Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Kazuhiro Ueshiro

Hiroshi Takemoto

Mitsuyoshi Uematsu

Yuki Tokita

Tadayoshi Kimura

An ultrasonic flaw detection device comprises a flaw detection unit for transmitting and receiving ultrasound, a swinging mechanism for supporting the flaw detection unit to swing around a swinging axis, and a locking mechanism for switching between a swinging state and a locked state. The ultrasonic flaw detection device controls the locking mechanism and swinging mechanism such that when the flaw detection unit is moved along a direction tangential to a surface to be inspected from a position removed from a first end part of the surface to be inspected to a lock release position, the flaw detection unit is put in the locked state such that a direction tangential to a contact surface and the direction tangential to the surface to be inspected coincide, and the flaw detection unit is switched from the locked state to the swinging state after the flaw detection unit reaches the lock release position.

Ultrasonic flaw detection device and method for controlling same

A portable ultrasonic testing device which with respect to a plate material having a chamfered surface formed between an outer plate surface and an inner peripheral surface, irradiates the chamfered surface with ultrasonic waves while moving along the chambered surface to thereby detect flaws in the plate material is provided with: a device frame; a probe which irradiates the chambered surface with the ultrasonic waves, and receives reflected ultrasonic waves; a wedge to which the probe is fixed and which is able to come into contact with the chamfered surface; a slide mechanism which moves the wedge in a sliding direction with respect to the device frame; a spring member which is urged in a direction in which the wedge and the chamfered surface approach each other in the sliding direction; and a movable roller and a pair of fixed rollers which are provided in the device frame and each have a rolling contract surface that is in contact with the inner peripheral surface.

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Tokyo, Japan

Kazuhiro Ueshiro