Robina H.C. Wong

TL;DR: In this paper, the authors investigated the crack coalescence and peak strength of rock-like materials containing three parallel frictional flaws and found that the failure mechanism strongly depends on the cracks coalescence pattern between pre-existing flaws.

TL;DR: In this paper, the authors investigated the pattern of crack coalescence and strength of a sandstone-like material containing two parallel inclined frictional cracks under uniaxial compression, with changing values of inclination of preexisting cracks α, bridge angle β (inclination between the inner tips of the two existing cracks), and the frictional coefficient μ on the surfaces of the preexexisting cracks.

TL;DR: Fornaro et al. as discussed by the authors presented experimentally obtained results for the coefficient of restitution for spherical boulders impacting on rock slopes and found that the normal component of the coefficients of restitution (R n ) increases with the slope angle α, which agrees with Wu's observations.

TL;DR: In this article, the authors investigate the microstructural basis for a statistical model of compressive failure in a brittle rock, and establish a methodology whereby the Weibull parameters can be inferred from micro-structural data on microcrack density and length statistics for input into finite element simulations.

TL;DR: In this paper, the effect of the initial crack density and grain size on the uniaxial compressive strength of fine and coarse-grained Yuen Long marbles was examined.