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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-264</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>Влияние малоцикловой усталости на параметры механики разрушения по данным метода спекл-интерферометрии</article-title><trans-title-group xml:lang="en"><trans-title>Study of the Effect of Low Cycle Fatigue on the Parameters of Fracture Mechanics Using Speckle Interferometry</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>Писарев</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Pisarev</surname><given-names>V. S.</given-names></name></name-alternatives><email xlink:type="simple">VSP5335@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>Матвиенко</surname><given-names>Ю. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Matvienko</surname><given-names>Yu. G.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</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>Елеонский</surname><given-names>С. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Eleonskii</surname><given-names>S. I.</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>Одинцев</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Odintsev</surname><given-names>I. N.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Центральный аэрогидродинамический институт им. проф. Н. Е. Жуковского</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>ИМАШ РАН им. А. А. Благонравова</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>06</month><year>2016</year></pub-date><volume>82</volume><issue>6</issue><fpage>44</fpage><lpage>56</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Писарев В.С., Матвиенко Ю.Г., Елеонский С.И., Одинцев И.Н., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Писарев В.С., Матвиенко Ю.Г., Елеонский С.И., Одинцев И.Н.</copyright-holder><copyright-holder xml:lang="en">Pisarev V.S., Matvienko Y.G., Eleonskii S.I., Odintsev I.N.</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/264">https://www.zldm.ru/jour/article/view/264</self-uri><abstract><p>Исследована эволюция параметров механики разрушения на различных этапах малоциклового повреждения. Разработанный подход основан на обработке результатов оптических интерференционных измерений деформационного отклика на малое приращение длины трещины. Тремя последовательными симметричными разрезами моделируют процесс распространения усталостной трещины через зону накопленных повреждений, вызванных малоцикловой усталостью. Исходная экспериментальная информация - величины тангенциальных компонент перемещений, которые измеряют в нескольких точках на берегах разреза методом электронной спекл-интерферометрии. Коэффициенты интенсивности напряжений (КИН) и Т-напряжений определяют на основе решения Уильямса. Получены величины раскрытия, коэффициентов интенсивности напряжений и Т-напряжений для трещин различной длины при фиксированных значениях циклов предварительного нагружения Nc, равных О, 100, 1000, 1800, 2500 и 3300. Построены зависимости параметров механики разрушения для трещин фиксированной длины от Nc.</p></abstract><trans-abstract xml:lang="en"><p>Evolution of the parameters of fracture mechanics at different stages of low cycle damage is analyzed. The developed approach is based on processing the results of optical interferometric measurements of the deformation response to a small increment of the crack length. Three consecutive symmetrical notches are used to simulate the process of fatigue crack propagation through the zone of accumulated damage induced by low cycle fatigue. The magnitude of tangential component of the displacement measured at several points on the edge of the notch using speckle-inter-ferometry is an input experimental data. The first four coefficients of the Williams series solution are used to determine the stress intensity factor (SIF) and T-stress values. The values of crack opening, SIF and T-stress for cracks of different lengths are obtained at a fixed number of preliminary loading cycles Nc = 0, 100, 1000, 1800, 2500, and 3300. The dependences of the parameters of fracture mechanics for the cracks of fixed length on Nc number which illustrate a process of fatigue damage accumulation are constructed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>low-cyclic fatigue</kwd><kwd>stress intensity factor</kwd><kwd>T-stress</kwd><kwd>method of successively increasing crack length (crack compliance method)</kwd><kwd>speckle-interferometry</kwd><kwd>малоцикловая усталость</kwd><kwd>коэффициент интенсивности напряжений</kwd><kwd>Т-напряжения</kwd><kwd>метод последовательного наращивания длины трещины</kwd><kwd>электронная спекл-интерферометрия</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">Osgood C. C. 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