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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">sustain</journal-id><journal-title-group><journal-title xml:lang="ru">Надежность</journal-title><trans-title-group xml:lang="en"><trans-title>Dependability</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1729-2646</issn><issn pub-type="epub">2500-3909</issn><publisher><publisher-name>RAMS Journal Limited liability company</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21683/1729-2646-2023-23-3-23-27</article-id><article-id custom-type="elpub" pub-id-type="custom">sustain-540</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>СИСТЕМНЫЙ АНАЛИЗ В ЗАДАЧАХ НАДЕЖНОСТИ И БЕЗОПАСНОСТИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SYSTEM ANALYSIS IN DEPENDABILITY AND SAFETY</subject></subj-group></article-categories><title-group><article-title>Пересмотр роли испытаний при нерегулярном нагружении при получении научных выводов о пределе выносливости</article-title><trans-title-group xml:lang="en"><trans-title>Reconsidering the Role of Fatigue Irregular Testing in Scientific Conclusions About the Fatigue Limit</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>Гадолина</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gadolina</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гадолина Ирина Викторовна - кандидат технических наук, доцент, старший научный сотрудник,</p><p>Москва</p></bio><bio xml:lang="en"><p>Irina V. Gadolina - Candidate of Engineering, Associate Professor, Senior Researcher,</p><p>Moscow</p></bio><email xlink:type="simple">gadolina@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Mechanical Engineering Research Institute of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>22</day><month>08</month><year>2023</year></pub-date><volume>23</volume><issue>3</issue><fpage>23</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гадолина И.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Гадолина И.В.</copyright-holder><copyright-holder xml:lang="en">Gadolina I.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://www.dependability.ru/jour/article/view/540">https://www.dependability.ru/jour/article/view/540</self-uri><abstract><sec><title>Цель</title><p>Цель. Мы предлагаем метод использования испытания на усталость при нерегулярной нагрузке для изучения ключевых тем усталости материалов, а именно, касающихся предела усталости. Характеристику предел усталости важно знать: для ускорения испытаний; для обеспечения стабильного и надежного обслуживания машиностроительных изделий.</p></sec><sec><title>Методы</title><p>Методы. Сравнительные исследования при блочных и случайных нагрузках предоставляют возможность исследователям делать соответствующие выводы без чрезмерного увеличения времени испытаний и без использования испытаний при сверхзвуковых частотах, которые в некоторой степени противоречивы. Мы приводим пример применения предложенного метода. Вторая стадия усталости, а именно стадия распространения трещины, также рассматривается. Основная идея аналогична – испытания при нерегулярной нагрузке дают возможность судить о максимуме среди малых амплитуд, которые не являются повреждающими.</p></sec><sec><title>Выводы</title><p>Выводы. Предложенный метод позволяет с использованием специальных видов испытаний получить ценную для инженеров и исследователей информацию, при этом испытания являются более приближенными к реальным условиям эксплуатации машин</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim</title><p>Aim. We suggest a method of using the fatigue test in case of irregular loading for studying the key subject matters related to material fatigue, specifically those to do with fatigue limit. It is important to know the fatigue limit characteristic in order to speed up tests; in order to ensure stable and reliable servicing of machines.</p></sec><sec><title>Methods</title><p>Methods. Comparative examinations in cases of block and random loadings enable researchers to make corresponding conclusions without excessively extending the duration of tests and without recurring to supersonic frequency tests that are to a certain degree controversial. An example of applying the proposed method is given. The second stage of fatigue, specifically the crack propagation stage, is also considered. The key idea is similar. Testing under irregular loading allows making conclusions regarding the maximum among small amplitudes that do not cause damage.</p></sec><sec><title>Conclusions</title><p>Conclusions. The proposed method allows using special testing methods to obtain information that is valuable to engineers and researchers. The tests are also closer to the field conditions of machinery operation.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>механическая усталость</kwd><kwd>предел выносливости</kwd><kwd>блочная нагрузка</kwd><kwd>суммирование линейных повреждений</kwd><kwd>статистика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mechanical fatigue</kwd><kwd>durability limit</kwd><kwd>block loading</kwd><kwd>addition of linear damage</kwd><kwd>statistics</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23-29-10097, https://rscf.ru/ project/23-29-10097/</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">SonsinoC.M., Heim R, MelzT. Lightweight-Structural Durability Design by Consideration of Variable Amplitude Loading // International Journal of Fatigue. 2016. Vol. 91. Part 2. 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