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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2021-87-10-40-43</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1506</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>STRUCTURE AND PROPERTIES INVESTIGATION</subject></subj-group></article-categories><title-group><article-title>Определение давления внутри пор</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the pressure inside pores</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алымов</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Alymov</surname><given-names>М. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Иванович Алымов</p><p>142432, Московская обл., г. Черноголовка, ул. Академика Осипьяна, д. 8</p></bio><bio xml:lang="en"><p>Mikhail I. Alymov</p><p>8, ul. Akademika Osipyana, Chernogolovka, Moskovskaya obl., 142432</p></bio><email xlink:type="simple">alymov.mi@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аверин</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Averin</surname><given-names>S. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Иванович Аверин</p><p>119334, Москва, Ленинский пр., д. 49</p></bio><bio xml:lang="en"><p>Sergey I. Averin</p><p>49, Leninsky prosp., Moscow, 119334</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозов</surname><given-names>Е. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozov</surname><given-names>E. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Михайлович Морозов</p><p>115409, Москва, Каширское ш., д. 31</p></bio><bio xml:lang="en"><p>Evgeny M. Morozov</p><p>31, Kashirskoe sh., Moscow, 115409</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сайков</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Saikov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иван Владимирович Сайков</p><p>142432, Московская обл., г. Черноголовка, ул. Академика Осипьяна, д. 8</p></bio><bio xml:lang="en"><p>Ivan V. Saikov</p><p>8, ul. Akademika Osipyana, Chernogolovka, Moskovskaya obl., 142432</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Галиев</surname><given-names>Ф. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Galiev</surname><given-names>F. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фанис Фанилович Галиев</p><p>142432, Московская обл., г. Черноголовка, ул. Академика Осипьяна, д. 8</p></bio><bio xml:lang="en"><p>Fanis F. Galiev</p><p>8, ul. Akademika Osipyana, Chernogolovka, Moskovskaya obl., 142432</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт структурной макрокинетики и проблем материаловедения имени А. Г. Мержанова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A. G. Merzhanov Institute of structural macrokinetics and materials science, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт металлургии и материаловедения имени А. А. Байкова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A. A. Baikov Institute of Metallurgy and materials science, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет «МИФИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National research nuclear university MEPHI</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>10</month><year>2021</year></pub-date><volume>87</volume><issue>10</issue><fpage>40</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алымов М.И., Аверин С.И., Морозов Е.М., Сайков И.В., Галиев Ф.Ф., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Алымов М.И., Аверин С.И., Морозов Е.М., Сайков И.В., Галиев Ф.Ф.</copyright-holder><copyright-holder xml:lang="en">Alymov М.I., Averin S.I., Morozov E.M., Saikov I.V., Galiev F.F.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.zldm.ru/jour/article/view/1506">https://www.zldm.ru/jour/article/view/1506</self-uri><abstract><p>Определение пористости, структурных характеристик пор и давления газа в закрытых порах — важнейшая часть оценки физико-механических свойств материалов. По давлению внутри поры можно судить о степени прочностной надежности пористого объема изделия. Кроме того, данные о давлении позволят оптимизировать технологические процессы изготовления изделий, управлять их структурой и свойствами, избегать образования трещин на границах частиц, составляющих материал. В работе представлен метод расчета внутреннего давления в сферический поре, возникшей в материале изделия, изготовленном порошковой металлургией или аддитивными технологиями. Предложенный способ измерения внутреннего давления в поре основан на приложении к изделию внешнего давления, измерении перемещений точек поверхности поры и вычислении давления по разности смещений. При этом использованы известные решения задачи теории упругости о деформации сферической полости, расположенной в центре сферического полого шара. Полученные результаты могут быть использованы для оценки свойств и структуры изделий, полученных аддитивной технологией и порошковой металлургией, а также для совершенствования технологии их изготовления.</p></abstract><trans-abstract xml:lang="en"><p>Determination of the porosity, structural characteristics of pores, and gas pressure in closed pores is the most important part of assessing physical and mechanical properties of materials. The internal pressure inside the pore can be used in estimating the level of strength reliability of the porous volume of the product to optimize the technological processes of product manufacturing, control their structure and properties, and avoid the formation of cracks at the boundaries of the particles consisting the material. We present a method for calculating the internal pressure in a spherical pore that has arisen in the material of a product obtained using powder metallurgy or additive technologies. The proposed procedure for measuring internal pressure in a pore consists in application of an external pressure to the product, measurements of the displacements of the points on the pore surface, and calculation of the internal pressure from the difference between the displacements. In this case, the known solutions of the problem of the theory of elasticity regarding the deformation of a spherical cavity located in the center of a spherical hollow ball are used. The results obtained can be used to assess the properties and structure of the products obtained by additive technology and methods of powder metallurgy, as well as to improve the technology of their manufacture.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>давление в поре</kwd><kwd>теория упругости</kwd><kwd>пористый материал</kwd><kwd>порошковая металлургия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gas pressure inside the pore</kwd><kwd>theory of elasticity</kwd><kwd>porous material</kwd><kwd>powder metallurgy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Jibowu T. A Review on Nanoporous Metals / Frontiers in Nanoscience and Nanotechnology. 2016. Vol. 2(4). P. 165 – 168. DOI: 10.15761/FNN.1000129</mixed-citation><mixed-citation xml:lang="en">Jibowu T. A Review on Nanoporous Metals / Frontiers in Nanoscience and Nanotechnology. 2016. Vol. 2(4). 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