Ultrasonic flaw detecting method and ultrasonic flaw detector

Details Ultrasonic flaw detecting method and ultrasonic flaw detector Ultrasonic flaw detecting method and ultrasonic flaw detector

2006-08-22

2006-08-22

Williams, Hezron (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S626000

Reexamination Certificate

active

07093490

ABSTRACT:
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.

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