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Proceedings Paper

Magnetic field measurements on bridges and development of a mobile SQUID system
Author(s): Juergen Krieger; Hans-Joachim Krause; Uwe Gampe; Gottfried Sawade
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Paper Abstract

The paper describes the application of Non-Destructive Testing for the detection of ruptures in the prestressing reinforcement. These damages can be detected by the non- destructive and contactless magnetic stray field measuring method. The paper presents the underlying physical principle and the results of measurements on bridges. Furthermore, the development of a multi-channel system utilizing Superconducting Quantum Interference Devices as most sensitive magnetic field detectors will be reported. First laboratory measurements indicate the potential of this new technique.

Paper Details

Date Published: 1 February 1999
PDF: 12 pages
Proc. SPIE 3587, Nondestructive Evaluation of Bridges and Highways III, (1 February 1999); doi: 10.1117/12.339929
Show Author Affiliations
Juergen Krieger, Federal Highway Research Institute (Germany)
Hans-Joachim Krause, Forschungszentrum Juelich (Germany)
Uwe Gampe, Forschungs-und Materialpruefanstalt Baden--Wuerttemberg (Germany)
Gottfried Sawade, Siempelkamp Pruef-und Gutachtergesellschaft (Germany)

Published in SPIE Proceedings Vol. 3587:
Nondestructive Evaluation of Bridges and Highways III
Steven B. Chase, Editor(s)

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