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Three-dimensional steering and focusing using an ultrasonic 2D-array - simulation and experiment

: Spies, M.; Rieder, H.; Didion, C.; Licht, R.; Santraine, B.; Gebhardt, W.


Thompson, D.O. ; American Institute of Physics -AIP-, New York:
Review of progress in quantitative nondestructive evaluation. 25B : Brunswick, Maine, 31 July - 5 August 2005; the 32th Annual Review of Progress in Quantitative Evaluation
Melville, NY: AIP, 2006 (AIP conference proceedings 820)
ISBN: 0-7354-0312-0
ISSN: 0094-243X
Annual Review of Progress in Quantitative Nondestructive Evaluation <32, 2005, Brunswick/Me.>
Fraunhofer IZFP ()
beam field; transducer; ultrasonic; array; focal law; imaging

A 16-by-16 element array is operated at a center frequency of 2.25 MHz using a 256-channel transmitter system. Reception is performed with a subset of elements of the array or with a separate single element probe. The beam fields generated in water have been simulated and compared to experiments with excellent agreement. 3D imaging of defects inside components has been addressed only by electronic steering and focusing to various depths of the inspected component.