Dynamic Electrical-Mechanical Energy Coupling in Electrolyte-Mineral Systems
byJ. Carlos Santamarina And Dante O. Fratta
Santamarina, J. C. and Fratta, D. (2002). "Dynamic Electrical-Mechanical Energy Coupling in Electrolyte-Mineral Systems." Transport in Porous Media, Vol. 50, pp. 153-178
Electrical-mechanical and mechanical-electrical coupling phenomena have been observed in geo-materials. Underlying internal phenomena are not always clear. In this paper, we identify potential microscale processes on the bases of previously published research; fundamental physical principles and analytical models are included. Second, we notice important inconsistencies between theoretically predicted values or high-frequency laboratory data with respect to low-frequency field observations. To explore these differences, we conduct a laboratory experimental study that simulates field conditions, placing emphasis on low frequency coupling, that is, less than 10 kHz. Both, mechanical-electrical and electrical-mechanical effects are observed. Finally, hypotheses are presented in an attempt to explain observed differences.