ANALYSIS OF POWER ULTRASONIC COMPONENTS USING SHEARING INTERFEROMETRY

The design and analysis of high power ultrasonic machining components have previously relied on empirical calculations and simple, ineffecti ve experimentation. The advent of the laser has provided a wide range of non-contact point source and whole-field measuring techniques, by w hich the behaviour of such ultrasonic components can be assessed. Spec kle pattern shearing interferometry is used to analyse the out-of-plan e vibration components of an ultrasonic blockhorn under laboratory and production line operating conditions. It is shown that continuous wav e and pulsed-laser illumination may be used to produce subtraction cor relation fringe patterns, depicting the first longitudinal vibration m ode at 20 kHz. Copyright (C) 1996 Elsevier Science Ltd.