. The value of the wrapping pitch for practical use lies in the range between those calculated for the two specified limiting cases and must be determined experimentally.
Keywords: complex thread, core component, wrapping component, wrapping angle, wrapping deformation, component deformation, expansion
Literature list: 1. Grishchenkova V. A., Vladimirov D. N., Fukina V. A., Khandogina E. N., Shapovalova E. I. Fabric for protection against electromagnetic radiation. Pat. RU 2411315, D03D 15/00, B82B 1/0 Published: 02/10/2011 Bulletin No. 4 (In Russ.) 2. Fukina O. V., Kheylo S. V. Development of thread for the electromagnetic radiation protection fabrics. Izvestiya vysshih uchebnyh zavedenij. Seriya Teknologiya Tekstil’noi Promyshlennosti [Proceedings of Higher Educational Institutions. Series Textile Industry Technology]. 2019;53:75–79. (In Russ.) 3. Fefelova T. L., Trifonova L. B., Sokova G. G., Boyko S. Yu. Analysis of textile materials used for protec-tion against electromagnetic radiation. Tekhnologii i kachestvo [Technologies and Quality]. 2022;3(57):30–33. (In Russ.) 4. Boyko S. Yu., Fefelova T. L., Trifonova L. B., Sokova G. G., Rudovsky P. N. Combined filaments with a ferromagnetic rod, their structure and prospects for use. Tekhnologii i kachestvo [Technologies and Quality]. 2023;2(60):30–35. (In Russ.) 5. Kukin G. N., Solov’ev A. N. Textile materials science. Part 2. Moscow, Legkaya industriya Publ., 1964. 380 p. (In Russ.) 6. Palochkin S. V. Technology of formation and processing of untwisted wrapped linen roving. Мoscow, Kosygin Rus. St. Univ. Publ., 2002. 212 p. (In Russ.)
Author's info: Pavel N. Rudovsky, Kostroma State University, Kostroma, pavel_rudovsky@mail.ru, https://orcid.org/0000-0002-8675-2910
Co-author's info: Sergey V. Palochkin, Bauman Moscow State Technical University, Moscow, palnigs@mail.ru, https://orcid.org/0009-0005-6192-0243
Co-author's info: Svetlana G. Smirnova, Kostroma State University, Kostroma, SW_Smirnova@mail.ru, https://orcid.org/0000-0003-0029-497X
Co-author's info: Tatyana L. Fefelova, Kamyshin Technological Institute (branch of Volgograd State Technical University), Kamyshin. fefelova@kti.ru, https://orcid.org/0000-0002-3466-0010