M. Johansmann and G. Wirth, Polytec GmbH, Germany
An experimental verification of an ultrasonic transducer or ultrasonic tool is an important design step. In this chapter we discuss laser Doppler vibrometry, which is an established experimental method for non-contact measurement of the transducer vibration amplitude and other properties. Basic measurements on a single test point are discussed as well as scanning entire surfaces and special technologies for ultra-high frequencies and for micro-structure devices.
laser Doppler vibrometry
scanning laser Doppler vibrometry