Elastic-Microplastic Transitions in Rocks during Low-Intensity Wave Propagation [Электронный ресурс]
статья в журнале
(ИНГГ СО РАН)
дата публикации: 2018
The field and laboratory acoustic experiments have been conducted for the study of nonstandard (microplastic) inelasticity in loam and siltstone. New data was obtained thanks to seismic/acoustic recording in the form of "the stress - time" with the microsecond resolution. Unusual inelastic manifestations represented in the form of stress plateau, the stress drop and the steepness decrease on wave front complicate wave form. The short-term discrepancy of the upward and downward stress course in some time interval is characterized as micro-hysteresis effect. The microplastic process influences the wave propagation, transforms its form and dynamic parameters. The observed effects depend on the magnitude of the applied dynamic stress. The discrete inelasticity plays an important part not only in wave dynamics but can exerts influence on global deformation processes in the Earth.
первоисточник: Athens Journal of Sciences