Detection of micro-flaws on thin copper
Detection of micro-flaws on thin copper tubes using SQUID-NDI system based on eddy current technique
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Y. Hatsukade; A. Kosugi; K. Mori; S. Tanaka
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Article
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2005
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Elsevier Science
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English
โ 450 KB
We constructed a SQUID-NDI system for inspection of micro-flaws on heat exchanger copper tubes employing HTS-SQUID gradiometer and Helmholtz-coil-type inducer. The HTS-SQUID gradiometer was cooled using a coaxial pulse tube cryocooler. The detection of artificial flaws several tens of lm in depth on