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Inspection non destructrice utilisant un supraconducteur à haute température SQUID pour des tubes d'échangeur de chaleur en cuivre.

[In Japanese. / En japonais.]

Auteurs : HATASUKADE Y., KOSUGI A., MORI K., et al.

Type d'article : Article

Résumé

An eddy-current-based nondestructive inspection method using an HTS SQUID gradiometer cooled using a cryocooler was employed for the detection of micro flaws in thin copper tubes 6.35 mm in diameter and 0.8 mm in thickness. With an excitation field of 1.6 microT at 5 kHz, a flaw in the tube, measuring 30 microm deep and 15 mm long, was successfully detected by the system with a high signal-noise ratio of at least 20. Numerical simulations were also conducted to determine how many sensors would be required for inspection around the circumference of an entire tube.

Détails

  • Titre original : [In Japanese. / En japonais.]
  • Identifiant de la fiche : 2006-2864
  • Langues : Japonais
  • Source : Journal of the Cryogenic Society of Japan - vol. 40 - n. 8
  • Date d'édition : 2005

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