ULTRASONIC WAVE MEASURING METHOD AND ULTRASONIC WAVE MEASURING DEVICE

A measuring-point setting unit 51 sets an arbitrary measuring point near a weld portion inside of steel material and assumes a virtual reflecting surface that includes the measuring point and is parallel to a weld line direction. An array-control calculating unit 52 transmits ultrasonic waves of a s...

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Bibliographische Detailangaben
Hauptverfasser:	IIZUKA, Yukinori, OZEKI, Takafumi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A measuring-point setting unit 51 sets an arbitrary measuring point near a weld portion inside of steel material and assumes a virtual reflecting surface that includes the measuring point and is parallel to a weld line direction. An array-control calculating unit 52 transmits ultrasonic waves of a shear wave mode satisfying an arbitrary expression and focusing onto the measuring point via a coupling medium at a predetermined incident angle with respect to the virtual reflecting surface. An echo-height extracting unit 53 detects reflected waves of the transmitted ultrasonic waves at a boundary between a base metal portion and the weld portion. A controller 5 evaluates the shape of the weld portion based on the reflected waves.