anisotropy

Technology study of elastic anisotropy of rocks to solve problems tectonofacing analysis

The texture analysis of acoustic technology, which is based on the petroacoustic research and consists of two parts: the experimental measurements of velocities of quasi-longitudinal and quasi-processing waves and interpretation of results are given. The method makes it possible to obtain detailed information about the anisotropy of elastic waves in rocks, the elastic symmetry and texture of rocks, a sequence of deformation and tectonic nature of the conditions of their formation and transformation, etc.

Application of the matrix method in inverse problems using real seismograms

Purpose. The aim of the research is to develop a methodology for determining local earthquake mechanisms which are registered by a limited number of stations, using real records. Methodology. Methods of the inverse problem solving for determining earthquake parameters are based on the results obtained by direct problem of seismic wave propagation in an anisotropic media using the method of Thomson-Haskell.

An automated system for data processing and analysis of ultrasonic measurements of velocity anisotropy of elastic waves in rocks

The creation of automated system for mathematical modelling of ultrasonic seismic parameters for diagnostics of processes of geological environment destruction is actual geoinformatics problem. The automated system for data processing of ultrasonic measurements of elastic wave anisotropic velocities in rocks are created, which has practical sense for study of rock-collectors anisotropy and the nature of geodynamic processes and paleoreconstruction of deformative history of Earth’s crust.

Low Field Nuclear Magnetic Resonance of Structural Alterations in Coal Tar Pitch Subjected to Heat Treatment

Development of anisotropy in tar pitches under heat treatment was measured by hot centrifugation and by low field NMR technique through the spin-lattice relaxation time of the hydrogen nucleus (T1H). By using a double exponential model for T1H calculations it was possible to quantify the size of the isotropic and anisotropic domains, suggesting that low field NMR is a suitable technique to address anisotropy in pitches.

Gradiently Anisotropic Conducting and Magnetic Polymer Composites

The character of the local electric resistance variations of film polymer composites on the basis of polyvinyl alcohol with graphite powder on the one hand and the magnetic susceptibility of the same polymer with nickel nano-particles on the other hand has been studied. It has been established that the changes of these parameters essentially depends on both initial shape of the films and on the direction of their orientation. It is concluded that the films of gradiently anisotropic polymer composites may be used in electronics.