Xuan Feng, Cai Liu, Michael Fehler, Stephen Brown, Daniel Burns, James Tencate, Thomas L. Szabo
Abstract:We propose a dynamic method to detect the nonlinear elastic hysteretic characteristics of rock. The method is easily implemented and requires injecting two co-propagating longitudinal waves into the rock and receiving them. One of the waves is a high energy low-frequency longitudinal wave that loads strain in the rock, and a other is the low energy high-frequency longitudinal wave that is used to detect the elastic modulus variation induced by the loaded strain. Analyzing the relationship between elastic modul…
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