초록 ▼

An ultrasonic probe for inspecting a weld between a cylinder (C) and a pipe (P) is caused to move in a holder at the end of an arm (11) pivoted at a point on the axis (Z) of the pipe so that the line (12) of transmission from probe penetrates the weld and, when projected beyond the weld, intersects

An ultrasonic probe for inspecting a weld between a cylinder (C) and a pipe (P) is caused to move in a holder at the end of an arm (11) pivoted at a point on the axis (Z) of the pipe so that the line (12) of transmission from probe penetrates the weld and, when projected beyond the weld, intersects the axis (Z) of the pipe (P) for all positions of the arm.

대표청구항 ▼

Apparatus for projecting a beam of ultrasonic energy into a body having a curvilinear contour, said apparatus comprising a probe for producing said beam; a probe holder carrying the probe and presenting the probe for contact with said body; means for mounting the probe holder and traversing the prob

Apparatus for projecting a beam of ultrasonic energy into a body having a curvilinear contour, said apparatus comprising a probe for producing said beam; a probe holder carrying the probe and presenting the probe for contact with said body; means for mounting the probe holder and traversing the probe holder over said body with the probe in contact with said curvilinear contour; said probe holder comprising: (a) a ball element carrying the probe; (b) gimbal means comprising a U-shaped inner frame having side legs between which the ball element is located and a U-shaped outer frame having side legs between which the inner frame is located; (c) first pivot means interconnecting the ball element with the side legs of the inner frame; (d) second pivot means interconnecting the side legs of the outer frame with the mounting means, said first and second pivot means defining respective first and second axes which are mutually orthogonal with respect to one another; (e) third pivot means interconnecting the inner and outer frames whereby the inner frame is movable angularly relative to the outer frame about a third axis perpendicular to said first and second axes; and means for mechanically linking said outer frame and the ball element and operable automatically, in response to angular movement of said ball element about said first and second axes as the ball element traverses over said curvilinear contour, to effect compensating angular movement of the ball element about the third axis whereby a predetermined relationship between the direction of said beam and the mounting means is maintained.