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http://dx.doi.org/10.12989/gae.2017.12.1.001

Determination of spalling strength of rock by incident waveform  

Tao, Ming (School of Resources and Safety Engineering, Central South University)
Zhao, Huatao (School of Resources and Safety Engineering, Central South University)
Li, Xibing (School of Resources and Safety Engineering, Central South University)
Ma, Jialu (Institute of Engineering mechanics, China Earthquake Administration)
Du, Kun (School of Resources and Safety Engineering, Central South University)
Xie, Xiaofeng (School of Resources and Safety Engineering, Central South University)
Publication Information
Geomechanics and Engineering / v.12, no.1, 2017 , pp. 1-8 More about this Journal
Abstract
An experimental technique for determining the spalling strength of rock-like materials under a high strain rate is developed. It is observed that the spalling strength of a specimen can be determined by only knowing the wavelength, loading peak value and length of the first spallation of an incident wave under a specific loading waveform. Using this method in combination with a split-Hopkinson pressure bar (SHPB) and other experimental devices, the spalling strength of granite specimens under a high strain rate is tested. Comparisons with other experimental results show that the new measuring method can accurately calculate the dynamic tensile strength of rock materials under a high strain rate.
Keywords
Hopkinson bar; spalling; incident waveform; dynamic tensile strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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