ELECTROMAGNETIC/ULTRASONIC PROBE, ULTRASONIC FLOW DETECTOR, AND ULTRASONIC FLAW DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an electromagnetic/ultrasonic probe easy to be manufactured and using a solenoid coil.;SOLUTION: The electromagnetic/ultrasonic probe A is equipped with a cylindrical permanent magnet 1 magnetized in the diametric direction from its outer peripheral surface to its inner peripheral surface and the coil 2 wound centering around the circumferential axis of the permanent magnet 1. The electromagnetic/ultrasonic probe B is equipped with at least one arcuate permanent magnet 1 magnetized in the diametric direction from its outer peripheral surface to its inner peripheral surface, and the coil 2 wound centering around the circumferential axis of the permanent magnet 1 and the electromagnetic/ultrasonic probe C is equipped with at least one permanent magnet magnetized in the diametric direction from its outer peripheral surface to its inner peripheral surface and the coil 2 wound centering around the axis in the direction orthogonal to the magnetizing direction of the permanent magnet. A plurality of the permanent magnets 1 are arranged circumferentially along the surface of piping 3. The ultrasonic flaw detection device/method is equipped with a plurality of electromagnetic/ultrasonic probes A, B and C, and a part of the electromagnetic/ultrasonic probes A, B and C may be used for the transmission of an ultrasonic wave and other probes are used for the reception of the ultrasonic wave.;COPYRIGHT: (C)2010,JPO&INPIT