Effect of wind on temperature and moisture content of material samples during climatic tests

Laptev A.B., Sadkov V.R., Nikolaev E.V., Zeleneva T.O.
Laptev A.B., Sadkov V.R., Nikolaev E.V., Zeleneva T.O. Effect of wind on temperature and moisture content of material samples during climatic tests // Proceedings of VIAM. 2025. No. 2. DOI: 10.18577/2307-6046-2025-0-2-112-120. URL: https://test.viam.ru/en/journal/2025/2/9
Keywords
wind, humidity, moisture saturation of polymers, climatic factors, free moisture, sorbed moisture, polymer aging
Abstract

Based on the known thermodynamic dependencies, formulas for calculating changes in the surface temperature of a sample and the evaporation time of free moisture from its surface under the influence of wind are derived. Calculations allow, using meteorological data, to estimate the actual value of the sample temperature and the time until complete removal of free moisture from the surface at low air humidity or, conversely, the humidification time at high humidity during climatic tests of materials. The use of the derived dependencies will allow us to take into account the influence of liquid precipitation and wind when predicting the climatic resistance of materials.

Reference list
  1. Kablov E.N., Laptev A.B., Prokopenko A.N., Gulyaev A.I. Relaxation of polymeric composite materials under the prolonged action of static load and climate (review). Part 1. Binders. Aviation materials and technologies, 2021, no. 4 (65), paper no. 08. Available at: http://www.journal.viam.ru (accessed: May 10, 2024). DOI: 10.18577-2713-0193-2021-0-4-70-80.
  2. Kablov E.N., Startsev V.O., Laptev A.B. Aging of polymer composite materials: textbook. Moscow: NRC «Kurchatov Institute» – VIAM, 2023, 520 p.
  3. Kablov E.N. New generation materials and digital technologies for their processing. Vestnik Rossiyskoy akademii nauk, 2020, vol. 90, no. 4, pp. 331–334.
  4. Kablov E.N., Kondrashov S.V., Melnikov A.A., Schur P.A. Application of functional and adaptive materials obtained by 3D printing (review). Trudy VIAM, 2022, no. 2 (108), paper no. 03. Available at: http://www.viam-works.ru (accessed: November 20, 2023). DOI: 10.18577/2307-6046-2022-0-2-32-51.
  5. Laptev A.B., Pavlov M.R., Novikov A.A., Slavin A.V. Current trends in the development of testing materials for resistance to climate factors (review). Part 1. Testing of new materials. Trudy VIAM, 2021, no. 1 (95), paper no. 12. Available at: http://www.viam-works.ru (accessed: November 20, 2023). DOI: 10.18577/2307-6046-2021-0-1-114-122.
  6. Whiteside M., Herndon J.M. Unequivocal Detection of Solar Ultraviolet Radiation 250-300 nm (UV-C) at Earth's Surface. European Journal of Applied Sciences, 2023, vol. 11, no. 2, pp. 455–472. DOI: 10.14738/aivp.112.14429.
  7. Myagkov M.S. Climate analysis in architectural design: textbook. Moscow: MARChI, 2016, 118 р.
  8. Startsev V.O., Nechaev A.A. The influence of natural and accelerated weathering on the nanomodified CFRP’S strength. Aviation materials and technologies, 2023, no. 3 (72), paper no. 11. Available at: http://www.journal.viam.ru (accessed: May 10, 2024). DOI: 10.18577/2713-0193-2023-0-3-134-151.
  9. Babich V.F., Bryk M.T., Veselovsky R.A. et al. Physicochemistry of multicomponent polymer systems: in 2 vols. Ed. Yu.S. Lipatov. Kyiv: Naukova Dumka, 1986, vol. 2: Polymer mixtures and alloys, 376 p.
  10. Lebedev E.V., Lipatov Yu.S., Rosovitsky V.F. et al. Physicochemistry of multicomponent polymer systems: in 2 vols. Ed. Yu.S. Lipatov. Kyiv: Naukova Dumka, 1986, vol. 1: Filled polymers, 384 p.
  11. Bertenev G.M., Frenkel S.Ya. Physics of polymers. Ed. A.M. Elyashevich. Leningrad: Khimiya, 1990, 432 p.
  12. Enthalpy. The Great Russian Encyclopedia: in 35 vol. Moscow: The Great Russian Encyclopedia, 2017, vol. 35, p. 348.
  13. Landau L.D., Lifshits E.M. Statistical Physics: in 4 parts. 5th ed. Moscow: Fizmatlit, 2002, part 1, 616 p.
  14. Gorshkov V.I., Kuznetsov I.A. Fundamentals of Physical Chemistry. 3rd ed. Moscow: Binom. Laboratoriya Znaniy, 2009, 408 p.
  15. Steadman R.G. Norms of apparent temperature in Australia. Meteorological Magazine, 1994, vol. 43, pp. 1–16.
  16. Lakomkin V.Yu., Smorodin S.N., Gromova E.N. Heat and mass transfer equipment of enterprises (drying units): textbook. St. Petesburg: VShTE SPbGUPTD, 2016, 142 p.
  17. Laptev A.G., Dremicheva E.S., Safina G.G. Calculation of the process of evaporative cooling of water in open circulation cycles: practical course. Kazan: Kazan State Power Engineering Univ., 2018, 28 p.
  18. Gunich S.V., Yanchukovskaya E.V. Mathematical modeling and computer calculation of chemical-engineering processes: examples and problems: in 2 vols. Irkutsk: Irkutsk State Tech. Univ., 2010, vol. 1, 215 p.
  19. Dytnersky Yu.I. Processes and apparatuses of chemical engineering: textbook for universities: in 2 parts. Moscow: Khimiya, 1995, рart 2: Mass transfer processes and apparatuses, 635 p.
  20. Methodology for calculating water management balances of water bodies. Available at: https://sudact.ru/law/prikaz-mpr-rf-ot-30112007-n-314/metodika-rascheta-vodokhoziaistvennykh-balansov-vodnykh/?ysclid=lw4sxyifv7662570439 (accessed: May 13, 2024).
  21. Physical quantities: handbook. Ed. I.S. Grigorieva, E.Z. Meilikhova. M.: Energoatomizdat, 1991, 450 p.
  22. Polosin I.I., Novoseltsev B.P., Shershnev V.N. Theoretical foundations of creating a microclimate in a room. Voronezh, 2005, 143 p.
  23. Construction climatology: Building codes and regulations 23-01–99: approved by the Ministry of Construction and Housing Communal Services of the Rus. Federation. 24.12.2020: comes into effect from 25.06.2021. Moscow: Standartinform, 2021, 146 p.
  24. Gennes P.G., Wyart F.B., Quéré D. Capillarity and Wetting Phenomena: Drops, Bubbles, Pearls, Waves. Physics Today, 2004, no. 57, pp. 12–66. DOI: 10.1063/1.1878340.