SYSTEM AND METHOD FOR THE NONDESTRUCTIVE TESTING OF ELONGATE BODIES AND THEIR WELDBOND JOINTS

• US 20090167298A1
• Filed: 03/09/2007
• Published: 07/02/2009
• Est. Priority Date: 03/10/2006
• Status: Active Grant

• Current Assignee: Bundesanstalt FüR Materialforschung und -Prã¼Fung, European Advanced Superconductors GmbH & Co. KG., Institut Fur Photonische Technologien E.V.
• Original Assignee: European Advanced Superconductors GmbH & Co. KG., Institut Fur Photonische Technologien E.V., M Bundesanstalt FUER Materialforschung UND- Pruefung
• Inventors: Allweins, Kai, Eidmann, Gunnar, Kreutzbruck, Marc, Mattheis, Roland
• Granted Patent: US 8,274,276 B2
• Time in Patent Office: Days
• US Class Current: 324/235
• CPC Class Codes: G01N 27/9006 Details, e.g. in the structure or functioning of sensors

Abstract

An arrangement for testing an elongated body 1 or a welded and bonded joint in the body for faults 60 has a device 4, 5 for production of an eddy current in the elongated body 1 or its welded and bonded joint. At least one magnetic field sensor 7 for sensing the magnetic field is provided on the elongated body 1 or the welded and bonded joint. The dimensions of the at least one magnetic field sensor 7 are equal to or less than the fault 60 to be investigated.

Claims

1-81. -81. (canceled)

82. An arrangement designed for testing a wire or a welded or bonded joint in the wire for faults, by means of a device for production of an eddy current in the wire or the welded or bonded joint, and at least two magnetic field sensors for sensing the magnetic field on the wire or the welded or bonded joint, wherein the at least two magnetic field sensors are located symmetrically with respect to one another, with respect to a cross-sectional center point of the wire.

92. A method for testing a wire or a welded or bonded joint in the wire for faults, in which a current is produced in the wire or the welded or bonded joint and the magnetic field on the wire or the welded or bonded joint is sensed by means of at least two magnetic field sensors, wherein the at least two magnetic field sensors are opposite one another with respect to a cross-sectional center point of the wire.

99. A wire testing apparatus, comprising

a device for production of an eddy current in a wire and at least two magnetic field sensors which are arranged offset with respect to one another in the circumferential direction of the wire, in order to sense a magnetic field which is formed by the eddy current.