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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">ipolytech</journal-id><journal-title-group><journal-title xml:lang="ru">iPolytech Journal</journal-title><trans-title-group xml:lang="en"><trans-title>iPolytech Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2782-4004</issn><issn pub-type="epub">2782-6341</issn><publisher><publisher-name>Irkutsk National Research Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/1814-3520-2022-4-601-611</article-id><article-id custom-type="elpub" pub-id-type="custom">ipolytech-644</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>МАШИНОСТРОЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Оценивание неопределенности измерения при испытаниях на растяжение высокопрочных болтов</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the measurement uncertainty during the tensile tests of high-strength bolts</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2432-212X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хамханова</surname><given-names>Д. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Khamkhanova</surname><given-names>D. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хамханова Дарима Нимбуевна, доктор технических наук, доцент, доцент кафедры «Стандартизация, метрология и управление качеством»</p><p>670033, г. Улан-Удэ, ул. Ключевская, 40B, стр. 1, Россия</p></bio><bio xml:lang="en"><p>Darima N. Khamkhanova, Dr. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Standardization, Metrology and Quality Management</p><p>40B, Klyuchevskaya St., bldg.1, Ulan-Ude 670033, Russia</p></bio><email xlink:type="simple">darima-1956@yandex.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>Хадыков</surname><given-names>М. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Khadykov</surname><given-names>M. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хадыков Михаил Томович, кандидат технических наук, доцент, доцент кафедры «Стандартизация, метрология и управление качеством»</p><p>670033, г. Улан-Удэ, ул. Ключевская, 40B, стр. 1, Россия</p></bio><bio xml:lang="en"><p>Mikhail T. Khadykov, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Standardization, Metrology and Quality Management</p><p>40B, Klyuchevskaya St., bldg.1, Ulan-Ude 670033, Russia</p></bio><email xlink:type="simple">khadykovmihail@yandex.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>Мосоров</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Mosorov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мосоров Владимир Иванович, кандидат технических наук, доцент, доцент кафедры «Металловедение и технологии обработки материалов»</p><p>670033, г. Улан-Удэ, ул. Ключевская, 40B, стр. 1, Россия</p></bio><bio xml:lang="en"><p>Vladimir I. Mosorov, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Metallurgical Science and Material Processing Technologies</p><p>40B, Klyuchevskaya St., bldg.1, Ulan-Ude 670033, Russia</p></bio><email xlink:type="simple">vlmosorov@yandex.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>Бахрунов</surname><given-names>К. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakhrunov</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бахрунов Константин Константинович, кандидат технических наук, доцент, доцент кафедры «Металловедение и технологии обработки материалов»</p><p>670033, г. Улан-Удэ, ул. Ключевская, 40B, стр. 1, Россия</p></bio><bio xml:lang="en"><p>Konstantin K. Bakhrunov, Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Metallurgical Science and Material Processing Technologies</p><p>40B, Klyuchevskaya St., bldg.1, Ulan-Ude 670033, Russia</p></bio><email xlink:type="simple">bkk1975@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Восточно-Сибирский государственный университет технологий и управления</institution><country>Россия</country></aff><aff xml:lang="en"><institution>East Siberia State University of Technology and Management</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2022</year></pub-date><volume>26</volume><issue>4</issue><fpage>601</fpage><lpage>611</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хамханова Д.Н., Хадыков М.Т., Мосоров В.И., Бахрунов К.К., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Хамханова Д.Н., Хадыков М.Т., Мосоров В.И., Бахрунов К.К.</copyright-holder><copyright-holder xml:lang="en">Khamkhanova D.N., Khadykov M.T., Mosorov V.I., Bakhrunov K.K.