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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-192</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>Методика определения коэффициентов уравнения скорости роста трещины при циклическом нагружении</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the Coefficients of the Crack Growth Rate Equation upon Cyclic Load</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>Савкин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Savkin</surname><given-names>A. N.</given-names></name></name-alternatives><email xlink:type="simple">tfpik@vstu.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>Андроник</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Andronik</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">tfpik@vstu.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>Корадди</surname><given-names>Р. .</given-names></name><name name-style="western" xml:lang="en"><surname>Koraddy</surname><given-names>R. .</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>Волгоградский государственный технический университет</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>BiSS-ITW</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>01</month><year>2016</year></pub-date><volume>82</volume><issue>1</issue><fpage>57</fpage><lpage>63</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савкин А.Н., Андроник А.В., Корадди Р..., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Савкин А.Н., Андроник А.В., Корадди Р...</copyright-holder><copyright-holder xml:lang="en">Savkin A.N., Andronik A.V., Koraddy 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/192">https://www.zldm.ru/jour/article/view/192</self-uri><abstract><p>Предложена методика определения коэффициентов Пэриса. Описан подход, позволяющий получить промежуточные значения скоростей роста трещины на диаграмме усталостного разрушения в результате каждого испытания. Показано влияние эффекта закрытия трещины на скорость ее роста, получены значения размаха эффективного коэффициента интенсивности напряжений (КИН). Предложены пути развития методики, например, для описания области устойчивого роста трещины, ведущего к разрушению.</p></abstract><trans-abstract xml:lang="en"><p>No general procedure for determination of Paris coefficients is available nowadays. An approach providing determination of the intermediate values of the crack growth rates on da/dN - dK fatigue fracture curve in each test is developed. The effect of the crack closure on the crack growth rate is demonstrated and the apmlitute of the effective stress intensity factor (SIF) is obtained. Prospects of developing the proposed procedure are discussed, for example, to determine the region of stable crack growth on da/dN - dK curve leading to the fracture.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Paris curve</kwd><kwd>da/dN- dK curve</kwd><kwd>fatigue fracture diagram</kwd><kwd>curve approximation</kwd><kwd>crack closure estimation</kwd><kwd>кривая Пэриса</kwd><kwd>диаграмма усталостного разрушения</kwd><kwd>аппроксимация кривой</kwd><kwd>оценка закрытия 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">Sunder R. Unraveling the Science of Variable Amplitude Fatigue / Journal of ASTM International. 2012. Vol. 9. N 1. P. 20 - 65.</mixed-citation><mixed-citation xml:lang="en">Sunder R. Unraveling the Science of Variable Amplitude Fatigue / Journal of ASTM International. 2012. Vol. 9. N 1. P. 20 - 65.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Shijve J. Fatigue of Structures and Materials. - Delft: Springer, 2009. - 621 p.</mixed-citation><mixed-citation xml:lang="en">Shijve J. Fatigue of Structures and Materials. - Delft: Springer, 2009. - 621 p.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Bannantine J. A., Corner J. J., Handrock J. L. Fundamentals of Metal Fatigue Analysis. - New Jersey: Prentice Hall, 1989. - 273 p.</mixed-citation><mixed-citation xml:lang="en">Bannantine J. A., Corner J. J., Handrock J. L. Fundamentals of Metal Fatigue Analysis. - New Jersey: Prentice Hall, 1989. - 273 p.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Bekal S. Calculation of Fatigue Crack Growth on Variable Amplitude Loading: Master thesis. Manipal Institute of Technology. - Manipal, India. 2013. -118 p.</mixed-citation><mixed-citation xml:lang="en">Bekal S. Calculation of Fatigue Crack Growth on Variable Amplitude Loading: Master thesis. Manipal Institute of Technology. - Manipal, India. 2013. -118 p.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Sunder R. Engineering Application of Threshold Stress Intensity. ASTM-ESIS Annual Symposium on Fracture Mechanics, Florida, USA, 13-15 Nov., 2013. P. 24-48.</mixed-citation><mixed-citation xml:lang="en">Sunder R. Engineering Application of Threshold Stress Intensity. ASTM-ESIS Annual Symposium on Fracture Mechanics, Florida, USA, 13-15 Nov., 2013. P. 24-48.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Сервогидравлическая машина для испытания материалов BiSS Nano [Электронный ресурс]. URL: http://biss.in/cms/ index.php?opti-on=com_content&amp;view=article&amp;id=69&amp;Itemid=111.</mixed-citation><mixed-citation xml:lang="en">Сервогидравлическая машина для испытания материалов BiSS Nano [Электронный ресурс]. URL: http://biss.in/cms/ index.php?opti-on=com_content&amp;view=article&amp;id=69&amp;Itemid=111.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Standard Test Method for Measurement of Fatigue Crack Growth Rates ASTM E647-08, 2008. - 45 p.</mixed-citation><mixed-citation xml:lang="en">Standard Test Method for Measurement of Fatigue Crack Growth Rates ASTM E647-08, 2008. - 45 p.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Трощенко В. Т., Лебедев А. А., Стрижало В. А. Механическое поведение материалов при различных видах нагружения. - Киев: Логос, 2000. - 571 с.</mixed-citation><mixed-citation xml:lang="en">Трощенко В. Т., Лебедев А. А., Стрижало В. А. Механическое поведение материалов при различных видах нагружения. - Киев: Логос, 2000. - 571 с.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Горяинов В. Б., Павлов И. В., Цветкова Г. М. Математическая статистика. - М.: Изд-во МГТУ им. Н. Э. Баумана, 2001. - 424 с.</mixed-citation><mixed-citation xml:lang="en">Горяинов В. Б., Павлов И. В., Цветкова Г. М. Математическая статистика. - М.: Изд-во МГТУ им. Н. Э. Баумана, 2001. - 424 с.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Forman R. G., Mettu S. R. Behavior of Surface and Corner Cracks Subjected to Tensile and Bending Loads in Ti-6Al-4V Alloy. Fracture Mechanics: 26th ASTM Symposium, Philadelphia, USA, ASTM STP 1131. 1992. Vol. 1. P. 519-546.</mixed-citation><mixed-citation xml:lang="en">Forman R. G., Mettu S. R. Behavior of Surface and Corner Cracks Subjected to Tensile and Bending Loads in Ti-6Al-4V Alloy. Fracture Mechanics: 26th ASTM Symposium, Philadelphia, USA, ASTM STP 1131. 1992. Vol. 1. P. 519-546.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Savkin A. N., Sedov A. A., Andronik A. V. The steel damageability simulation under random loading by the power, energetical and strain fracture criterions / Periodica Polytechnica. Mechanical Engineering. 2014. Vol. 58. N2. P. 119-126.</mixed-citation><mixed-citation xml:lang="en">Savkin A. N., Sedov A. A., Andronik A. V. The steel damageability simulation under random loading by the power, energetical and strain fracture criterions / Periodica Polytechnica. Mechanical Engineering. 2014. Vol. 58. N2. P. 119-126.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
