Immersion Leak Detection

The ability of aircraft wire/cables to effectively prevent fluid leakage is essential to protecting sensitive electrical components and avoiding damage by corrosion. The immersion leak detection test evaluates the effectiveness of seals and the airtightness of a wire or cable assembly. The procedure involves the use of the Wire Insulation Degradation Analysis System (WIDAS). The […] Read more

Property Retention After Thermal Aging

The property retention test evaluates the mechanical properties of a specimen of finished insulated wire before and after 1000 hours of thermal aging. The test methods used to evaluate the mechanical properties of the specimen after heat aging are: Dynamic Cut-Through (AS4373 Method 703) Flex Life (AS4373 Method 704) Notch Propagation (AS4373 Method 706) Read more

Forward Voltage

Forward voltage testing involves measuring the voltage drop across a diode or semiconductor junction in a cable when a forward-bias current is applied. An increase in forward voltage drop may be an indicator of an electrical component that is soon to fail. The voltage drop across the test specimen may be calculated by three methods: […] Read more

Water Absorption

Insulative material on wire and cables must be able to withstand exposure to moisture or humidity commonly encountered in aircraft operating environments. Excessive water absorption may lead to degradation of insulation, leakage currents, and electrical breakdown. The water absorption test evaluates an insulation material’s resistance to moisture ingress. Moisture absorption is measured through the change […] Read more

Smoke Toxicity

Toxicity testing of aircraft wire is crucial to assess the potential health hazards associated with the combustion of wire materials, particularly the release of toxic gases. The gases from combustion of materials under test are captured at specified intervals and chemically analyzed for the following gases: carbon monoxide, nitrogen oxides, hydrogen cyanide, sulfur dioxide, hydrogen […] Read more

Adhesion to Metal – Potting Compound

Adhesion testing of potting/molding compound to metal is designed to assess the bonding strength between the compound used for insulation and sealing and a metal substrate in the electrical assembly. Effective adhesion of the potting compound is essential to the assembly’s durability and protection from external factors. A primed metal panel will be coated in […] Read more

Adhesion to Rubber – Potting Compound

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

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

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