3.3.4 Noninvasive measurement of pressure fields arising from arbitrarily-shaped ultrasound transducers
- 16. GMA/ITG-Fachtagung Sensoren und Messsysteme 2012
2012-05-22 - 2012-05-23
- 3.3 Ultraschallmesstechnik
- L. Chen, S. Rupitsch, R. Lerch - Friedrich-Alexander-Universität Erlangen
- 361 - 367
This paper describes an optical method enabling noninvasive measurement of ultrasound pressure fields underwater. The pressure field arising from a cylindrically focused ultrasound transducer is measured by means of the optical method and a hydrophone. Good agreement has been achieved between the results obtained by these two different methods. After that, the technique is applied on the reconstruction of density change induced by the ultrasound in a PMMA cuboid. The result seems quite plausible, but a quantitative verification is still not possible. Because, so far as we know, no other published experiments have succeeded in the measurement of density change in solid induced by ultrasound.