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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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18384/2949-5067-2023-3-43-56</article-id><article-id custom-type="elpub" pub-id-type="custom">phmath-591</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Физический механизм селективного лазерного воздействия короткоимпульсного лазерного излучения на микропоры в непрозрачном материале</article-title><trans-title-group xml:lang="en"><trans-title>Physical mechanism of selective exposure of short-pulse laser radiation on micropores in opaque material</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0124-8668</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ушаков</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ushakov</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иван Владимирович Ушаков, доктор технических наук, профессор</p><p>кафедра физики</p><p>19049</p><p>Ленинский пр-т, д. 4, стр. 1</p><p>Москва</p></bio><bio xml:lang="en"><p>Ivan V. Ushakov, Dr. Sci. (Engineering), Prof.</p><p>Department of Physics</p><p>119049</p><p>Leninskiy Prospekt 4 build. 1</p><p>Moscow</p></bio><email xlink:type="simple">ushakoviv@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7144-4376</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сафронов</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Safronov</surname><given-names>I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иван Сергеевич Сафронов, кандидат физико-математических наук, доцент</p><p>кафедра физики</p><p>19049</p><p>Ленинский пр-т, д. 4, стр. 1</p><p>Москва</p></bio><bio xml:lang="en"><p>Ivan S. Safronov, PhD (Phys.-Math.), Assoc. Prof.</p><p>Department of Physics</p><p>119049</p><p>Leninskiy Prospekt 4 build. 1</p><p>Moscow</p></bio><email xlink:type="simple">Issafronov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет науки и технологий МИСИС</institution><country>Россия</country></aff><aff xml:lang="en"><institution>University of Science and Technology MISIS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>13</day><month>11</month><year>2023</year></pub-date><volume>0</volume><issue>3</issue><fpage>43</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ушаков И.В., Сафронов И.С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ушаков И.В., Сафронов И.С.</copyright-holder><copyright-holder xml:lang="en">Ushakov I., Safronov I.</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.physmathmgou.ru/jour/article/view/591">https://www.physmathmgou.ru/jour/article/view/591</self-uri><abstract><sec><title>   Цель</title><p>   Цель. Исследование физического механизма селективного воздействия лазерного излучения на систему микропор в поверхностном слое непрозрачного материала с высокой теплопроводностью.</p></sec><sec><title>   Процедура и методы</title><p>   Процедура и методы. Теоретическое исследование специфики прогрева поверхности материала с системой микропор, с использованием нелинейного дифференциального уравнения теплопроводности методом конечных элементов.</p></sec><sec><title>   Результаты</title><p>   Результаты. Предложен физический механизм селективного воздействия короткоимпульсного лазерного излучения на микропоры в непрозрачном материале. Установлено, что в условиях импульсного прогрева материала специфика распространения изотерм существенно зависит от конфигурации системы микропор. Для верхней микропоры реализуется ускоренный прогрев материала над микропорой и запаздывание прогрева под микропорой. Специфическая картина прогрева материала, дополненная воздействием ударной волны, будет стимулировать движение материала в направлении микропоры и её частичное/полное залечивание.</p><p>   Теоретическая и/или практическая значимость. Полученные результаты расширяют представления о физике селективного лазерного залечивания микропор.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Aim</title><p>   Aim. Investigation of the physical mechanism of the selective effect of laser radiation on the micropore system in the surface layer of an opaque material with high thermal conductivity.</p></sec><sec><title>   Methodology</title><p>   Methodology. Theoretical study of the specifics of heating the surface for a material with a system of micropores using a nonlinear differential equation of thermal conductivity by the finite element method.</p></sec><sec><title>   Results</title><p>   Results. A physical mechanism for the selective effect of short-pulse laser radiation on micropores in an opaque material is proposed. It is established that under conditions of impulsed laser heating of the material, the specificity of the propagation of isotherms significantly depends on the configuration of the micropore system. For the upper micropore is realized speeded heating of the material above the micropore and slowed heating under the micropore. The specific heating pattern of the material, supplemented by the impact of the shock wave, will stimulate the movement of the material in the direction of the micropore and its partial/complete healing.</p></sec><sec><title>   Research implications</title><p>   Research implications. The results obtained expand the understanding of the physics of selective laser healing of micropores.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>физика селективного лазерного воздействия</kwd><kwd>микропоры</kwd><kwd>твёрдые материалы</kwd><kwd>физика конденсированного состояния</kwd><kwd>физический механизм залечивания</kwd></kwd-group><kwd-group xml:lang="en"><kwd>physics of selective laser affecting</kwd><kwd>micropores</kwd><kwd>solid materials</kwd><kwd>physics of condensed matter</kwd><kwd>physical mechanism of healing</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">Gorbunov A. 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