Research of Electrical Response Communication Parameters on the Pulse Mechanical Impact with the Stress_Strain State of Concrete Under Uniaxial Compression

20th International Conference for Students and Young Scientists: Modern Techniques and Technologies

工业技术;材料科学

Dann, D.^1 ; Demikhova, A.^1 ; Fursa, T.^1 ; Kuimova, M.^1

Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Amplitude frequency characteristics;    Communication parameters;    Constant velocities;    Electrical response;    High-Frequency regions;    Mechanical impacts;    Stress strain state;    Uni-axial compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/66/1/012036/pdf
DOI  :  10.1088/1757-899X/66/1/012036

来源: IOP

【 摘 要 】

The article presents the results of research of the electrical response on elastic impact excitation of heavy concrete samples under uniaxial compression. In this paper we recorded and analyzed electrical responses during uniaxial compression of concrete samples with a constant velocity. Studies have shown that in the process of uniaxial compression of concrete samples, the transformation of amplitude-frequency characteristics of the electrical response is observed. The stage of elastic deformation of concrete samples is characterized by a centershift of gravity of the spectrum of the electrical response towards lower frequencies. Dramatic centershift of gravity of the spectrum of the electrical response to the high frequency region characterizes the beginning of fracturing.