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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">fwj</journal-id><journal-title-group><journal-title xml:lang="ru">Трение и и износ</journal-title><trans-title-group xml:lang="en"><trans-title>Title in english</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0000-0000</issn><issn pub-type="epub">0000-0000</issn><publisher><publisher-name>AGU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32864/0202-4977-2024-45-4-350-359</article-id><article-id custom-type="elpub" pub-id-type="custom">fwj-33</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Синергетические принципы и закономерности разрушения материалов в условиях малоцикловой усталости</article-title><trans-title-group xml:lang="en"><trans-title>Synergetics Principles and Regularities Fracture of Materials under Low Cycle Fatigue Conditions</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>Джанахмедов</surname><given-names>А. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Janahmadov</surname><given-names>A. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мардакянский пр., 30, г. Баку AZ1045</p></bio><bio xml:lang="en"><p>Mardakan ave., 30, Baku AZ1045</p></bio><email xlink:type="simple">dzhanakhmedov@yahoo.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Азербайджанская Национальная академия авиации (АНАА)</institution><country>Азербайджан</country></aff><aff xml:lang="en"><institution>Azerbaijan National Aviation Academy</institution><country>Azerbaijan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2026</year></pub-date><volume>45</volume><issue>4</issue><fpage>350</fpage><lpage>359</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; AGU, 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">AGU</copyright-holder><copyright-holder xml:lang="en">AGU</copyright-holder><license xlink:href="https://fwj.ejournal.by/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://fwj.ejournal.by/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://fwj.ejournal.by/jour/article/view/33">https://fwj.ejournal.by/jour/article/view/33</self-uri><abstract><p>В работе рассматриваются синергетические принципы усталостного разрушения, позволяющие выделить фундаментальные механические характеристики материалов и оценить кинетику повреждаемости при разрушении металлов через критические параметры, контролирующие точки бифуркаций. Усталостное разрушение при этом рассматривается как кинетический процесс в зависимости от порядка поступления энергии циклического нагружения. На основе принципов физической мезомеханики и синергетики показано, что механические характеристики циклически нагруженного трибоконтакта являются важными параметрами материала, которые определяют уровень вносимой в каждом цикле нагружения энергии деформации на каждом масштабном уровне. Выявлено, что в трибоконтактах для практических целей необходимо добиваться, чтобы напряжение между покрытием и подложкой соответствовало предельной эластичности материалов, согласно критерию Гриффитса, а для вязких материалов принято во внимание другое значение критического напряжения — модификация Ирвина-Оравана. Приводятся критерии переходных режимов контакта, учитывая, что покрытие должно претерпевать изменения в полном согласии с подложкой, когда система деформируется под циклической нагрузкой. Результаты исследований при оценке механических характеристик материалов системы «покрытие — подложка» могут быть использованы в качестве диагностических признаков при анализе развития поврежденности трибоконтакта, работающих в условиях циклических усталостных нагружений.</p></abstract><trans-abstract xml:lang="en"><p>The work examines the synergetic principles of fatigue fracture, which make it possible to identify the fundamental mechanical characteristics of materials and evaluate the kinetics of damage during the destruction of metals through critical parameters that control bifurcation points. In this case, fatigue failure is considered as a kinetic process depending on the order of supply of cyclic loading energy. Based on the principles of physical mesomechanics and synergetics, it is shown that the mechanical characteristics of a cyclically loaded tribocontact are important material parameters that determine the level of strain energy introduced in each loading cycle at each scaling level. It has been revealed that for practical purposes in tribocontacts it is necessary to ensure that the tension between the coating and the substrate corresponds to the maximum elasticity of the materials, according to the Griffiths criterion, and for viscous materials, a different value of the critical stress is considered — the Irwin-Oravan modification. Criteria for transient contact modes are given, considering that the coating must undergo changes in full agreement with the substrate when the system deforms under cyclic load. The research results in assessing the mechanical characteristics of materials of the coating-substrate system can be used as diagnostic signs in analyzing the development of damage to tribocontacts operating under cyclic fatigue loading conditions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>синергетика</kwd><kwd>усталостное нагружение</kwd><kwd>трибоконтакт</kwd><kwd>развитие трещин</kwd><kwd>«покрытие подложка»</kwd><kwd>критерий переходного режима контакта</kwd></kwd-group><kwd-group xml:lang="en"><kwd>synergetics</kwd><kwd>fatigue loading</kwd><kwd>tribocontact</kwd><kwd>crack development</kwd><kwd>coating-substrate</kwd><kwd>criterion for the transition mode of contact</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">Janahmadov A.Kh. and Javadov M.Y. Synergetics and Fractals in Tribology. — USA. 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