Non-destructive Inspection Company Limited.

Independent Administrative Institution Japan Aerospace Exploration Agency

Norio Nemoto

Hiroshi Miyamoto

Shigeyuki Matsubara

Hideki Yabushita

Tatsuyuki Nagai

An ultrasonic wave propagating method capable of propagating plate waves between a probe and a test piece despite variations in the thickness or the surface angle of a test piece, and an ultrasonic propagating device and an ultrasonic testing device using this method. Ultrasonic waves are propagated between a probe () for transmitting or receiving ultrasonic waves and a test piece () for propagating plate waves. When propagating ultrasonic waves, a probe that can set an ultrasonic wave incident angle from the probe () to the test piece () and/or an ultrasonic wave receivable angle from the test piece to the probe in a plurality of states is used. A focal point type probe may be used as the above probe (). When this type of a probe is used, it is oriented such that an oscillating direction axis Lin the direction of which a reference axis along the propagation route of ultrasonic waves is oscillated around the focal point of the probe crosses the propagation element surface Lincluding the test piece surface of a ultrasonic wave propagation element.

Ultrasonic wave testing method and ultrasonic testing device using this method

An ultrasonic wave is sent from a transmission element to a test element to produce a plate wave in the test element, and the plate wave propagating through the test element is received by a reception element to thereby test the test element on the propagation route of the plate wave. The other probe that is the other reception element or transmission element is disposed between the transmission element and the reception element. A probe holding mechanism that has support legs contacting the surface of the test element and keeps constant an angle of the other probe with respect to the surface of the test element is allowed to support the other probe. And, the other probe is allowed to cross over in non-contact the propagation route of the plate wave extending from the transmission element to the reception element by means of support legs.

Growing community of inventors

Ibaraki, Japan

Norio Nemoto