Связь характеристик многокомпонентных порошковых материалов со скоростью распространения упругой волны
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Дата
2018
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
По результатам статистической обработки массива экспериментальных данных установлена связь скорости распространения упругой волны с характеристиками состава и свойств многокомпонентных порошковых материалов на основе меди, у которых физико-механические свойства исходных порошков существенно отличаются. Показано, что использование скорости распространения упругой волны в таких материалах перспективно не только для определения функционально связанных с ней модуля упругости и плотности материала, но и для разработки на основе корреляционных зависимостей методов неразрушающей оценки таких свойств материала как твёрдость, прочность, износ, коэффициент трения, а также параметров структуры – пористости и состава.
According to the results of statistical processing of the experimental data array, the relationship between the elastic waves velocity with the characteristics of the composition and the properties of multicomponent powder materials on the basis of copper, in which the physical and mechanical properties of the original powders are significantly different. The effectiveness of using the methods of evaluation depends essentially on the physical and mechanical properties of the raw powders and on the co-influence of various factors. Therefore, in order to increase it, it is necessary to adapt the control methodology to the particulars of the composition of the material by conducting a more detailed statistical analysis and using special approaches for abstraction from the hindering factors. In the conditions of sintering, the chemical interaction between the initial components and inclusions did not occur and new phases were not formed. It was shown that the use of the elastic waves velocity in such materials is not only promising not only for determining the module of elasticity and density of the material functionally related to it, but also for developing on the basis of correlation dependences of methods of non-destructive evaluation of material properties such as hardness, strength, wear, coefficient of friction, as well as parameters of structure - porosity and the composition.
According to the results of statistical processing of the experimental data array, the relationship between the elastic waves velocity with the characteristics of the composition and the properties of multicomponent powder materials on the basis of copper, in which the physical and mechanical properties of the original powders are significantly different. The effectiveness of using the methods of evaluation depends essentially on the physical and mechanical properties of the raw powders and on the co-influence of various factors. Therefore, in order to increase it, it is necessary to adapt the control methodology to the particulars of the composition of the material by conducting a more detailed statistical analysis and using special approaches for abstraction from the hindering factors. In the conditions of sintering, the chemical interaction between the initial components and inclusions did not occur and new phases were not formed. It was shown that the use of the elastic waves velocity in such materials is not only promising not only for determining the module of elasticity and density of the material functionally related to it, but also for developing on the basis of correlation dependences of methods of non-destructive evaluation of material properties such as hardness, strength, wear, coefficient of friction, as well as parameters of structure - porosity and the composition.
Опис
Ключові слова
коэффициент корреляции, физико-механические свойства, неразрушающий контроль, коэффициент трения, пористость, correlation coefficient, structure, non-destructive testing
Бібліографічний опис
Безымянный Ю. Г. Связь характеристик многокомпонентных порошковых материалов со скоростью распространения упругой волны / Ю. Г. Безымянный, А. Н. Высоцкий, Т. И. Истомина // Вісник Національного технічного університету "ХПІ". Сер. : Електроенергетика та перетворювальна техніка : зб. наук. пр. – Харків : НТУ "ХПІ", 2018. – № 8 (1284). – С. 65-68.