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Dynamic fracture of rocks under high rate mechanical and electric breakdown induced loads

Acronimo STP

Abstract The project will be focused on studies of behavior and specifically fracture of rock materials subjected to dynamic high-rate loading conditions. The study will give a possibility for better understanding of mechanism underlying fracture and pre-fracture processes undergoing intensive dynamic deformation. One of the planned experiment types includes studies of rock materials fractured by electric discharges close to the interface between a rock and a dielectric liquid media. Theses study may have different important industry applications. One of possible practical examples is to start an oil well that is not producing oil due to a paraffin plug. In another experiments same rocks will be tested in dynamic tension experiments. The theoretical part will include development of a model predicting critical conditions leading to fracture in rock media with a single parameter responsible for ?temporal dependence of fracture? that can be measured in any of these experiments. This will give a possibility to predict the behavior of rock materials in rather complex loading conditions based on material parameters evaluated in much simpler experimental conditions

Enti SUPSI coinvolti Laboratorio SUPSI Dynamat

Persone coinvolte Gianmario Riganti, Daniele Forni, Nicoletta Tesio, Matteo Dotta

Responsabili Ezio Cadoni

Data di inizio progetto 15 maggio 2013

Data di chiusura progetto 31 dicembre 2016