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Resonance-free measuring and excitation of ultrasound

  • In this contribution we present innovative methods for broadband and resonance-free sensing and emitting of ultrasound. The sensing method uses a polyethylene foil and a laser vibrometer as a broadband and resonance-free sound receiver. In general, this method enables absolute measurement of sound particle velocity and sound pressure in arbitrary, laser beam transparent liquids and gases with known density and sound velocity. The resonance-free emitting method is based on the electro-thermo-acoustic principle and enables, contrary to conventional ultrasound transducers, generation of arbitrary shaped acoustic signals without resonances and post-oscillations.

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Author:Maxim DaschewskiGND, Marc Kreutzbruck, Jens Prager, Elmar Dohse, Mate Gaal, Andrea Harrer
ISSN:0171-8096 (print)
Parent Title (German):Technisches Messen : tm ; Plattform für Methoden, Systeme und Anwendungen der Messtechnik
Publisher:De Gruyter
Place of publication:Berlin
Document Type:Article
Year of first Publication:2015
Year of Completion:2015
Release Date:2017/03/27
Tag:Ultrasound; characterization of ultrasonic measurement systems; thermo-acoustic ultrasound emitter; transfer function
First Page:156
Last Page:166
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert