ISO/PWI 25757

Plastics - Determination of fatigue properties

Scope

The proposed standard defines the general principles for determining S-N curves (magnitude of alternating stress versus number of cycles to failure) for plastics in a wide temperature field. The procedure is to be used to investigate the cyclic fatigue behavior of test specimens, e.g. the determination of the stress versus number of cycles to failure curves. The procedure is particularly suitable for use in the material group of injection-molded thermoplastics, unfilled and filled, including short fiber reinforced thermoplastics with a fiber length of up to 7.5mm as well as curable plastics.