Title :
Method for curvature measurements with ultrasound
Author :
Kühnicke, E. ; Lenz, M. ; Sorber, J. ; Gerlach, G. ; Trier, H.G.
Author_Institution :
Inst. fur Festkorperelektronik, Tech. Univ. Dresden, Dresden
Abstract :
The non-scanning measurement of the local curvature radius is a novel measurement method in ultrasound technology. The basic idea is to use the knowledge of the reflected sound field to characterize the reflector. This is realized by means of a focusing technique and the measurement of the sound field distribution on the receiver. The simulations show that in theory an accuracy of the radius measurement of up to 99% is possible with the suggested transducer configuration. The configuration enables the measurement of ball radii in the range of 10 mm. First measurements confirm the expected effects qualitatively.
Keywords :
curvature measurement; ultrasonic measurement; ultrasonic reflection; local curvature radius; nonscanning measurement; receiver sound field distribution; reflected sound field; reflector characterisation; ultrasounic curvature measurement method; Acoustic propagation; Acoustic reflection; Acoustic transducers; Geometry; Green´s function methods; Interference; Optical reflection; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement; GREEN´s function; Ultrasound curvature measurement; annular array; focusing; sound field;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0017
