A comparison of the performance of planar and conventional second-order gradiometers coupled to a squid for the NDT of steel plates

IEEE Transactions on Magnetics

Volumn 25, Issue 2, 1989, Pages 1200-1203

  Stirling, G ^b   Hayward, G ^b   Donaldson, G B ^a  

^a Department of Physics and Applied Physics ^*  (United Kingdom)

^b UNIVERSITY OF STRATHCLYDE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

STEEL--NONDESTRUCTIVE EXAMINATION; SUPERCONDUCTING DEVICES;

DC MAGNETIZING FIELD; PLANAR GRADIOMETER; SECOND-ORDER GRADIOMETERS; SQUID (SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE); STEEL PLATES;

MAGNETOMETERS;

EID: 0024627285     PISSN: 00189464     EISSN: 19410069     Source Type: Journal    
DOI: 10.1109/20.92511     Document Type: Article

References (7)

1. R.J.P.Bain, G.B.Donaldson, S. Evanson and G.Hayward, “Operation of SQUID-Based Planar Gradiometers for Non-Destructive Testing of Ferromagnetic Plates”, IEEE Trans On Magnetics, MAG-23(2), 473–476, 1987
2. P.Hammond, “Electric and Magnetic Images”, Institution of Electrical Engineers Monograph No. 379, 1960.
3. D.E. Gray (Ed). American Institute of Physics Handbook. New York: McGraw-Hill Book Company, 1972, ch. 5, p.30.
4. F.W.Grover, “Inductance Calculations”, Dover Publications Inc., New York, 1946, ch. 19, p.204.
5. R.L. Forgacs and A.Warnick, “Digital-Analog magnetometer utilizing superconducting sensor”, Rev.Sci.Instr, vol 38, 214–220, 1967
6. G.Mills, “Underwater - inspection - the requirements and methods”, NDT-85, EMAS Chameleon Press, 227–247, 1986.
7. S.Evanson, PhD Thesis, University of Strathclyde, Glasgow, 1988.