Bandymo metodai, skirti ekstremaliems šaltų orų laidų diržams (-40¡Ãc sprendimai)
Arkties ar aukšto aukščio aplinkoje naudojamos vielos diržai turi išlikti funkcionalūs esant dideliam šalčiui. Šiame straipsnyje nagrinėjami medžiagos pasirinkimai ir bandymo metodai, užtikrinantys patikimumą iki -40 ¡ãc ir žemiau.
Cold Weather Challenges
Brittle Insulation: Some materials crack at low temperatures.
Reduced Flexibility: Harnesses become rigid, risking breakage.
Condensation and Ice Formation: Leads to corrosion or short circuits.
Material Selection
Izoliacija: TPE, silicone, and XLPE perform well in sub-zero conditions.
Seals and Grommets: Must remain elastic; silicone preferred.
Dirigentas: Stranded copper offers flexibility and conductivity.
Testing Procedures
Cold Bend Test (ISO 6722): Evaluates flexibility at low temperatures.
Cold Impact Test: Measures resistance to cracking from sudden impact.
Thermal Cycling: Simulates day/night or seasonal temperature shifts.
Design Best Practices
Avoid tight bend radii
Use over-molded or sealed connectors
Include water-blocking materials for moisture protection
Išvada
Cold-resistant wire harnesses must undergo specialized testing and material selection. Engineers should design with durability, flexibility, and sealing in mind to ensure performance in extreme environments.