| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for ultrasonic flaw detection which includes a less number of pulsers and receivers in comparison with the number of elements constituting an array sensor and make it possible to obtain high-resolution and high-S/N ratio results of flaw detection through imaging by driving a plurality of piezoelectric elements. Ž<P>SOLUTION: A sensor information setting part 102F sets a plurality of element groups (element clusters) for transmission and reception to a plurality of piezoelectric elements constituting an ultrasonic array sensor 101. A computer 102G transmits an ultrasonic wave from the element cluster for transmission, and stores an ultrasonic wave received by the element cluster for reception as a first receive signal; repeats a procedure for changing the element cluster for transmission and the element cluster for reception and storing another first receive signal; summing up the plurality of first receive signals obtained by repeating this procedure to obtain a second receive signal; and displays the second receive signal with reference to a center position on a display unit 103. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
