A numerical study of acoustic emission characteristics of sandstone specimen containing a hole-like flaw under uniaxial compression

For a better understanding of acoustic emission (AE) characteristics and failure mechanism of specimens containing hole-like flaw, a series of uniaxial compression tests are carried out by using the bonded-particle model (BPM). In the BPM, the AE simulation combined with moment tensor inversion is adopted. The results indicate that the stress drop in the stress–strain curve corresponds to a sudden increase of AE counts, which results from the...