Studying the influence of the scale factor on the parameters of mechoelectric transformations during elastic excitation of concrete / T. V. Fursa, K. Yu. Osipov, S. I. Chekhovskikh
Уровень набора: Russian Journal of Nondestructive TestingЯзык: английский.Страна: .Резюме или реферат: The results of experimental studies of the influence of the geometrical dimensions of heavy-concrete articles on the parameters of the electric response under an elastic impact excitation are presented. It is established that an increase in the length of models at a constant cross section leads to a decrease in the electrical-response magnitude and an increase in the signal attenuation factor, as well as to a shift of the main spectral maximum of electrical signals toward lower frequencies and a change in the positions and ration of significant spectral peaks. It is shown that changes in the geometric dimensions of heavy-concrete articles do not lead to appreciable changes in the maximum cross-correlation coefficient between the electrical-response spectrum and the spectrum of freely damped harmonic oscillations.Примечания о наличии в документе библиографии/указателя: [References: p. 641 (14 tit.)].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | electrical response to an impact excitation | электрический отклик | concrete | бетон | scale factor | масштабный коэффициент | amplitude-frequency characteristics | амплитудно-частотные характеристики | attenuation | затухание | cross-correlation coefficient | коэффициент взаимной корреляции Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: p. 641 (14 tit.)]
The results of experimental studies of the influence of the geometrical dimensions of heavy-concrete articles on the parameters of the electric response under an elastic impact excitation are presented. It is established that an increase in the length of models at a constant cross section leads to a decrease in the electrical-response magnitude and an increase in the signal attenuation factor, as well as to a shift of the main spectral maximum of electrical signals toward lower frequencies and a change in the positions and ration of significant spectral peaks. It is shown that changes in the geometric dimensions of heavy-concrete articles do not lead to appreciable changes in the maximum cross-correlation coefficient between the electrical-response spectrum and the spectrum of freely damped harmonic oscillations
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