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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">10.21122/2220-9506-2023-14-3-173-178</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-829</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>Средства измерений</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Measuring instruments</subject></subj-group></article-categories><title-group><article-title>Применение эталона температуропроводности для контроля параметра теплопереноса в поглощающих материалах</article-title><trans-title-group xml:lang="en"><trans-title>Application of the Thermal Diffusivity Standard for the Heat Transfer Parameter Control in Absorbing Materials</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>Ивакин</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivakin</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>пр. Независимости, 4, г. Минск 220030</p></bio><bio xml:lang="en"><p>Nezavisimosti Ave., 4, Minsk 220030, Belarus</p></bio><email xlink:type="simple">Ivakin41@tut.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><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><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>05</day><month>10</month><year>2023</year></pub-date><volume>14</volume><issue>3</issue><fpage>173</fpage><lpage>178</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ивакин Е.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ивакин Е.В.</copyright-holder><copyright-holder xml:lang="en">Ivakin E.V.</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/829">https://pimi.bntu.by/jour/article/view/829</self-uri><abstract><p>Создание, контроль и постоянное использование эталонов теплопереноса являются важнейшими факторами в развитии современного материаловедения. Это в особенности актуально в связи с появлением новых материалов с недостижимыми ранее теплофизическими параметрами. Целью работы являлась разработка и экспериментальное апробирование идеи совместного применения известного в нелинейной оптике метода динамических решёток и одного эталона температуропроводности стандартного типа для метрологического контроля параметров теплопереноса в материалах с широким диапазоном значений. Предложенный метод основан на использовании стандартного эталона температуропроводности как источника калиброванных оптических сигналов, возбуждаемых в нём короткими лазерными импульсами. Их длительность определяется коэффициентом температуропроводности эталона и периодом динамической решётки. Последний легко контролируется средствами современной оптики. Построенный с помощью эталона линейный график зависимости времени жизни множества динамических решёток от квадрата их периодов в сочетании с измеренным временем жизни решётки в исследуемом материале позволяют вычислить коэффициент температуропроводности. В приповерхностных слоях микронной толщины в трёх образцах – дюралюминий, монокристаллический кремний и термоэлектрик теллурид свинца – проведены измерения искомых параметров. Результаты тестирования близко соответствуют справочным значениям.</p></abstract><trans-abstract xml:lang="en"><p>Metrological support creation and use of heat transfer etalons are important stages in the development of modern materials science. This is especially concerned to the emergence of new materials in the world with previously unattainable thermophysical parameters. The purpose of this work was to develop and experimentally verify the idea of joint application of the transient gratings method which is well-known in nonlinear optics and the single thermal diffusivity etalon of conventional type for the heat transfer metrological control in materials of a wide values range. The method proposed is based on thermal diffusivity etalon application as a source of calibrated optical signals that are excited in it by short laser pulses. Their lifetime is formed by the etalon thermal diffusivity and on the transient grating spatial period. The etalon linear graph of gratings lifetimes as a function of the gratings periods squared and grating lifetime of the material under study are used for the thermal diffusivity calculation. Thermal diffusivity of thin sub-surface layers of the samples under study – duraluminium, monocrystalline silicon and thermoelectric lead telluride film was measured. The results obtained are in close agreement with the reference values.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>динамические решётки</kwd><kwd>эталон температуропроводности</kwd><kwd>метрологический контроль</kwd><kwd>поверхностный слой</kwd></kwd-group><kwd-group xml:lang="en"><kwd>transient gratings</kwd><kwd>etalon of thermal diffusivity</kwd><kwd>metrological control</kwd><kwd>sub-surface layers</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">GOST 8.140-82. GSI. State primary standard and state verification scheme for measuring the thermal conductivity of solids from 0.1 to 5 W/(m·K) in the temperature range of 90÷500 K and from 5 to 20 W/(m·K) – in the temperature range of 300÷1100 K.</mixed-citation><mixed-citation xml:lang="en">GOST 8.140-82. GSI. 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