scholarly journals A Traveling SQUID Magnetic Imaging System and Its Application for Nondestructive Testing

2004 ◽  
Vol 39 (10) ◽  
pp. 488-494 ◽  
Author(s):  
Kazuyuki ISAWA ◽  
Satoshi NAKAYAMA ◽  
Toshimitsu MOROOKA ◽  
Masanori IKEDA ◽  
Sakae TAKAGI ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Imaging System ◽  
Magnetic Imaging

scholarly journals Magnetic Imaging of Superconducting Tapes to Determine Current Flow

2000 ◽  
Vol 659 ◽  
Author(s):  
G.W. Brown ◽  
M.E. Hawley ◽  
S.R. Foltyn ◽  
F.M. Mueller
Keyword(s):  
Magnetic Field ◽  
Current Flow ◽  
Imaging System ◽  
Ion Beam ◽  
Hard Disk Drives ◽  
Liquid Nitrogen Temperature ◽  
Transport Current ◽  
Superconducting Tapes ◽  
Magnetic Imaging ◽  
Density Maps

ABSTRACTWe have developed a magnetic imaging system that uses magnetoresistive read heads from computer hard disk drives to map the transport-current-induced magnetic field at the surface of superconducting tapes at liquid nitrogen temperature. Transport current pathways are determined from the 2-dimensional magnetic field maps using established inversion schemes. We examined the current flow in pulsed-laser-deposited YBa2Cu3O7-σ films patterned on single crystal SrTiO3 substrates and on a textured yttria-stabilized-zirconia layer deposited on an Inconel ribbon by ion beam assisted deposition. The transport current densities in all cases were consistent with the Critical State Model. For the Inconel-based sample, the transport current density maps have allowed us to observe defects and determine the region that limits the current carrying capacity of the structure.

Magneto-Optic Microscope Technology for Nondestructive Testing

2013 ◽  
Vol 330 ◽  
pp. 291-298 ◽  
Author(s):  
Yu Hua Cheng ◽  
Xing Make Liu ◽  
Li Bing Bai ◽  
Gui Yun Tian
Keyword(s):  
Nondestructive Testing ◽  
Imaging System ◽  
Internal State ◽  
Testing Methods ◽  
Magneto Optic ◽  
Subsurface Defects

Nondestructive testing (NDT) is becoming more and more important nowadays, visual nondestructive testing (VNDT) such as imaging instead of traditional testing methods becomes popular and highly demanded, which makes it possible to see the internal state of objects visually. The magneto-optic (MO) microscope technology for nondestructive testing is detailedly introduced in this paper, include two different MO imaging system to test the buried subsurface defects in metallic and magnetic specimens.

Nondestructive Testing Using TRW Acousto-Optical Imaging System

1971 ◽  
Author(s):  
Robert Aprahamian ◽  
Jerold L. Jacoby ◽  
Pravin G. Bhuta
Keyword(s):  
Nondestructive Testing ◽  
Optical Imaging ◽  
Imaging System ◽  
Optical Imaging System
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