Effect of the conductance and thickness of a conducting plate on the signal from a material-velocity inductive transducer (Q2714064)

The perturbation problem is considered of the magnetic field of a constant-current turn located above a conducting plate set into motion by a plane shock wave with a rectangular profile. It is shown that not only the velocity of the plate but also its dynamic conductivity can be determined on the basis of the electromotive force of induction recorded by means of the turn. For the case in which the conductance of the plate is known both for the conducting half-space and for a plate whose thickness is comparable with the skin-layer thickness, approximate calculated dependencies for the velocity of the plate are obtained. A comparison with experimental data and the clarification of the calculated dependencies make it possible to conclude that the approaches proposed can be used for determining the conductance of metals in shock-wave processes.