Adhesion to PVC – Potting Compound

Adhesion testing of potting/molding compound to polyvinyl chloride (PVC) is designed to assess the bonding strength between the compound used for insulation and sealing and any PVC components in the electrical assembly. Effective adhesion of the potting compound is essential to the assembly’s durability and protection from external factors. Sheets of primed PVC will be […] Read more

Radio Frequency Leakage

Radio Frequency (RF) leakage testing of aircraft TEM (transverse electromagnetic wave) transmission lines involves assessing the cable’s ability to contain and prevent unwanted RF signals from leaking out or interfering with nearby electronic systems. The RF energy leaked from a transmission line must be within the specified limits. Leakage measurements will be performed with an […] Read more

Coupling Torque

Coupling torque testing evaluates the axial mating force and the torque that must be applied to facilitate full coupling and uncoupling of connectors. It is necessary to ensure that connectors can be properly installed and removed in the intended application without causing damage to the cable or compromising the electrical connection. Read more

Grind Test

Grind testing of cable assemblies with molded or potted components evaluates those components for physical irregularities. The potted component is ground down and visually examined with magnification for flaws such as voids or pits which may be caused by poor molding or potting procedures or materials. Read more

Air Leakage

Air leakage testing evaluates the integrity of hermetic and environmental seals on electrical connectors. At minimum, a 1 atmosphere pressure differential will be applied across the connector under test, and a detector is used to measure any leakage at the seal. The applied pressurized air/gas shall contain not less than 10% helium by volume. Read more

Temperature Coefficient of Resistance

The temperature coefficient of resistance (TCR) is used to determine how the electrical resistance of a conductor changes with temperature. The temperature coefficient of resistance is the change in resistance per degree centigrade over the temperature range of the conductor above 20°C. The change in resistance is determined by at least four measured resistance values […] Read more

Change in Optical Transmittance

This test evaluates the change in optical transmittance of a fiber optic cable after exposure to one or more environmental or physical stress tests. It is not typically performed as a stand-alone test, but performed before, during, and after specified mechanical/environmental tests. A baseline measurement of optical power is recorded prior to any stress tests. […] Read more

Mating and Unmating Forces

The ability of a connector to mate and unmate regularly throughout its service life is essential to the maintainability of an electrical system. The mating/unmating forces tests this durability by performing repeated cycles of mating and unmating on the connector under test. Torque is measured at the start and end of the cycles to assess […] Read more

Pulse Response Time

The pulse response time test determines the ability of a completed cable for data transmission to propagate a square wave signal with the desired speed and accuracy. To assess the signal transmission, the evaluation involves the use of a signal generator, oscilloscope, and pulse transformer. Specimen failure is considered if the test cable exhibits a […] Read more

Cold Impact

Cold impact testing assesses whether a cable can withstand impact forces after being subjected to low temperatures without cracking and continue to maintain insulation properties. After exposure to a specified freezing temperature, a controlled mechanical impact is applied to the cable, simulating real-world scenarios such as accidental drops, crushing, or bending. The cable’s performance is […] Read more

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