Влияние структурного состояния металла на его деформационные характеристики
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НТУ "ХПИ"
Abstract
В работе рассмотрены вопросы практического определения надежности конструкции посредством метода контроля степени деградации структуры материала в процессе эксплуатации. Статья посвящена использованию тензометрического метода для выявления зарождения усталостных трещин докритических размеров в сталях и элементах несущих конструкций. Инструментальный метод позволяет уменьшить затраты на проведение опытной эксплуатации конструкций с продолженным изначально назначенным сроком службы. Экспериментальные данные, полученные методами тензорегистрации и фиксации отскока металлического шарика хорошо согласуются между собой.
The paper discusses the practical means of determining the reliability of a design method of controlling the degree of degradation of the structure of the material during exploitation. Surface hardening to create a surface layer of material is a structural condition that increases the resistance to fatigue crack nucleation prevents (or difficult) accumulation, movement and access to surface defects in the crystalline structure of the material. The article is dedicated to the use of strain gauge method for the detection of nucleation of fatigue cracks in steel subcritical dimensions and elements of supporting structures. The instrumental method can reduce the costs of the trial operation structures with prolonged initially appointed for a period of exploitation. The experimental data obtained by the strain-measuring method and fixing metal ball rebound in good agreement.
The paper discusses the practical means of determining the reliability of a design method of controlling the degree of degradation of the structure of the material during exploitation. Surface hardening to create a surface layer of material is a structural condition that increases the resistance to fatigue crack nucleation prevents (or difficult) accumulation, movement and access to surface defects in the crystalline structure of the material. The article is dedicated to the use of strain gauge method for the detection of nucleation of fatigue cracks in steel subcritical dimensions and elements of supporting structures. The instrumental method can reduce the costs of the trial operation structures with prolonged initially appointed for a period of exploitation. The experimental data obtained by the strain-measuring method and fixing metal ball rebound in good agreement.
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Влияние структурного состояния металла на его деформационные характеристики / К. В. Вакуленко [и др.] // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Динамика и прочность машин. – Харьков : НТУ "ХПИ". – 2015. – № 55 (1164). – С. 31-34.
