A review of SQUID magnetometry applied to nondestructive evaluation

Author

Weinstock, Harold

Author_Institution

US Air Force Office of Sci. Res., Bolling AFB, Washington, DC, USA

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

3231

Lastpage

3236

Abstract

The development of the SQUID as the most sensitive instrument known for the measurement of changes in magnetic flux has presented new opportunities for its use for nondestructive evaluation (NDE) of electrically conducting and ferromagnetic structures. The preliminary studies of this application within the past few years are reviewed in order to serve as an introduction to those that follow. It includes early work by the author that explored the ability of a SQUID to detect defects in a buried pipe and to detect fatigue in steel structures. Studies designed to find defects in North Sea oil platforms and corrosion currents are covered, as well as more recent work in mapping the magnetic field above a current-carrying circuit board. The future of SQUID-based NDE is discussed

Keywords

SQUIDs; flaw detection; magnetic field measurement; magnetometers; NDE; North Sea oil platforms; SQUID magnetometry; buried pipes; corrosion currents; electrically conducting structures; fatigue detection; ferromagnetic structures; magnetic anomaly detection; magnetic field mapping; nondestructive evaluation; review; steel structures; Corrosion; Electric variables measurement; Fatigue; Instruments; Magnetic fields; Magnetic flux; Offshore installations; SQUIDs; Sea measurements; Steel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133898

Filename

133898