Deformation (meteorology)

Engineering

Geotechnical engineering

Materials science

Shear (geology)

Acoustic emission

Classical mechanics

Geology

Tensor (intrinsic definition)

Physics

Mathematics

Cracking

Geometry

Composite material

Moment (physics)

Structural engineering

Compression (physics)

Tension (geology)

Moment tensor

Engineering Fracture Mechanics

Acoustic Emission (AE) technique and moment tensor (MT) analysis were both applied to study the spatial–temporal evolution of micro-cracks of coarse-grained granite samples, containing a circular opening, which were subjected to uniaxial compression. The results show that AE locations are in agreement with the macroscopic fractures, observed on the surface of the granite specimens after the end of the experiments. Shear cracks are dominant as the ratio is more than 40% of the total number of events, tension cracks are fewer, since they accounted for more than 30% of the total events, and mixed-mode cracks represent a minimum proportion.

Moment tensor analysis of acoustic emission for cracking mechanisms in rock with a pre-cut circular hole under uniaxial compression