Durometer Hardness
The durometer hardness test is, simply put, a durometer measurement of the hardness of jacket material. The test determines if the jacket material is of adequate harness for use in cable construction. Read more
Archives
Barometric Pressure (Reduced)
This listing refers to the barometric pressure test for capacitors. The barometric pressure test evaluates the performance of electrical components at reduced atmospheric pressure such as is expected in high altitude flight. In this evaluation, the capacitor under test is mounted in the pressure chamber and is conditioned in accordance with MIL-STD-202. After conditioning, with […] Read more
Finish
This test is a visual examination of particular categories of wire: ASTM B298 – Silver-Coated Soft or Annealed Copper Wire. ASTM B267 – Wire for Use in Wire Wound Resistors. A Lectromec technician will thoroughly inspect the wire, without magnifying aid, to identify any kinks, cracks, damage, or other abnormalities of the wire. Read more
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