US 5,473,943 AGranted

Ultrasonic test device

AssigneesMannesmann Aktiengesellschaft, Krautkramer GmbH & Co.

InventorsManfried Schoenen, Harri Haacke, Hans-Jurgen Bathmann, Bernhard Karbach, Gerd Kauth, Reinhard Prause, Ottokar Patzke

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Abstract

The invention is directed to a u/s test device for nondestructive testing of a workpiece moving relative thereto by the pulse echo method, having a fluid coupling between the ultrasonic oscillator and the surface of the work material. At least two test heads are provided whose sound beam axes intersect at a point in the region of the workpiece and a travel path in the form of a chamber is provided for guiding the fluid medium. To reduce susceptibility to interference and to achieve high test performance, a separately guided travel path extending along a determined length of the chamber and forming a duct (12-20) is associated with each test head (1-9), the axes of the travel path being aligned with the respective sound beam axis.

Claims12

Dependent claims

An ultrasonic test device for the nondestructive testing of a workpiece moving relative thereto based on the pulse echo method with coupling by means of a fluid medium between the ultrasonic oscillator and the surface of the workpiece, said ultrasonic test device comprising:

a first test head carrier;
at least two test heads disposed in said carrier, each said test head having a sound beam axis, said axes intersecting at a point in the region of the work piece;
a chamber common to all test heads for guiding the fluid medium, said chamber having an outlet opening facing the surface of the workpiece and being connected with said test head carrier;
a guide element constructed so as to correspond to the contour of the workpiece and being connected with said test head carrier;
and
a separate duct forming a travel path (12-20) associated with each of said test heads (1-9), each said separate travel path having an axis and extending along a determined length of said common chamber, the axis of each of said travel paths being aligned with a respective one said sound beam axis.

3 more elements

Dependencies are inferred from the claim text.