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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">pimi</journal-id><journal-title-group><journal-title xml:lang="ru">Приборы и методы измерений</journal-title><trans-title-group xml:lang="en"><trans-title>Devices and Methods of Measurements</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-9506</issn><issn pub-type="epub">2414-0473</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2220-9506-2025-16-3-222-234</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-976</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>Методы измерений, контроля, диагностики</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Methods of measurements, monitoring, diagnostics</subject></subj-group></article-categories><title-group><article-title>Контроль механических характеристик чугуна методом микроударного индентирования</article-title><trans-title-group xml:lang="en"><trans-title>Control of Cast Iron Mechanical Properties Using Microimpact Indentation Method</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>Крень</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kren</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки:Крень А. П. - Институт прикладной физики Национальной академии наук Беларуси,ул. Академическая, 16,г. Минск 220072, Беларусь e-mail: alekspk@iaph.bas-net.by</p><p> </p><p> </p></bio><bio xml:lang="en"><p>Address for correspondence:Kren A.P. - Institute of Applied Physics of the National Academy of Scienceof Belarus,Akademicheskaya str., 16, Minsk 220072, Belarusalekspk@iaph.bas-net.by</p></bio><email xlink:type="simple">alekspk@iaph.bas-net.by</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>Ланцман</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lantsman</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Академическая, 16, г. Минск 220072</p></bio><bio xml:lang="en"><p>Akademicheskaya str., 16, Minsk 220072</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>Никифоров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikiforov</surname><given-names>А. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр-т Независимости, 4, г. Минск 220030</p></bio><bio xml:lang="en"><p>Nezavisimosty Ave., 4, Minsk 220030</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>Турсунов</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Tursunov</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Темирйулчилар, 1, г. Ташкент 100167</p></bio><bio xml:lang="en"><p>Temiryolchilar str., 1, Tashkent 100167</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>Уразбаев</surname><given-names>Т. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Urazbaev</surname><given-names>T. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул. Темирйулчилар, 1, г. Ташкент 100167</p></bio><bio xml:lang="en"><p>Temiryolchilar str., 1,Tashkent 100167</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт прикладной физики Национальной академии наук Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute of Applied Physics of the National Academy of Science of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Ташкентский государственный транспортный университет</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Tashkent State University of transport</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>10</month><year>2025</year></pub-date><volume>16</volume><issue>3</issue><fpage>222</fpage><lpage>234</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Крень А.П., Ланцман Г.А., Никифоров А.В., Турсунов Н.К., Уразбаев Т.Т., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Крень А.П., Ланцман Г.А., Никифоров А.В., Турсунов Н.К., Уразбаев Т.Т.</copyright-holder><copyright-holder xml:lang="en">Kren A.P., Lantsman G.A., Nikiforov А.V., Tursunov N.K., Urazbaev T.T.</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://pimi.bntu.by/jour/article/view/976">https://pimi.bntu.by/jour/article/view/976</self-uri><abstract><p>Инструментальное индентирование является одним из эффективных методов измерения физико-механических свойств различных материалов. В настоящей работе рассматриваются особенности контроля чугуна, имеющего различную форму графитовых включений: пластинчатую, шаровидную, вермикулярную и др., и модели, позволяющие на основании данных диаграммы микроударного нагружения материала рассчитать твёрдость по Бринеллю HBW, модуль упругости E и предел прочности σв чугунов различных марок. Показано, что использование в расчётах комплекса параметров позволяет устранить грубые ошибки при оценке HBW, вызванные влиянием графитовой структуры на значения модуля упругости и динамической твёрдости. На основании экспериментальных данных продемонстрировано, что измерение твёрдости чугуна с использованием значений коэффициента восстановления скорости приводит к погрешности измерения до 75 единиц, в связи с чем такой контроль с помощью стандартных динамических твердомеров является недостоверным. Также подтверждена устойчивая связь между пределом прочности и произведением твёрдости и модуля упругости. Показана возможность установления марки чугуна (серый или высокопрочный) по данным однократного измерения. Предложенная методика даёт возможность осуществить контроль непосредственно изделий на промышленных предприятиях, производящих чугунное литье. Проведенные исследования доказывают, что разработанные алгоритмы могут применяться для оперативной диагностики твёрдости чугуна с использованием динамических портативных твердомеров при их определённой модернизации.</p></abstract><trans-abstract xml:lang="en"><p>Instrumental indentation is one of the effective methods for measuring the physical and mechanical properties of various materials. This paper discusses the features of testing cast iron with various forms of graphite inclusions: flake-like structure, spherical, vermicular, etc., and models that allow, based on the data of the micro-impact loading diagram of the material, to calculate the Brinell hardness HBW, the elastic modulus E and the tensile strength σ of cast iron of various grades. It is shown that the use of a set of different parameters in the calculations allows eliminating gross errors in assessing HBW caused by the influence of the graphite structure on the values of the elastic modulus and dynamic hardness. Based on experimental data, it is demonstrated that measuring the hardness of cast iron using the values of the restitution coefficient leads to a measurement error of up to 75 units. In this connection, such testing using standard dynamic hardness testers is unreliable. A stable relationship between the tensile strength and the product of hardness and elastic modulus is also confirmed. The possibility of establishing the cast iron grade (grey or spheroidal graphite iron) based on a single measurement is shown. The proposed method makes it possible the nondestructive testing of parts at industrial enterprises producing iron castings. The carried out studies prove that the developed algorithms can be used for express diagnostics of cast iron hardness using dynamic portable hardness testers with their certain modernization.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>чугун</kwd><kwd>динамическое индентирование</kwd><kwd>твёрдость по Бринеллю</kwd><kwd>предел прочности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cast iron</kwd><kwd>dynamic indentation</kwd><kwd>Brinell hardness</kwd><kwd>tensile strength</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Белорусского республиканского фонда фундаментальных исследований. Конкурс БРФФИ– МИРРУ 2023. Проект Т23УЗБ-035 «Изучение процессов структурообразования и локального деформирования чугунов с целью создания их улучшенных марок, методик и средств неразрушающего контроля физико-механических характеристик».</funding-statement><funding-statement xml:lang="en">The work was done with the support of Belarusian Republican Foundation for Fundamental Research. Contest BRFFR-MIRRU 2023. Project Т23УЗБ-035 «Study of structure forming processes and local deformation of cast iron aiming at creating their improved grades, methods and tools of nondestructive testing of their physical and mechanical properties».</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Баев А. Р. [и др.] Возможности контроля структуры чугунных и стальных изделий по данным ультразвуковых измерений. 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