Patent ID: 7027937
Filing Date: 2006-04-11
Classification: G01R

Abstract:
1. A method in a data processing system having a program for determining the environmental resistance of a wire insulation, the method comprising the steps of: obtaining a first broadband impedance of the wire prior to the wire being exposed to an environmental condition; obtaining a second broadband impedance of the wire after the wire has been exposed to the environmental condition; extracting a first real component and a first imaginary component of a first dielectric function of the wire from the first broadband impedance; extracting a second real component and a second imaginary component of a second dielectric function of the wire from the second broadband impedance; calculating a first tangent of a ratio of the first imaginary component to the first real component of the first dielectric function; calculating a second tangent of a ratio of the second imaginary component to the second real component of the second dielectric function; and determining the environmental resistance of the wire insulation by comparing the first tangent to the second tangent.