Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1987-03-27
1989-02-21
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
204404, 427 10, G01N 2726, G01R 2702
Patent
active
048068497
ABSTRACT:
Method and apparatus for diagnosing degree of degradation of a coating film of a painted metal material by dividing the surface of the painted metal material into a number of small area zones, measuring impedance of the coating film at each of the zones through an AC impedance measuring technique, determining a statistic distribution and/or a two-dimensional distribution of impedance values measured at the individual zones to thereby determine the degree of degradation of the coating film of the painted metal material on the basis of the aforementioned distribution(s).
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patent: 4221651 (1980-09-01), Mansfeld
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Ito et al., A New Method to in situ Monitor Corrosion Protectivity of Rust on Weathering Steel, 5-1986.
Denki Kagaku (Electro Chemistry) No. 23, 1955, pp. 15-18.
Kogyo Kagaku (Industrial Chemistry), vol. 61, No. 3, 1958 pp. 291-295.
Collection of Lectures on the 30th Anti-Corrosion Symposium B-212, 1983.
Bosyoku Gijutsu, (Corrosion Protecting Technology), vol. 34, No. 8, 1985, pp . 464-465.
Ito Satoshi
Kihira Hiroshi
Murata Tomomi
Sakamoto Shunji
Yamamoto Kazuo
Eisenzopf Reinhard J.
Harvey Jack B.
Nippon Steel Corporation
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