There are two reasons for negatives in measuring double-frequency induced polarization, one is electromagneticcouplingeffect, the other is geo-boby existing in an impersonal way.
The coupling of current, temperature and stress has been proposed in crack arresting by the electromagnetic heat effect at the moment when a pulse current is switched on.
讨论了电磁热裂纹止裂时脉冲放电瞬间的电流、温度和热应力的耦合关系。
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This paper analyzes the flywheel rotor's gyroscopic couplingeffect on the electromagnetic bearing and derives the motion equations of radial four-degree-of-freedom rotors.