Ultrasonic test device

US5473943A · kind A · utility

Assignees

• Mannesmann AG · DE
• Krautkramer GmbH & Co. · DE

Inventors

• Manfried Schoenen · Mettmann, DE
• Harri Haacke · Ratingen, DE
• Hans-Jurgen Bathmann · Moers, DE
• Bernhard Karbach · Lechenich, DE
• Gerd Kauth · Neunburg vorm Wald, DE
• Reinhard Prause · Hürth, DE
• Ottokar Patzke · Lechenich, DE

Key dates

• Filing date: Feb 17, 1993
• Grant date: Dec 12, 1995
• Expiry date: Feb 17, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/044
• WIPO field: Measurement
• WIPO sector: Instruments

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.