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Electrical condition monitoring method for polymers

United States Patent

February 16, 2010
View the Complete Patent at the US Patent & Trademark Office
An electrical condition monitoring method utilizes measurement of electrical resistivity of a conductive composite degradation sensor to monitor environmentally induced degradation of a polymeric product such as insulated wire and cable. The degradation sensor comprises a polymeric matrix and conductive filler. The polymeric matrix may be a polymer used in the product, or it may be a polymer with degradation properties similar to that of a polymer used in the product. The method comprises a means for communicating the resistivity to a measuring instrument and a means to correlate resistivity of the degradation sensor with environmentally induced degradation of the product.
Watkins, Jr.; Kenneth S. (Dahlonega, GA), Morris; Shelby J. (Hampton, VA), Masakowski; Daniel D. (Worcester, MA), Wong; Ching Ping (Duluth, GA), Luo; Shijian (Boise, ID)
12/ 082,161
April 9, 2008
This application resulted, in part, from research funded by the U.S. Department of Energy. Certain rights for any intellectual property resulting from this application may apply to the Government of the United States.