Independent Administrative Institution Japan Aerospace Exploration Agency

Non-destructive Inspection Company Limited.

Mitsubishi Heavy Industries Limited

Shigeyuki Matsubara

Hiroshi Miyamoto

Hideki Yabushita

Tatsuyuki Nagai

Norio Nemoto

Hideki Horizono

Masayuki Kanemasu

Kunihiko Shinoda

Hirotoshi Hujigaki

Susumu Ryuuou

Makoto Shirai

A nondestructive inspection apparatus according to the present invention has a transmission-side probe configured to emit a first ultrasonic wave toward a test-target fluid, a plate through which a Lamb wave generated by the first ultrasonic wave is propagated when the first ultrasonic wave is propagated, and a reception-side probe configured to measure intensity of a second ultrasonic wave which is emitted from the plate and propagates through the test-target fluid. At this time, the nondestructive inspection apparatus can inspect the test-target fluid without bringing the transmission-side probe configured to emit the first ultrasonic wave and the reception-side probe configured to measure the second ultrasonic wave into contact with the test-target fluid.

Apparatus and method for nondestructive inspection

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.

Ultrasonic testing method and ultrasonic testing device using this

An ultrasonic test method for detecting a defective portion more precisely in a noncontact reflection way, and ultrasonic test instrument used for the method. An ultrasonic wave is transmitted from a transmitter (()) provided on one side of an object under test, and the reflected wave is received by a receiver (()) provided on the same side. The ultrasonic wave is transmitted/received through an air layer between the transmitter and the object () under test and between the receiver and the object (). The relative positions of the transmitter (), the receiver (), and the object () are so determined that the air propagation time ta of the air path (RA) between the transmitter and the receiver is longer than the propagation time tb of the reflected wave in the reflection path (RB). The propagation of the ultrasonic wave through the solid body between the transmitter and the receiver is blocked. This invention is suitable to test laminated material () such as a laminate of CFRP () and insulation () in a noncontact way.

Ultrasonic test method and ultrasonic test instrument used for the method

Growing community of inventors

Osaka, Japan

Shigeyuki Matsubara