Microcracks in Basalt and Tonalite at Friction

Experimental Study of the Mechanism of the Formation of Microdefects in Rocks when Exposed to High-Voltage Nanosecond Pulses

“…Microcracks can be present in a solid from ten beginning or form as a result of external actions. Much emphasis has recently been put on problems of the formation and propagation of microcracks in materials (including rocks, minerals, and ores) as a result of mechanical, physicochemical, electrochemical, thermal, electric pulse, and other energy impacts [6,[9][10][11][12][13][14]. The properties of microcracks in rocks and the mechanisms of their formation are studied by experimental means that include optical, electron, and scanning probe microscopy; X-ray microtomography; and acoustic emission [6,7].…”