Resumen de Análisis de la fractura de rocas entalladas bajo diferentes condiciones de carga y de temperatura mediante criterios locales
This PhD thesis might be of interest in those fields concerned with rock fracture mechanics, such as civil engineering, mining engineering or energy engineering, for example. This work aims to respond to the general demand for specific tools and methodologies for the assessment of rock fracture of notched components, leaving aside the over-conservative application of ordinary fracture mechanics that have been traditionally used to deal with this problem.
In particular, the applicability of the Theory of Critical Distances (TCD) and the Strain Energy Density (SED) criterion in the field of rock mechanics is studied here, highlighting their advantages and limitations in rock-type materials. To do so, the focus is placed on the fracture behaviour of six rocks with different lithologies, under the presence of U-notch type defects with different radii and under different loading (mode I and mixed mode I+II) and temperature conditions up to 250ºC, which is a common temperature range in geothermal applications, for example.
