Ar-glass filament material law for arbitrary quasi-static long-term loading

► Material law of filaments made of alkali-resistant glass considering long-term load. ► Tensile tests under cyclic and constant long-term loading are carried out. ► A time-dependent strength degradation model is developed. ► Model parameters are identified from test data using a hybrid optimisation method. ► Calculation of the fatigue strength limit for different loading rates.