Simulation of microcrack influence on temperature variations within geomaterials under deformation

A model of an elastic medium “specimen” is described. Dissipative elements of the model are presented by isolated closed disk cracks. Movement of the crack edges under varying stress state of the specimen is considered in the context of temperature variations on the specimen surface. The temperature variations in the specimen under uniaxial loading are estimated as functions of the crack radii and crack concentration. Comparison of the estimates with the experimental data makes it possible to conclude that they can be identified by the infrared radiometry methods. It is pointed out that this model is applicable to assessing the structural heterogeneity degree in geomaterials.