Abstract
This study investigates the effect of tension fatigue loading on the residual strength degradation of additive manufactured ABS components formed by fused deposition modeling. Sinusoidal tension-tension fatigue loading with nine treatment combinations of cycling stress and duration were followed by tensile tests for 0°, +45/−45°, and +30/−60° mesostructures. Normalized residual strengths of the bidirectional mesostructures were significantly higher than that of the 0° parts for all factor combinations studied. A proposed phenomenological model, based on a strength degradation model for carbon fiber-reinforced composites, successfully described 92–96% of residual strength variability for the 0° specimens, and 77–92% for the bidirectional mesostructures tested.
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