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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zldm-291</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>МЕХАНИКА МАТЕРИАЛОВ: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL TESTING METHODS</subject></subj-group></article-categories><title-group><article-title>РАЗВИТИЕ ПОВЕРХНОСТНЫХ ТРЕЩИН В ПОЛЫХ ЦИЛИНДРИЧЕСКИХ ОБРАЗЦАХ ПРИ КОМБИНИРОВАННОМ ЦИКЛИЧЕСКОМ НАГРУЖЕНИИ</article-title><trans-title-group xml:lang="en"><trans-title></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>Шлянников</surname><given-names>В. Н.</given-names></name></name-alternatives><email xlink:type="simple">shlyannikov@mail.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>Яруллин</surname><given-names>Р. Р.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Иштыряков</surname><given-names>И. С.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Казанский научный центр РАН</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>01</day><month>08</month><year>2016</year></pub-date><volume>82</volume><issue>8</issue><fpage>47</fpage><lpage>54</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шлянников В.Н., Яруллин Р.Р., Иштыряков И.С., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Шлянников В.Н., Яруллин Р.Р., Иштыряков И.С.</copyright-holder><copyright-holder xml:lang="en">Шлянников В.Н., Яруллин Р.Р., Иштыряков И.С.</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.zldm.ru/jour/article/view/291">https://www.zldm.ru/jour/article/view/291</self-uri><abstract><p>Проведено расчетно-экспериментальное исследование скорости развития поверхностных трещин при комбинированном циклическом нагружении. Объекты исследований - алюминиевые полые цилиндрические образцы с наружными несквозными полуэллиптическими поверхностными трещинами под действием растяжения, кручения и их комбинации. Приращения длины и глубины трещины измеряли с помощью оптического инструментального микроскопа и датчика раскрытия берегов трещины (COD). Для рассматриваемых конфигураций поверхностных трещин численно определены упругие и пластические параметры состояния в форме In-интеграла и пластического коэффициента интенсивности напряжений (КИН) как функций соотношения полуосей, безразмерной длины и глубины трещины. Установлены эффекты влияния вида нагружения и ориентации исходного поверхностного дефекта на развитие трещин для двух типов алюминиевых сплавов. Интерпретация скорости роста усталостных трещин представлена в терминах упругих и пластических КИН. Показаны преимущества использования пластического КИН в силу его чувствительности к комбинированному нагружению вследствие учета пластических свойств материала.</p></abstract><kwd-group xml:lang="ru"><kwd>поверхностная трещина</kwd><kwd>растяжение</kwd><kwd>кручение</kwd><kwd>скорость роста трещины</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">Newman J. C., Raju I. S. An empirical stress-intensity factor equation for the surface crack / Eng. Fract. Mech. 1981. Vol. 15. N1-2. P. 185 - 192.</mixed-citation><mixed-citation xml:lang="en">Newman J. C., Raju I. S. An empirical stress-intensity factor equation for the surface crack / Eng. Fract. Mech. 1981. Vol. 15. N1-2. P. 185 - 192.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Carpinteri A., Brighenti R. 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