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Difference in low-frequency impedance caused by a cyclic accelerated test for a series of primers and appliqués. Averages for each primer and for each appliqué are given on the right and front, respectively.
Creepage from a scribe as a function of the difference in log low-frequency impedance caused by a cyclic accelerated test for several top coat/primer systems. The best coatings would be near the origin. Also shown is a measure of the reproducibility from run-to-run and specimen-to-specimen. The best performing coatings have the best reproducibility.
Figure 6
In-Situ Sensor to Detect Moisture Intrusion and Degradation of Coatings, Composites, and Adhesive Bonds, G.D. Davis, C.M. Dacres, and L.A. Krebs, DACCO SCI Inc.