Fracture initiation in cavity expansion of rock
Volume: 85, Pages: 84 - 91
Published: May 1, 2016
Abstract
Initiation of fracture from a cylindrical opening in blocks of Berea sandstone under plane strain was monitored with a cavity expansion apparatus. Using the particle tracking technique called digital image correlation, a discontinuity in the displacement field near the cavity boundary was identified at 80% of the peak internal pressure, which meant that a process zone developed prior to peak. To investigate the effect of scaling on fracture, a...
Paper Details
Title
Fracture initiation in cavity expansion of rock
Published Date
May 1, 2016
Volume
85
Pages
84 - 91
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