Characterization of Fracture Process in Sandstone: A Linear Correspondence Between Acoustic Emission Energy Density and Opening Displacement Gradient

Published on Feb 1, 2020in Rock Mechanics and Rock Engineering4.14
· DOI :10.1007/S00603-019-01949-8
Qing Lin11
Estimated H-index: 11
(China University of Petroleum),
Siqi Wang4
Estimated H-index: 4
(China University of Petroleum)
+ 2 AuthorsYan Wang7
Estimated H-index: 7
(Iowa State University)
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Abstract The influences of mode II loading on fracture process in Berea sandstone were investigated by comparing mode I and mixed-mode fractures that were created by center and eccentric notch beams under three-point bending. Fracture process was characterized by Acoustic Emission (AE) and related energy. Experimental results show mode II loading does not affect the length of fully-developed fracture process zone and maximum value of AE energy. However, it affects the zone from reaching fully-de...
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