Electromagnetic excitation of elastic vibrations

Ya. A. Krikun - Yu. G. Kuksa - A. E. Mikel'son - V. D. Mikhailenko - V. A. Rezvitskii - Z. D. Chernyi

Abstract
A metal crucible filled with transformer oil was used as a model in a study of elastic vibrations. Measurements were carried out of (1) the oil pressure as a function of frequency, (2) the resonance characteristics and the radial pressure distribution in the crucible, and (3) the oil pressure as a function of constant and alternating magnetic fields. It was found that the ultrasonic oil pressure at resonance frequencies was much higher than at other frequencies. The resonance linewidth was very small (30-400 Hz) and increased with increasing frequency. The resonance ultrasonic pressure had its lowest value near the crucible wall and the highest value at the center. It was found to increase linearly with both constant and alternating magnetic fields.