# US 8,783,111 B2 · Ultrasonic testing probe and ultrasonic testing apparatus

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- Number: US 8,783,111 B2
- Document ID: US8783111B2
- Status: Granted
- Kind: B2
- Application number: 13/386,799
- Filed: 2010-08-12
- Published: 2012-05-17
- Granted: 2014-07-22
- Earliest claimed: 2009-08-21
- Assignees: Mitsubishi Heavy Industries, Ltd.
- Applicants: Hirotoshi Matsumoto; Masatsugu Shimizu; Kiyotaka Aoki; Shinichi Tsuji
- Inventors: Hirotoshi Matsumoto; Masatsugu Shimizu; Kiyotaka Aoki; Shinichi Tsuji
- Web page: https://patentgrep.com/patent/US8783111B2

## CPC

- G01N 29/043: {in the interior, e.g. by shear waves}
- G01N 29/11: by measuring attenuation of acoustic waves
- G01N 2291/0421: Longitudinal waves
- G01N 2291/056: Angular incidence, angular propagation
- G01N 2291/106: one or more transducer arrays
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

Provided are an ultrasonic testing probe and an ultrasonic testing apparatus capable of reducing the time required for flaw detection while maintaining the flaw-detection capability, irrespective of the shape of the inner surface of a tested object. A first probe (21) and a second probe (22) are provided, in each of which a plurality of oscillators that transmit ultrasonic waves to a tested object (T) and detect the ultrasonic waves reflected from the tested object (T) are arrayed. The first probe (21) is disposed closer to a flaw in the tested object (T) than the second probe (22) is. The first probe (21) generates longitudinal ultrasonic waves that propagate on an inner surface (T5) of the tested object (T) opposite to an outer surface (T2) thereof where the first probe (21) and the second probe (22) are disposed and transverse ultrasonic waves that propagate from the outer surface (T2) toward an inside of the tested object (T). The second probe (22) generates longitudinal ultrasonic waves that propagate on the outer surface (T2) and longitudinal ultrasonic waves that propagate from the outer surface (T2) toward the inside of the tested object (T).

## Claims

### Claim 1

An ultrasonic testing probe comprising:
a first probe and a second probe, in each of which a plurality of oscillators that transmit ultrasonic waves to a tested object and detect ultrasonic waves reflected from the tested object are arrayed,
wherein the first probe is disposed closer to a flaw in the tested object than the second probe is,
the first probe generates longitudinal first ultrasonic waves that propagate on an inner surface of the tested object opposite to an outer surface thereof where the first probe and the second probe are disposed and transverse second ultrasonic waves that propagate from the outer surface toward an inside of the tested object,
the second probe generates longitudinal third ultrasonic waves that propagate on the outer surface and longitudinal fourth ultrasonic waves that propagate from the outer surface toward the inside of the tested object,
the first probe detects reflected waves of the longitudinal third ultrasonic waves and reflected waves of the longitudinal fourth ultrasonic waves, and
the second probe detects reflected waves of the longitudinal first ultrasonic waves and reflected waves of the transverse second ultrasonic waves.

### Claim 2 (depends on 1)

An ultrasonic testing apparatus comprising:
an ultrasonic testing probe according to claim 1; and
a transmitting section that controls a transmission timing of ultrasonic waves from the plurality of oscillators of the first probe and the plurality of oscillators of the second probe.