compressive creep

Why Do Travel Liquid Containers Fail? Decoding Creep and Oligomer Leaching Reference Standard: ASTM D1693 (Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics) and ASTM D2990 (Standard Test Methods for Tensile, Compressive, and Flexural Creep and Creep-Rupture of Plastics). Short Answer Travel containers primarily leak due to the compressive creep of polymer threads under thermal cycling, which secretly diminishes the torsional pre-stress required for a hermetic seal. Furthermore, the endogenous embrittlement caused by oligomer leaching from aggressive cosmetic solvents drastically lowers the structural yield threshold of the polyethylene matrix. Torsional Pre-stress Decay and Compressive Creep Mechanics of Thread Flanks When examining the failure mechanics of travel containers for liquids … 続きを読む