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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">sat</journal-id><journal-title-group><journal-title xml:lang="ru">НАУКА и ТЕХНИКА</journal-title><trans-title-group xml:lang="en"><trans-title>Science &amp; Technique</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-1031</issn><issn pub-type="epub">2414-0392</issn><publisher><publisher-name>Belarusian National Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2227-1031-2022-21-2-107-113</article-id><article-id custom-type="elpub" pub-id-type="custom">sat-2531</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>МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Исследование прочностных характеристик изделий, полученных методом 3D-печати из PLA</article-title><trans-title-group xml:lang="en"><trans-title>Study of Strength Characteristics of Products Produced  by 3D-Printing from PLA</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>Ермакова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermakova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистрант</p><p>г. Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Гасперович</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gasperovich</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистрант</p><p>г. Минск</p></bio><bio xml:lang="en"><p>Minsk</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>Ермаков</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ermakov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент</p><p>Адрес для переписки:Ермаков Алексей Игоревич –Белорусский национальный технический университет,пр-т Независимости, 67,220013, г. Минск, Республика Беларусь.Тел.: +375 17 293-95-05ermakov@bntu.by</p></bio><bio xml:lang="en"><p>Address for correspondence:Ermakov Aleksey I. –Belаrusian National Technical University,67, Nezavisimosty Ave.,220013, Minsk, Republic of Belarus.Tel.: +375 17 293-95-05ermakov@bntu.by</p></bio><email xlink:type="simple">ermakov@bntu.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>Литвяк</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Litvyak</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, доцент</p><p>Московская область</p></bio><bio xml:lang="en"><p>Moscow Region</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт крахмала и крахмалсодержащего сырья – филиал  Федерального    исследовательского центра картофеля имени А. Г. Лорха</institution><country>Россия</country></aff><aff xml:lang="en"><institution>All-Russian Research Institute of Starch and Starch-Containing Raw Materials Processing –    Branch of Russian Potato Research Centre</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>04</month><year>2022</year></pub-date><volume>21</volume><issue>2</issue><fpage>107</fpage><lpage>113</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ермакова В.А., Гасперович Е.В., Ермаков А.И., Литвяк В.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ермакова В.А., Гасперович Е.В., Ермаков А.И., Литвяк В.В.</copyright-holder><copyright-holder xml:lang="en">Ermakova V.A., Gasperovich E.V., Ermakov A.I., Litvyak V.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://sat.bntu.by/jour/article/view/2531">https://sat.bntu.by/jour/article/view/2531</self-uri><abstract><p>В современном машиностроении, наряду со снижением металлоемкости конструкций, главной задачей  является повышение надежности и долговечности деталей, узлов механизмов. Эта проблема никогда не утрачивает своей актуальности в связи с постоянно возрастающими требованиями к изготовлению изделий, с необходимостью экономии дефицитных дорогостоящих металлов и сплавов и, как следствие, замены их на экономически более выгодные варианты. Один из самых перспективных, с точки зрения экологии, способов замены металлов – использование в конструкциях узлов пластиков, в частности полимолочной кислоты (PLA). PLA – это биоразлагаемый термопластик, применяемый в 3D-печати. В статье представлены результаты экспериментального исследования на разрыв образцов, полученных методом 3D-печати из PLA при различных технологических режимах работы 3D-принтера.  В качестве варьируемых параметров были выбраны: форма заполнения образцов (треугольник, шестигранник (соты), линия, ребро), температура сопла (190–205 °С), коэффициент заполнения образца (от 10 до 40 %). Испытания образцов на разрыв проводили на гидравлической разрывной машине с измерительным программным комплексом в комплекте Kason WDW-5. При выполнении испытаний основным выходным показателем считали условный предел текучести. Анализ экспериментальных данных показал существенное влияние изучаемых технологических параметров на условный предел текучести, который изменялся от 16,50 до 22,42 МПа. В процессе исследований определены наиболее рациональные формы и коэффициент заполнения образцов, а также температура сопла при печати PLA.</p></abstract><trans-abstract xml:lang="en"><p>In modern mechanical engineering, along with reducing the metal consumption of structures, the main task is  to increase the reliability and durability of parts, assemblies of mechanisms. This problem never loses its relevance due </p><p>to the ever-increasing requirements for manufacture of products, with the need to save scarce expensive metals and alloys and,  as a result, replace them with economically more profitable options. One of the most promising, from the point of view of ecology, ways to replace metals, is to use in the construction of plastic assemblies, in particular polylactic acid (PLA). PLA is a biodegradable thermoplastic used in 3D-printing. The paper presents results of an experimental study on the rupture of samples obtained by 3D-printing from PLA under various technological operating modes of 3D-printer. The following parameters have  been chosen as variable parameters: the form of filling samples (triangle, hexagon (honeycomb), line, edge), nozzle temperature (190–205 °С), sample filling factor (from 10 up to 40 %). Tensile testing of the samples have been carried out on a hydraulic tensile machine with a measuring software package in the Kason WDW-5 set. When performing tests, the conditional yield strength was considered the main out put indicator. The analysis of experimental data has shown a significant effect of the investigated technological parameters on the conventional yield point, which varied from 16.5 to  22.42 MPa. The most rational forms and sample filling factor, as well as the temperature of nozzle when printing with PLA, have been determined.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>3D-печать</kwd><kwd>PLA</kwd><kwd>технологические режимы</kwd><kwd>механические характеристики</kwd><kwd>условный предел текучести</kwd><kwd>форма заполнения</kwd><kwd>коэффициент заполнения</kwd><kwd>температура печати</kwd></kwd-group><kwd-group xml:lang="en"><kwd>3D-printing</kwd><kwd>PLA</kwd><kwd>technological modes</kwd><kwd>mechanical characteristics</kwd><kwd>conditional yield stress</kwd><kwd>filling form</kwd><kwd>filling factor</kwd><kwd>printing temperature</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">Зленко, М. А. Аддитивные технологии в машиностроении / М. А. Зленко, А. А. Попович, И. Н. Мутылина. 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