Magnescope: a portable magnetic inspection system for evaluation of steel structures and components

Author

Jiles, D.C. ; Hariharan, S. ; Devine, M.K.

Author_Institution

Center for Nondestructive Evaluation, Iowa State Univ., Ames, IA, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2577

Lastpage

2579

Abstract

The authors describe a portable magnetic inspection device developed for nondestructive evaluation of ferromagnetic steel structures and components. The device consists of an inspection head, instrumentation for measuring magnetic-field and flux density, and a computer together with the necessary control and data-analysis software. The device has been used for nondestructive evaluation of the mechanical condition of steels, particularly, detection of stress and monitoring the progress of fatigue damage. The most important application is in the detection of incipient failure, such as occurs with fatigue damage, temper embrittlement, and creep damage. Results which demonstrate the successful use of this instrument in monitoring fatigue are described

Keywords

computerised instrumentation; crack detection; fatigue testing; ferromagnetic properties of substances; inspection; magnetic field measurement; magnetic variables measurement; nondestructive testing; components; computer control; creep damage; data-analysis software; fatigue damage; ferromagnetic steel structures; flux density; incipient failure; instrumentation; magnescope; magnetic-field; mechanical condition; nondestructive evaluation; portable magnetic inspection system; steel structures; stress; temper embrittlement; Condition monitoring; Density measurement; Fatigue; Inspection; Instruments; Magnetic devices; Magnetic flux; Magnetic heads; Software measurement; Steel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104803

Filename

104803