Connector Durability

The ability of a connector to mate and unmate regularly and dependably is crucial to the maintainability of any electronic system. Secure mated connections prevent unintended electrical disconnect, and ease of unmating connections allows for easier and safer maintenance. Connectors in any application should be designed to withstand regular mating and unmating throughout their service […] Read more

Color Stability

Aerospace wire and cable are frequently identified by color to designate system, purpose, etc. It is crucial that the insulation of a wire or cable is able to maintain its assigned color throughout normal operating conditions to ensure reliable identification. The color retention test evaluates an insulation’s ability to maintain its color under elevated temperature […] Read more

Case Insulation Test

The Case Insulation Test is a combination of the dielectric withstanding voltage and insulation resistance tests adapted to insulated capacitors. To pass this test, a capacitor must not have any insulation breakdown during either evaluation and must have an insulation resistance of at lease 100 megaohms. Other, more specified criteria are available in MIL-PRF-39018. Read more

Backshell Shield Braid to Shell Conductivity

The backshell shield braid to shell conductivity test measures the voltage drop between a connector backshell’s shield braid and to either the threads or mounting bracket of the receptacle. This test is a variant of the Shell to Shell Conductivity test and is performed in the same way with the exception of the measurement locations. […] Read more

Axial Stability (Longitudinal Change) After Thermal Exposure

The Axial Stability test evaluates the ability of wire/ cable insulation to resist longitudinal dimensional change while cycling between high and low temperatures. A test sample undergoes five cycles of exposure to heat, cold, and room temperature, remaining at each temperature for the amount of time it takes for the sample to reach thermal equilibrium […] Read more

Axial Concentricity

This listing covers the AS39029 standards of axial concentricity for both wired and unwired contacts. The axial concentricity quantitatively measures the concentricity of a wire or cable sample as a TIR (Total Indicator Reading) measurement. Removable contacts are placed at locations as indicated by the testing standard and rotated at least 360 degrees, such that […] Read more

Armor

The Armor test consists of two smaller tests, Springiness and Toughness. Each is designed to evaluate the durability of armor wire. Tests are performed on ten individual pieces of armor wire, five for each test. Springiness A sample is slowly wrapped around a mandrel at a consistent tension (100-125 grams). The tension is maintained by […] Read more

Altitude Immersion

It is no surprise that aircraft components are expected to withstand rapid and extreme changes in altitude without loss of functionality. The altitude immersion test subjects a sample connector to such changes in altitude pressure and assesses its ability to maintain functionality. The altitude immersion test simulates aircraft conditions of rapid descent, cycling from conditions […] Read more

Adhesion of Nickel Coating

Nickel coating on copper conductors is an effective means of increasing a conductor’s resistance to corrosion and its operating temperature. These properties make it a commonly applied material in conductor coating. The adhesion of Nickel coating test evaluates the adherence of a nickel plating to an underlying copper/ copper alloy material. Two lengths of uninsulated […] Read more

Aging Stability

To test for aging stability, four specimens are cut from the wire sample. For cables whose jacket diameter is less than 0.5 inch (12.7 mm), the specimen is cut to 125 times the cable diameter, and cables that are 0.5 inch (12.7 mm) or larger are cut 95 times the cable diameter. For armored cables, […] Read more

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