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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 pub-id-type="doi">10.26896/1028-6861-2026-92-6-56-67</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2859</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>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. МЕХАНИКА МАТЕРИАЛОВ: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. MECHANICAL TESTING METHODS</subject></subj-group></article-categories><title-group><article-title>О циклической деградации судовой стали F500W, оцененной методами акустической эмиссии и корреляции цифровых изображений</article-title><trans-title-group xml:lang="en"><trans-title>About cyclic degradation of F500W shipbuilding steel, assessed by acoustic emission and digital image correlation methods</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>Ботвина</surname><given-names>Л. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Botvina</surname><given-names>L. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Людмила Рафаиловна Ботвина</p><p>119334, Москва, Ленинский просп., 49.</p></bio><bio xml:lang="en"><p>Ludmila R. Botvina </p><p>49, Leninskii prosp., Moscow, 119334</p></bio><email xlink:type="simple">lbotvina@imet.ac.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>Болотников</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Bolotnikov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Игоревич Болотников </p><p>119334, Москва, Ленинский просп., 49.</p></bio><bio xml:lang="en"><p>Alexey I. Bolotnikov </p><p>49, Leninskii prosp., Moscow, 119334</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>Тютин</surname><given-names>М. Р</given-names></name><name name-style="western" xml:lang="en"><surname>Tyutin</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марат Равилевич Тютин </p><p>119334, Москва, Ленинский просп., 49.</p></bio><bio xml:lang="en"><p>Marat R. Tyutin </p><p>49, Leninskii prosp., Moscow, 119334</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии и материаловедения им. А. А. Байкова Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>04</day><month>07</month><year>2026</year></pub-date><volume>92</volume><issue>6</issue><fpage>56</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ботвина Л.Р., Болотников А.И., Тютин М.Р., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ботвина Л.Р., Болотников А.И., Тютин М.Р.</copyright-holder><copyright-holder xml:lang="en">Botvina L.R., Bolotnikov A.I., Tyutin M.R.</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/2859">https://www.zldm.ru/jour/article/view/2859</self-uri><abstract><p>Изучено влияние предварительного циклического нагружения на прочностные свойства и характеристики поврежденности стали F500W при растяжении, оцененные методами акустической эмиссии и корреляции цифровых изображений. Показано, что деформационные зависимости параметров акустической эмиссии и корреляции цифровых изображений согласуются между собой и отражают стадийность процесса разрушения, обусловленную особенностями этого процесса и характеризующуюся достижением критических точек на кривой растяжения. Определены информативные показатели циклической деградации, включающие суммарное число событий ΣNАЭ, среднюю активность сигналов акустической эмиссии bАЭ-параметр, среднее значение угла нарастания RA, размеры слабо- и сильнодеформированной пластических зон (SL, SH). Обнаружено смещение максимума bАЭ-параметра с увеличением относительной долговечности (N/Nf) в сторону меньшей деформации, связанное с более ранним переходом от накопления малых трещин к их слиянию, подтверждаемому дальнейшим снижением bАЭ- и D-параметров. Установлено, что предварительное циклирование образцов стали F500W до числа циклов N/Nf , равного 0,4, 0,6, не приводит к существенным изменениям вида диаграмм деформации, остаточной прочности и работы разрушения, но увеличение этого числа до N/Nf = 0,8 вызывает повышение предела текучести, снижение предела прочности, работы разрушения и отношения предела прочности к пределу текучести, что свидетельствует о снижении пластичности материала после циклической нагрузки.</p></abstract><trans-abstract xml:lang="en"><p>This study investigated the influence of preliminary cyclic loading on the strength properties and damage characteristics of F500W steel under tension, as evaluated by acoustic emission and digital image correlation methods. The deformation dependencies of the acoustic emission and digital image correlation parameters were found to be consistent with each other, reflecting the stages of the fracture process, caused by the features of this process and characterized by the achievement of critical points on the stress-strain curve. Informative indicators of cyclic degradation were determined, including the total number of events (ΣNAE), the average acoustic emission signal activity the bAE-value, amplitude damage parameter D, the average rise angle (RA) and the sizes of the low- and high-deformation plastic zones (SL and SH). A shift in the maximum bAE-value towards lower deformation has been detected with an increase in relative lifetime (N/Nf), associated with an earlier transition from the accumulation of small cracks to their merging. This is confirmed by a further decrease in the bAE-value and D parameter. Preliminary cycling of F500W steel specimens to N/Nf = 0.4 and 0.6 does not significantly alter the shape of the deformation curves, and values of residual strength and fracture work. However, increasing the number of cycles to N/Nf = 0.8 causes an increase in yield strength and a decrease in tensile strength, fracture energy, and the ratio of tensile strength to yield strength. This indicates a decrease in the material’s plasticity after cyclic loading.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>усталость</kwd><kwd>арктическая сталь F500W</kwd><kwd>деградация</kwd><kwd>акустическая эмиссия</kwd><kwd>корреляция цифровых изображений</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fatigue</kwd><kwd>arctic steel F500W</kwd><kwd>degradation</kwd><kwd>acoustic emission</kwd><kwd>digital image correlation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Российского научного фонда (проект № 23-19-00784).</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">Qiao K., Liu Z., Sun Z., et al. Effects of low temperature overload and cycling temperature on fatigue crack growth behavior of ship steels in Arctic environments / Ocean Eng. 2023. Vol. 288. 116090. 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