Fracturing behavior around a blasthole in a brittle material under blasting loading

TL;DR: In this paper, the authors investigate the interaction mechanism between cracks and show that the local stress field significantly superposes when the distance between the two opposite propagating cracks is within a critical distance, resulting in an increase in both the dynamic stress intensity factors and the crack velocities during the crack interactions.

TL;DR: In this article , a cylindrical specimen with a central borehole fitted with a detonation cord inside a copper pipe was confined using lead material, and acceleration histories were recorded using sensors placed on the lead confinement.

TL;DR: In this paper , the role of confining stress and discontinuity on the dynamic responses and damage mechanism of rock masses was explored using the dynamic finite element method and a series of numerical models were subsequently developed.

TL;DR: In this paper, a cooperative model based on a strain rate/temperature superposition principle was proposed for compressive yield stress analysis of polycarbonate, polymethylmethacrylate, and polyamideimide.

TL;DR: The United Nations Recommendations on the Transport of Dangerous Goods as discussed by the authors have been used for safety in the production of explosive goods and have been adopted by the International Organization for Standardization (IOS).

TL;DR: In this article, the role of stress wave and gas pressure in the fragmentation of an underground blast was clarified by separating the two principal blast forces analytically and experimentally in the zone immediately around the borehole.

TL;DR: In this paper, a split Hopkinson tension bar was modified for the dynamic tensile stress-strain behavior of the low-strength and low-mechanical-impedance specimens.