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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">10.21122/2220-9506-2021-12-4-301-310</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-735</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>Влияние геометрии и граничных условий в области сцепления материалов на рассеяние ультразвуковых волн. Ч. 2. Особенности экспериментального моделирования</article-title><trans-title-group xml:lang="en"><trans-title>Influence of Geometry and Boundary Conditions in Area of the Cohesion between Materials on the Reflection of an Ultrasonic Beam. Part 2. Features of Experimental Simulation</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>Баев</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Baev</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки: Баев А.Р. - Ин-т прикладной физики Национальной академии наук Беларуси, ул. Академическая, 16, г. Минск 220072 e-mail: baev@iaph.bas-net.by</p></bio><bio xml:lang="en"><p>Address for correspondence: - Baev A.R. – Institute of Applied Physics of the National Academy of Science of Belarus, Akademicheskaya str., 16, Minsk 220072, Belarus e-mail: baev@iaph.bas-net.by</p></bio><email xlink:type="simple">baev@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>Левкович</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Levkovitch</surname><given-names>N. 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>Nezavisimosti Ave., 4, Minsk 220030, Belarus</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>Асадчая</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Asadchaya</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>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>Майоров</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Mayorov</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>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>Размыслович</surname><given-names>Г. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Razmyslovich</surname><given-names>G. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>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-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурнос</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Burnos</surname><given-names>A. Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>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-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 Univercity</institution><country>Belarus</country></aff></aff-alternatives><aff xml:lang="ru" id="aff-3"><institution>Институт прикладной физики Национальной академии наук Беларуси</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>22</day><month>12</month><year>2021</year></pub-date><volume>12</volume><issue>4</issue><fpage>301</fpage><lpage>310</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Баев А.Р., Левкович Н.В., Асадчая М.В., Майоров А.Л., Размыслович Г.И., Бурнос А.Ю., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Баев А.Р., Левкович Н.В., Асадчая М.В., Майоров А.Л., Размыслович Г.И., Бурнос А.Ю.</copyright-holder><copyright-holder xml:lang="en">Baev A.R., Levkovitch N.V., Asadchaya M.V., Mayorov A.L., Razmyslovich G.I., Burnos A.Y.</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/735">https://pimi.bntu.by/jour/article/view/735</self-uri><abstract><p>Повышение эффективности акустической диагностики объектов со слоистой структурой применительно к выявлению слабо выявляемых дефектов сцепления материалов является важной производственной задачей. Цель работы состояла в экспериментальном моделировании рассеяния ультразвуковых волн на образцах предложенных конструкций имитаторов дефектов с дискретно и плавно изменяющимися граничными условиями, коррелирующими с фазовой характеристикой продольных волн в процессе их взаимодействия с дефектной границей контактирующих материалов.</p><p>Проведён краткий анализ некоторых методов и средств экспериментального моделирования рассеяния объёмных и поверхностных волн на границах контактирующих материалов применительно к совершенствованию метода обнаружения слабо выявляемых дефектов сцепления (адгезии) материалов. Для этого разработана и изготовлена иммерсионная установка, работающая в теневом режиме и позволяющая моделировать пространственные поля рассеянных продольных волн на неоднородной или дефектной границе сцепления материалов. Как предполагается, взаимодействующие с такой границей волны приобретают дискретный или плавно изменяющийся фазовый сдвиг, существенно сказывающийся на формировании поля рассеяния в его периферийной зоне. Увеличение же этого сдвига позволяет значительно повысить чувствительность обнаружения слабо выявляемых дефектов.</p><p>Проведено экспериментальное исследование рассеяния продольных волн на разработанной установке и имитаторах дефектов, моделирующих дискретно и плавно изменяющиеся граничные условия, которые согласуются с изменением фазового сдвига рассеиваемых волн. Получены амплитудные зависимости поля рассеяния в зависимости от угла их приема в диапазоне от 20º до + 20º и смещения центра моделируемого дефекта относительно оси зондирующего акустического луча. Как установлено, наблюдается качественное соответствие между расчётными и опытными данными.</p><p>Настоящие исследования представляют интерес для решения ряда задач по повышению эффективности ультразвукового контроля современных объектов со слоистой структурой и будут способствовать расширению возможностей использования предложенного метода.</p></abstract><trans-abstract xml:lang="en"><p>Improving the efficiency of diagnostics of objects with layered structure as applied to detection of poorly detectable material bonding defects is an important production task. The aim of the work was to experimentally simulate ultrasonic scattering by samples of proposed defect simulator designs with discretely and smoothly varying boundary conditions correlating with the phase response of longitudinal waves during their interaction with the defect boundary of contacting materials.</p><p>A brief analysis of some methods and means for experimental simulation of the volume and surface wave scattering at the interfaces of contacting materials as applied to improvement of method of detection of poorly detectable adhesion defects of materials proposed earlier was carried out. For this purpose an immersion installation working in the shadow mode and allowing for simulation the spatial fields of scattered longitudinal waves at inhomogeneous or defective adhesion boundaries was developed and constructed. It is assumed that the waves interacting with such a boundary acquire a discrete or smoothly varying phase shift which significantly affects the formation of the scattering field in its peripheral zone. The greater this shift, the stronger these changes are, which can significantly increase the sensitivity of detection of poorly detected defects.</p><p>In order to increase the efficiency of such inspection and to develop its methodology a new principle of simulation of such defects has been proposed.</p><p>Experimental study of longitudinal waves scattering using the developed installation and defect simulators, simulating discretely and smoothly changing boundary conditions which are consistent with a change in the phase shift of the scattered waves is carried out. The amplitude dependences of the scattering field vs. the receiving angle received mainly in the range from - 20º to + 20º and the displacement of the simulated defect relative to the axis of the probing acoustic beam were obtained.</p><p>As it has been established, there is a quality conformity between the calculated and experimental data. The present study is of interest for solving a number of tasks of increasing efficiency of ultrasonic testing of modern objects with layered structure and will contribute to practical application.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ультразвуковые волны</kwd><kwd>рассеяние ультразвука</kwd><kwd>неоднородные граничные условия</kwd><kwd>имитатор дефекта</kwd><kwd>фазовый сдвиг</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ultrasonic wave scattering</kwd><kwd>non-uniform boundary conditions</kwd><kwd>defect simulator</kwd><kwd>phase shift</kwd><kwd>acoustic load</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">Nondestructive Testing: Handbook: In 7 vols. Ed. V.V. Klyuev. Moscow: Mashinostroenie Publ., 2003, vol. 3, 864 p.</mixed-citation><mixed-citation xml:lang="en">Nondestructive Testing: Handbook: In 7 vols. Ed. V.V. Klyuev. 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