Title :
Practical scanning SQUID system for nondestructive evaluation
Author :
Isawa, K. ; Takagi, S. ; Tosaka, S. ; Nakayama, S. ; Ikeda, M. ; Chinone, K.
Author_Institution :
R & D Center, Tohoku Electr. Power Co. Inc., Sendai, Japan
fDate :
6/1/2005 12:00:00 AM
Abstract :
An advanced scanning Superconducting Quantum Interference Device (SQUID) system called a "Traveling SQUID-NDE" was developed for nondestructive evaluation (NDE). The traveling SQUID-NDE can continuously "travel" back and forth over the surface of an object during testing without the need for magnetic shielding. Such movement by the SQUID sensor itself enables the SQUID-NDE to scan objects of unlimited size. In this work, the traveling SQUID-NDE system was combined with a manipulator used by conventional robots (either rectangular-type or articulated-type) used in industry, to manipulate the SQUID sensor for travel across an object. The effectiveness of this robotic traveling SQUID-NDE system was demonstrated by using it to detect artificial damage in stainless steel samples. This robotic traveling SQUID-NDE system proved useful for measuring two-dimensional magnetic images of fixed objects.
Keywords :
SQUID magnetometers; computerised instrumentation; industrial manipulators; magnetic sensors; mobile robots; nondestructive testing; portable instruments; DC-SQUID gradiometer; SQUID sensor; advanced scanning superconducting quantum interference device system; articulated-type robots; conventional robots; nondestructive evaluation; practical scanning SQUID system; rectangular-type robots; robotic traveling SQUID-NDE system; Interference; Magnetic sensors; Magnetic shielding; Manipulators; Robot sensing systems; SQUIDs; Sensor systems; Service robots; Superconducting devices; Testing; “traveling” SQUID-NDE; DC-SQUID gradiometer; nondestructive evaluation; portable system;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.850022
