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AS 2331.1.5:2001 (R2017)

AS 2331.1.5:2001 (R2017)

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Methods of test for metallic and related coatings – Local thickness tests – Beta-backscatter method

Published By Publication Date Number of Pages
AS 2001-12-11 21
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Sets out a method for the non-destructive measurement of coating thickness using beta-backscatter gauges. Applies to both metallic and non-metallic coatings on both metallic and non-metallic substrates.

Scope

This Standard specifies a method for the non-destructive measurement of coating thicknesses using beta-backscatter gauges. It applies to both metallic and non-metallic coatings on both metallic and non-metallic substrates. To employ this method, the atomic numbers or equivalent atomic numbers of the coating and the substrate need to differ by an appropriate amount.
WARNING: BETA-BACKSCATTER INSTRUMENTS USED FOR THE MEASUREMENT OF COATING THICKNESSES EMPLOY A NUMBER OF DIFFERENT RADIOACTIVE SOURCES. ALTHOUGH THE ACTIVITIES OF THESE SOURCES ARE NORMALLY VERY LOW, THEY CAN PRESENT A HAZARD TO HEALTH, IF INCORRECTLY HANDLED. THEREFORE, ALL RULES AND REGULATIONS OF LOCAL OR NATIONAL AUTHORITIES MUST BE OBSERVED.
NOTES:
1 Characteristics of isotopes used with beta-backscatter gauges are given in Appendix A.
2 The atomic numbers of some commonly used coatings and substrates are given in Appendix B.

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AS 2331.1.5:2001 (R2017)
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