Connectors for Aluminum Cables: A Study of the Degradation Mechanisms and Design Criteria for Reliable Connectors

The mechanisms of degradation which occur in mechanical connectors on aluminum power conductors have been examined. The factors investigated include constant and cycling mechanical load, stress relaxation, plastic deformation, surface finish, temperature, temperature cycling, and supertemperature. The aluminum-aluminum interface is shown to be stable, and the design requirements for stable connections to aluminum conductors are given.