Abstract
The configurations of a small-diameter 27 kHz ultrasonic complex vibration source using a (1,1)-mode transverse vibration disk with four bolt-clamped Langevin-type piezoelectric ceramic (PZT) transducers (BLTs) 40 mm in diameter is developed and studied. The vibration source is driven using two power amplifier systems and a circular vibration locus is obtained at a welding tip. A vibration amplitude of 8.5 µmp–0 (peak-to-zero value) is obtained at a driving voltage of 50 Vrms.
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