Abstract
Specimens of granite were exposed to uniaxial compression and impacted by a dropped weight in order to obtain time sequences of acoustic emission signals generated due to micro-cracking. Time resolution in the impact fracturing was 10 ns. Both under compression and impact, the macroscale failure stage was preceded by micro-scale damages accumulation stage. The accumulation stage duration under compression is far much longer than the failure stage, while the situation is opposite in case of failure under impact.
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Original Russian Text © I.P. Shcherbakov, V.S. Kuksenko, A.E. Chmel’, 2012, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2012, No. 4, pp. 78–82.
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Shcherbakov, I.P., Kuksenko, V.S. & Chmel’, A.E. Acoustic emission accumulation stage in compression and impact rupture of granite. J Min Sci 48, 656–659 (2012). https://doi.org/10.1134/S1062739148040090
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DOI: https://doi.org/10.1134/S1062739148040090