G - Physics – 01 – B
Patent
G - Physics
01
B
324/53
G01B 7/10 (1985.01)
Patent
CA 1230379
MEASURING THE THICKNESS OF A NON-METALLIC COATING ON AN ARCUATE METAL SURFACE ABSTRACT OF THE DISCLOSURE Measuring the thickness of a non-metallic coating on an arcuate metal surface of an article by engaging the coating with a measuring head which carries a sensing member of a reactance monitoring means, and creating an electromagnetic field in the region of the head and in adjacent regions of the coated surface. The reactance which is affected by the position and degree of curvature of the metal surface is then measured and produces a first signal indicative of the apparent thickness of the coating in the regions adjacent the head for a given degree of surface. The degree of curvature of the metal surface is also monitored for the regions adjacent the head to provide a second signal indicative of the actual degree of curvature. A correction factor which is dependent upon the second signal is then caused to influence the first signal and produce a modified signal which more accurately represents the true thickness of the part of the coating being measured. - i -
485969
Austin Reginald J.
Superior Essex Communications Llc
LandOfFree
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