Thermal Aging of Silver-Plated Copper Aircraft Electrical Wire
Abstract
FEP/Polyimide insulated silver-plated copper aircraft electrical wire was thermally aged at temperatures of 150-230C for periods of up to 1000 hrs. The wires were examined for evidence that the insulation contributed to strand blocking during high temperature exposure. No evidence for a reaction between the insulation and the metal conductors was found. The phenomenon can be attributed entirely to the interstrand diffusion of silver. Two types of conductor degradation, unrelated to strand blocking, were identified. The nature, possible cause and probable effect of each is discussed and a change in the current temperature rating procedure is recommended.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0764731
Entities
People
- Lawrence R. Bidwell
Organizations
- Air Force Research Laboratory