Experimental Research into Thermomechanical Effects at Linear and Nonlinear Deformation Stages in Rock Salt Specimens under Cyclic Loading
V. I. SHEININ1, D. I. BLOKHIN1,2, I. B. MAKSIMOVICH1, E. P. SARANA1
1Gersevanov Research Institute of Bases and Underground Structures, 2-ya Institutskaya ul. 6, Moscow, 109428 Russia
2National University of Science and Technology-MISIS, Leningradskii pr. 4, Moscow, 119049 Russia
Keywords: геоматериалы, каменная соль, циклическое нагружение, осевые напряжения, осевые деформации, инфракрасное излучение, геомеханический мониторинг, geomaterials, rock salt, cyclic loading, axial stress, axial strain, infrared radiation, geomechanical monitoring
Abstract
The authors discuss capabilities of taking information on mechanical processes in geomaterials under post-limiting elastic deformation based on variation in IR radiation intensity. Experimental results on recording of heat emission from specimens of rock salt exposed to cyclic loading by uniaxial compression are reported. It is concluded that thermomechanical effects are useful in recording of onset of failure activation in geomaterials under cyclic loading.
|
