Abstract

ISO 21968:2005 describes a method of using phase-sensitive eddy-current instruments for non-destructive measurements of the thickness of non-magnetic metallic coatings on metallic and non-metallic basis materials such as zinc, cadmium, copper, tin or chromium on steel, as well as copper or silver on composite materials.

The phase-sensitive method can be applied without thickness errors to smaller surface areas and to stronger surface curvatures than the amplitude-sensitive eddy-current method described in ISO 2360, and is less affected by the magnetic properties of the basis material. However, the phase-sensitive method is more affected by the electrical properties of the coating materials.


General information 

  • Status
     : Withdrawn
    Publication date
     : 2005-07
  • Edition
     : 1
    Number of pages
     : 12
  • Technical Committee
     : ISO/TC 107 Metallic and other inorganic coatings
  • ICS
     :
    25.220.40 Metallic coatings

Life cycle

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