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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">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2023-66-10-852-868</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-192</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>ПРИБОРЫ И МЕТОДЫ КОНТРОЛЯ И ДИАГНОСТИКИ МАТЕРИАЛОВ, ИЗДЕЛИЙ, ВЕЩЕСТВ И ПРИРОДНОЙ СРЕДЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODS AND INSTRUMENTS FOR ANALYSIS AND MONITORING OF THE NATURAL ENVIRONMENT, SUBSTANCES, MATERIALS AND PRODUCTS</subject></subj-group></article-categories><title-group><article-title>Методы фильтрации сигналов акустической эмиссии при контроле дефектообразования в процессе прямого лазерного выращивания изделий</article-title><trans-title-group xml:lang="en"><trans-title>Methods for filtering acoustic emission signals when monitoring defect formation in the process of direct laser growth of products</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>Алтай</surname><given-names>Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Altay</surname><given-names>Ye.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ельдос Алтай - канд. техн. наук; департамент государственной научно-технической экспертизы; главный менеджер</p><p>Алматы</p></bio><bio xml:lang="en"><p>Yeldos Altay - PhD; Chief Manager</p><p>Almaty</p></bio><email xlink:type="simple">aeldos@inbox.ru</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>Кузиванов</surname><given-names>Д. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzivanov</surname><given-names>D. О.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Олегович Кузиванов - аспирант; факультет систем управления и робототехники</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Dmitry O. Kuzivanov - Post-Graduate Student; Faculty of Control Systems and Robotics</p><p>St. Petersburg</p></bio><email xlink:type="simple">kuzivanovdmitry@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рождественский</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rozhdestvensky</surname><given-names>D. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Данила Александрович Рождественский - отделение аддитивных технологий; специалист технологического отдела аддитивных технологий</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Danila A. Rozhdestvensky - Department of Additive Technologies; Specialist of the Department</p><p>St. Petersburg</p></bio><email xlink:type="simple">DanRo@alpost.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Санников</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Sannikov</surname><given-names>М. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Максим Игоревич Санников - отделение аддитивных технологий; инженер технологического отдела аддитивных технологий</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Maksim I. Sannikov - Department of Additive Technologies; Engineer of the Department</p><p>St. Petersburg</p></bio><email xlink:type="simple">sannmaks96@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Степанова</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Stepanova</surname><given-names>К. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ксения Андреевна Степанова - канд. техн. наук; ведущий научный сотрудник</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Ksenia A. Stepanova - PhD</p><p>St. Petersburg</p></bio><email xlink:type="simple">ledy.xs93@yandex.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный центр государственной научно-технической экспертизы</institution></aff><aff xml:lang="en"><institution>1National Center of Science and Technology Evaluation</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>НЦМУ „Передовые цифровые технологии“ СПбГМТУ</institution></aff><aff xml:lang="en"><institution>ITMO University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НЦМУ „Передовые цифровые технологии“ СПбГМТУ</institution></aff><aff xml:lang="en"><institution>World-class Scientific Center of Advanced Digital Technologies SMTU</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Научно-технический центр „Эталон“</institution></aff><aff xml:lang="en"><institution>Scientific and Technical Center Etalon</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>11</month><year>2024</year></pub-date><volume>66</volume><issue>10</issue><fpage>852</fpage><lpage>868</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/192">https://pribor.ifmo.ru/jour/article/view/192</self-uri><abstract><p>Представлены результаты акустико-эмиссионного контроля дефектообразования в изделиях при прямом лазерном выращивании. Рассмотрены особенности применения метода акустической эмиссии и обработки результатов регистрации сигналов акустической эмиссии с использованием каскадной полиномиальной цифровой фильтрации. Приведены результаты экспериментальной апробации метода каскадной фильтрации для обнаружения таких дефектов внутренней структуры, как трещины и поры. Выделены фрагменты амплитудно-временных и частотно-временных диаграмм сигналов акустической эмиссии, зарегистрированных при развитии дефектов в процессе выращивания изделий. Выполнена оценка зависимости сигналов акустической эмиссии от параметров дефектообразования. Установлена взаимосвязь между параметрами сигналов акустической эмиссии и мощностью излучения лазера (характеризует процесс дефектообразования), а также содержани ем азота в порошке жаропрочного сплава.</p></abstract><trans-abstract xml:lang="en"><p>Results of acoustic emission monitoring of defect formation in products during direct laser growth are presented. The features of applying the acoustic emission method and results of processing recorded acoustic emission signals with the use of cascade polynomial digital filtering are considered. Results of experimental testing of the cascade filtration method for detecting internal structure defects such as cracks and pores are presented. Fragments of amplitude- time and frequency-time diagrams of acoustic emission signals recorded during the development of defects in the process of growing products are isolated. An assessment is made of the dependence of acoustic emission signals on defect formation parameters. A relationship between the acoustic emission signals parameters and applied laser radiation power is established, which characterizes the process of defect formation, as well as the nitrogen content in the heat-resistant alloy powder.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>акустическая эмиссия</kwd><kwd>контроль дефектообразования</kwd><kwd>аддитивное производство</kwd><kwd>прямое лазерное выращивание</kwd><kwd>фильтрация</kwd><kwd>мощность лазера</kwd><kwd>металлография</kwd><kwd>хром-никелевый сплав</kwd><kwd>сигнал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>acoustic emission</kwd><kwd>defect formation testing</kwd><kwd>additive manufacturing</kwd><kwd>direct laser growth</kwd><kwd>filtering</kwd><kwd>laser power</kwd><kwd>metallography</kwd><kwd>chromium-nickel alloy</kwd><kwd>signal</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования выполнены при финансовой поддержке Минобрнауки России в рамках реализации программы Научного центра мирового уровня по направлению „Передовые цифровые технологии“ СПбГМТУ (соглашение от 20.04.2022 № 075-15-2022-312).</funding-statement><funding-statement xml:lang="en">The research was carried out with the financial support of the Russian Ministry of Education and Science as part of the implementation of the program of the world-class Scientific Center in the direction of “Advanced Digital Technologies” of St. Petersburg State Marine Technical University (agreement dated April 20, 2022, No. 075-15- 2022-312).</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">Ivanov A. 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