The energy balance of the fracture process in certain rocks
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The authors have calorimetrically determined the energy emitted in the process of mechanical fragmentation of a solid. The difference between this and the energy supplied to the fragmented system is equal to the energy accumulated in the fragmented material.
There is found to be a linear relation between the energy irreversibly accumulated in the broken rock and bit and the energy supplied to the system which breaks the material. The same relation is established between the accumulated energy and the energy emitted in the form of heat during the fragmentation process, which can be measured calorimetrically.
Solutions are found for the problem of determining experimentally the work required to form unit surface area for isotropic solids of complex composition.
KeywordsDrilling Calorimeter Drilling Depth Break Rock Aluminum Cylinder
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