Title :
A magnetic imaging system for evaluation of material conditions using magnetoresistive devices
Author :
Lo, C.C.H. ; Paulsen, J.A. ; Jiles, D.C.
Author_Institution :
Center for NDE, Iowa State Univ., Ames, IA, USA
fDate :
March 30 2003-April 3 2003
Abstract :
In this paper, we develop a new magnetic imaging system for non-destructive evaluation of structural and mechanical conditions of materials. This produces a multi-parameter contour plot of the spatial variations of variety of magnetic properties such as coercivity, remanence, permeability and Barkhausen effect signal. Also we have developed an integrated sensor probe capable of measuring both magnetic hysteresis and BE signals using magnetoresistive devices.
Keywords :
Barkhausen effect; coercive force; ferromagnetic materials; magnetic hysteresis; magnetic permeability; magnetic sensors; nondestructive testing; remanence; steel; BE signal; Barkhausen effect signal; coercivity; magnetic hysteresis; magnetic imaging system; magnetoresistive device; nondestructive evaluation; permeability; remanence; Coercive force; Magnetic devices; Magnetic materials; Magnetic properties; Magnetic sensors; Magnetoresistive devices; Mechanical sensors; Permeability; Probes; Remanence;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230671