</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://ipolytech.elpub.ru/jour/article/view/644">https://ipolytech.elpub.ru/jour/article/view/644</self-uri><abstract><p>Цель – разработка методики оценивания неопределенности измерения при испытаниях на растяжение металлов и сплавов. Для разработки данной методики проводились исследования источников неопределенности. Объектом исследований явились высокопрочные болты из стали марки 40Х «Селект», которые подвергали испытаниям на растяжение по методике согласно ГОСТ 1497-85 на универсальной разрывной машине УММ-100. Выявлены основные источники неопределенности измерения относительного удлинения и относительного сужения: повторные измерения относительного удлинения; погрешности измерения штангенциркулем конечной длины, нанесения начальной длины расчетного участка и силоизмерительного устройства машины. Также к ним относятся ошибка отсчета оператора, повторные измерения относительного сужения, погрешность измерения микрометром диаметра образца до начала и после испытаний. Показано, что при проведении измерений при температуре окружающей среды, отличной от значения нормальной температуры ((20±5)С), появляется дополнительный источник неопределенности – отклонение температуры. Приписаны предполагаемые законы распределения входных величин. Показано, что при испытаниях на растяжение имеются две составляющие неопределенности, оцениваемые по типам А и В. Составлена математическая модель измерения относительного удлинения и относительного сужения при испытаниях на растяжение. Оценены стандартные неопределенности входных величин исходя из предполагаемых законов их распределения. Выявлено наличие корреляционной связи между конечной длиной расчетного участка, диаметром образца после испытания и прилагаемым усилием. Получены выражения для расчета коэффициентов чувствительности, характеризующие изменение выходной величины (относительного удлинения) от изменения входных величин. Оценены суммарная и расширенная неопределенности измерения. На основании проделанной работы прописана процедура оценивания неопределенности измерения при испытаниях высокопрочных болтов на растяжение. Показано, что оценивание неопределенности измерений при испытании продукции является достаточно трудоемкой работой, предлагается разработка методик оценивания неопределенности измерения при испытаниях и внесение их в нормативные документы на методы контроля.</p></abstract><trans-abstract xml:lang="en"><p>A developed methodology for evaluating measurement uncertainty during the tensile tests of metals and alloys is presented. In this connection, the various sources of uncertainty are considered. The object of studies included high-strength bolts made of 40Kh “Selekt” steel, which were subjected to tensile tests according to the GOST 1497-85 State Standard using a UMM-100 universal tensile testing machine. The basic sources of uncertainty in the measurement of relative elongation and reduction were shown to include repeated measurements of relative elongation; errors of measuring the finite length by a vernier calliper and marking the initial length of a calculated section, as well as the measurement error of the tensile testing machine. These also include operator reading error, repeated relative reduction measurements, as well as the error of measuring the sample diameter by a micrometer before and after the tests. During the measurements, temperature deviation was demonstrated to constitute an additional source of uncertainty when the ambient temperature is different from the standard temperature value ((20±5)°C). Assumptions underlying laws describing the distribution of input values were assigned. Tensile tests are shown to be characterised by two components of uncertainty evaluated as types A and B. A mathematical model constructed for measuring relative elongation and relative reduction during tensile tests is presented. The standard uncertainties of input values are evaluated based on the assumed laws of their distribution. A correlation between the final length of the calculated section, the diameter of the sample following the test, and the applied force, is revealed. Expressions for the calculation of sensitivity coefficients, which characterize variations in the output value (relative elongation) depending on variations of input values, were obtained. The total and extended measurement uncertainties were evaluated. Based on the performed studies, a procedure for evaluating measurement uncertainty when carrying out tensile tests of high-strength bolts was described. The evaluation of measurement uncertainty during the product testing was shown to be a rather labourconsuming work. In this regard, the authors propose the development of procedures for evaluating the measurement uncertainty during the tests with their inclusion into regulatory documents for control methods.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>измерение</kwd><kwd>испытание</kwd><kwd>метод</kwd><kwd>неопределенность измерения</kwd><kwd>стандартная неопределенность</kwd><kwd>растяжение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>measurement</kwd><kwd>test</kwd><kwd>method</kwd><kwd>measurement uncertainty</kwd><kwd>standard uncertainty</kwd><kwd>tensile stress</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">Парышев Д. Н., Герасимов В. Я. Влияние длины болтов на прочность при растяжении // Транспортное строительство. 2009. № 6. С. 14–15.</mixed-citation><mixed-citation xml:lang="en">Paryshev D. N., Gerasimov V. Ja. 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