Features December 2016 Issue

A New Spin on Dependable Crimps and Splices

Our test focused primarily on the small-wire connections’ tensile strength, with and without solder, but we also looked at their durability under tough environmental conditions. We tested the pull-out strength without solder and the pull-out strength of soldered connections at 400 degrees by heating the connections in an oven to simulate overheating conditions. We tested fatigue by spinning a 6-inch length of splice wire at 650 RPM in a simple device that we called the “wire-fatigue whirligig.” Finally, testers soaked all samples for four months in salt water to accelerate corrosion, and then, we repeated the fatigue test.

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