P1.6 - Development of Bending-Type Ultrasonic Transducers with Rotational Symmetry
- Event
- SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg - Band
- Proceedings SENSOR 2009, Volume II
- Chapter
- P1 - Mechanical Sensors
- Author(s)
- M. Rabl, M. Jungwirth, P. Zeller - Upper Austria University of Applied Sciences, Wels, Austria
- Pages
- 247 - 252
- DOI
- 10.5162/sensor09/v2/p1.6
- ISBN
- 978-3-9810993-5-5
- Price
- free
Abstract
Ultrasonic sensors are commonly used for a wide variety of non-contact presence, proximity or distance measuring applications in industry, especially the automotive branch. This paper shows how the radiation properties of bending-type ultrasonic transducers with rotational symmetry depend on shape, dimensions and especially on material parameters. In order to determine their dependencies, the behaviour of such transducers with regard to their emitting characteristics in air was simulated using a finite element (FE) method for computing their surface elongation together with analytical elementary wave superposition. The results of the simulations have been validated by Laser Doppler Velocimetry (LDV) and angulardependent acoustic pressure measurements.