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vol 67 / February, 2024
Article

DOI 10.17586/0021-3454-2020-63-7-673-681

UDC 519.7

DETERMINATION OF MECHANICAL AND ACOUSTIC CHARACTERISTICS OF BRITTLE MATERIALS AT VARIOUS RATES OF SAMPLES LOADING

E. A. Tarasenko
St. Petersburg Polytechnic University, Higher School of Engineering;


Y. Zhuang
Peter the Great St. Petersburg Polytechnic University, Higher School of Mechanical Engineering;


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Abstract. Mechanical properties and characteristics of acoustic emission of brittle materials under various loading rates are studied. Based on performed theoretical analysis and data obtained during testing of samples of cast iron, coal, and concrete, graphs of the time dependence of stress-strain and acoustic characteristics of the samples are plotted. The mechanical strength and deformation of samples, as well as acoustic emission parameters, are compared with the loading rate. The analysis of mechanical prop-erties and acoustic characteristics of samples provides information that can be used in engineering cal-culations.
Keywords: brittle materials, sample compression test, acoustic emission method, mechanical properties

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