Využití deterministických fázových změn v horninových materiálech pro jejich selektivní narušování kapalinovými paprsky.

Abstract

The doctoral thesis is focused on assessing whether it is possible to contribute to degradation of the rock-type materials through the phase changes. These changes should be reflected during the creation and applications of abrasive water jets. I also focused on researching some non-traditional methods of initiating phase changes, which is the application of a high-frequency electromagnetic field of high energy density produced by Tesla coils and devices that use them. I took advantage of the possibilities provided by my current employer and applied, in addition to the usual sources, a high-energy impulse of electromagnetic radiation, which simulates the creation of an electromagnetic pulse during a nuclear explosion, to find out the possibility of obtaining faults in a rock-type material that could be caused by internal phase changes. The results show that this impulse causes certain disturbances in the tested samples. However, these disturbances are less significant compared to those caused by high-temperature heating or cyclic temperature changes, especially on rock materials (granite). Other rock-type materials, concrete or fireclay ceramics, can behave in a more or less different way due to their higher non-homogeneity.