Mechanical performance in fused deposition modeling manufactured parts-an additive manufacturing review

Fused deposition modeling (FDM) is a rapid prototyping technology which has simplified the process of creating complex parts and components. 3D printers based on FDM technology are relatively low in cost, requires little maintenance and are easy to learn to use. This paper presents current and innovative strategies in improving mechanical behavior of FDM fabricated parts. Polymers are often used due to their relatively low melting point and acceptable mechanical performance. Some materials allow for the user to design parts that will be used in mechanically demanding scenarios. FDM produced parts are often much weaker in the direction perpendicular to the layers. This will affect the overall performance of the part. When looking for ways to better the mechanical performance the user can manipulate the orientation of the part to ensure the part will be used in its ‘strongest’ orientation. There are many ways in which the user can manipulated the slicer/G-Code to further optimize the mechanical behavior. Some of the production parameters that are available in slicers will directly influence the mechanical integrity of the part to be manufactured. This paper sheds light on various pre-and-post-manufacturing techniques used to optimize the mechanical behavior of FDM manufactured technology.