MAGNETIC SUSCEPTIBILITY IMAGING FOR NONDESTRUCTIVE EVALUATION

被引：18

作者：

Wikswo, J. P., Jr. ^{[1
]}

Ma, Y. P. ^{[1
]}

Sepulveda, N. G. ^{[1
]}

Tan, S. ^{[1
]}

Thomas, I. M. ^{[1
]}

Lauder, A. ^{[2
]}

机构：

[1] Vanderbilt Univ, Dept Phys & Astron, Electromagnet Lab, Box 1807, Nashville, TN 37235 USA

[2] Du Pont Cent Res & Dev, POB 80304, Wilmington, DE 19880 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233464

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

High resolution superconducting magnetometers such as MicroSQUID have been shown to be effective for nondestructive evaluation. MicroSQUID can also be used with a room temperature magnet to image the magnetic susceptibility of materials. A dia- or paramagnetic sample is scanned in the applied field and the local perturbations are measured. For thin samples, such as plates, sheets or thin sections of rock, we deconvolve the data to generate two-dimensional susceptibility images. Three-dimensional structures can be imaged with magnetic susceptibility tomography: deconvolution of a large data set obtained by applying the field and scanning in multiple orientations. Extremely small surface defects on nonmagnetic or weakly magnetic samples are imaged by decorating the sample with paramagnetic microspheres prior to scanning. Magnetic susceptibility imaging demonstrates the feasibility of SQUID NDE on materials that could previously be examined only with X-rays or ultrasound.

引用

页码：1995 / 2002

页数：8

共 33 条

[1]

Bain R.J.P., 1985, SQUID 85, P841

[2] DESIGN AND OPERATION OF SQUID-BASED PLANAR GRADIOMETERS FOR NONDESTRUCTIVE TESTING OF FERROMAGNETIC-PLATES [J].

BAIN, RJP ;

DONALDSON, GB ;

EVANSON, S ;

HAYWARD, G .

IEEE TRANSACTIONS ON MAGNETICS, 1987, 23 (02) :473-476

[3]

BUCHANAN DS, 1989, ADV BIOMAGNETISM, P677

[4]

Cochran A., 1991, NDE REV

[5] USE OF A SUPERCONDUCTIVE GRADIOMETER IN AN ULTRASENSITIVE ELECTROMAGNETIC METAL DETECTOR [J].

CZIPOTT, PV ;

PODNEY, WN .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :1204-1207

[6]

DILUZIO S, 1989, ADV BIOMAGNETISM, P505

[7] SQUID DETECTION OF ELECTRONIC-CIRCUITS [J].

FAGALY, RL .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :1216-1218

[8] A CLINICAL-SYSTEM FOR ACCURATE ASSESSMENT OF TISSUE IRON CONCENTRATION [J].

FARRELL, DE ;

TRIPP, JH ;

BRITTENHAM, GM ;

DANISH, EH ;

HARRIS, JW ;

TRACHT, AE .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1983, 2 (02) :582-593

[9]

Hurley D. C., 1992, 92CRD072 GEN EL RES

[10]

Ma Y. P., 1991, REV PROGR QUANTITA A, V10a, P979

← 1 2 3 4 →