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AssigneeHitachi, Ltd.
InventorsNaoyuki Kono, Tetsuya Matsui, Masahiro Koike, Masahiro Tooma, Yoshinori Musha, Masahiro Miki
Estimating the term…
In order to make it possible in ultrasonic flaw detection to generate ultrasonic waves containing a main beam only by use of an array probe and clearly identify a defect in a specimen by use of images, an element pitch P (the distance between centers of adjacent ultrasonic transducer elements in the array probe) is set longer than ¼ of the wavelength of longitudinal waves generated by the ultrasonic transducer elements and shorter than ½ of the wavelength and reception signals up to time corresponding to the sum of wall thickness round-trip propagation time for longitudinal waves and wall thickness round-trip propagation time for shear waves in the specimen are displayed.
An ultrasonic flaw detection method according to a phased array technique employing an array probe including an array of transducer elements, wherein;
An ultrasonic flaw detector employing an array probe including an array of transducer elements and operating according to a phased array technique,
Dependencies are inferred from the claim text.