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Electromagnetic Nondestructive Evaluation of Wire Insulation and Models of Insulation Material PropertiesPolymers have been widely used as wiring electrical insulation materials in space/air-craft. The dielectric properties of insulation polymers can change over time, however, due to various aging processes such as exposure to heat, humidity and mechanical stress. Therefore, the study of polymers used in electrical insulation of wiring is important to the aerospace industry due to potential loss of life and aircraft in the event of an electrical fire caused by breakdown of wiring insulation. Part of this research is focused on studying the mechanisms of various environmental aging process of the polymers used in electrical wiring insulation and the ways in which their dielectric properties change as the material is subject to the aging processes. The other part of the project is to determine the feasibility of a new capacitive nondestructive testing method to indicate degradation in the wiring insulation, by measuring its permittivity.
Document ID
20120002028
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Bowler, Nicola (Iowa State Univ. Ames, IA, United States)
Kessler, Michael R. (Iowa State Univ. Ames, IA, United States)
Li, Li (Iowa State Univ. Ames, IA, United States)
Hondred, Peter R. (Iowa State Univ. Ames, IA, United States)
Chen, Tianming (Iowa State Univ. Ames, IA, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2012
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NASA/CR-2012-217330
NF1676L-14135
Funding Number(s)
WBS: WBS 284848.02.02.07.02.03
CONTRACT_GRANT: NNX07AU54A
Distribution Limits
Public
Copyright
Public Use Permitted.

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