B8.3 - Design and Fabrication of a 5 MHz Concave Phased Array Probe
- AMA Conferences 2013
2013-05-14 - 2013-05-16
- Proceedings SENSOR 2013
- B8 - Sensor Production
- J. Fischer, T. Herzog, S. Walter - Fraunhofer IZFP-D, Dresden (Germany)
- 328 - 331
A 5 MHz, 16-element phased array concave ultrasonic probe for non-destructive testing has been designed, fabricated and tested. To improve the probe’s performance its curvature, as opposed to present solutions, was not obtained by adding a corresponding delay wedge, but rather by manufacturing the functional elements (i.e. active material, matching layer) with a curvature. The piezoelectric material used here was a 1-3 composite material.
The finished probe was tested on a steel half circle with the corresponding radius (100 mm) and on the Olympus PAUT test piece. Good results could be obtained. Three transverse holes with a diameter of 1 mm and a distance of 5 mm to one another could be detected and resolved.