Effect of Fiber Orientation in Fatigue Properties of FRAM Components

Abstract

The purpose of this research study is to evaluate the effect of fiber pattern and infill type on the tension-tension fatigue properties of Fiber Reinforced Additive Manufacturing (FRAM) specimens with a load ratio of 0.1. As for the design of the study the specimens are generated with different fiber orientations and are divided into “concentric” and “isotropic” specimens, depending on the pattern the fiber is laid down. From experimental fatigue testing, the most resistant specimens to failure turn out to be carbon fiber reinforced nylon with 0 rings isotropic infill and 1 ring isotropic with concentric infill. As a conclusion, it is noticed that increasing the number of rings for concentric infill specimens increases the fatigue performance, while for isotropic infill increasing the number of rings actually decreases the fatigue performance.