Method for the non-destructive ultrasound examination of a...

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G01N 29/26 (2006.01) G01N 29/04 (2006.01) G01N 29/06 (2006.01)

Patent

CA 2588955

The invention relates to a method for the non-destructive examination of a test body by means of ultrasound, whereby ultrasound waves are injected into the test body by means of one or more ultrasound transducers and ultrasound waves reflected inside the test body are received by a plurality of ultrasound transducers and are converted to ultrasound signals. The ultrasound signals are detected in individual measurement intervals and are stored individually and are accessible to offline evaluation after termination of the measurements. The inventive method allows to subsequently synthesize any acoustic irradiation angle and focusing in the physically possible volume range of the test body from the stored ultrasound signals by using corresponding reconstruction algorithms, thereby eliminating the need for additional ultrasound measurements.

L'invention concerne un procédé pour l'examen non destructif d'un échantillon au moyen d'ultrasons. Selon ce procédé, des ondes ultrasonores sont injectées dans l'échantillon par un transducteur ultrasonore ou par une multitude de transducteurs ultrasonores et les ondes ultrasonores réfléchies à l'intérieur de l'échantillon sont reçues par une multitude de transducteurs ultrasonores et sont converties en signaux ultrasonores. Les signaux ultrasonores collectés lors de différents cycles de mesure sont stockés individuellement et sont accessibles pour une évaluation hors ligne une fois les mesures achevées. Grâce à l'utilisation d'algorithmes de reconstruction correspondants, il est ainsi possible de synthétiser après coup, à partir des signaux ultrasonores stockés, des angles de réfraction et des focalisations quelconques dans la zone de volume physiquement réalisable de l'échantillon, et ce sans que des mesures ultrasonores supplémentaires soient nécessaires.

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