TY  - JOUR
A1  - Daschewski, Maxim
A1  - Kreutzbruck, Marc
A1  - Prager, Jens
A1  - Dohse, Elmar
A1  - Gaal, Mate
A1  - Harrer, Andrea
T1  - Resonance-free measuring and excitation of ultrasound
JF  - Technisches Messen : tm ; Plattform für Methoden, Systeme und Anwendungen der Messtechnik
N2  - 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.
KW  - Ultrasound
KW  - transfer function
KW  - characterization of ultrasonic measurement systems
KW  - thermo-acoustic ultrasound emitter
Y1  - 2015
U6  - https://doi.org/10.1515/teme-2014-0020
SN  - 0171-8096
VL  - 82
IS  - 3
SP  - 156
EP  - 166
PB  - De Gruyter
CY  - Berlin
ER  -