Studies on the influence of design parameters on the behaviour at shock of 3D-printed components fabricated by fused deposition modelling

In the last years, more and more products are made through fused deposition modelling (FDM). Although it has the disadvantage that it is a slow process, it is very well suited for the parts with complex shapes, which are difficult to obtain by classical machining. A huge advantage of this process is that the internal structure of the piece can be personalized according to the operation requirements. In the FDM process, the parts are builds up layer by layer. 3D printed objects will often have anisotropic mechanical properties. This means a printed part will be weaker in the direction of the Z axis. This paper presents studies on the influence of design parameters on the behaviour at shock of 3D-printed components fabricated by FDM. For this purpose, test specimens for shock breakout were made. The specimens were made with various internal structures and different orientations. The material for the parts is ULTRAT. (paper)