Comparison of Three Additive Manufacturing (AM) Techniques for Manufacturing Complex Hollow Composite Parts

Abstract Additive manufacturing (AM) is well known for supporting the of composites through 3D printing lay‐up tools, sacrificial mandrels, trim molds, etc. The fused deposition modeling (FDM) a pioneer in composite tooling. This technique advantageous many scenarios which it convenient to obtain hollow parts by dissolving removing use expensive and heavy metal molds. However, effects that removal process has on thermomechanical properties must be considered. convenience another AM technique, liquid crystal display (LCD) printing, also recently been demonstrated. present work aims compare three different techniques, FDM, filament fabrication (FFF), LCD, each using materials and, therefore, mandrel processes. DMA analyses have highlighted impact some dissolution processes properties. Further mechanical analysis conducted support what found characterization tests. Finally, an economic highlight time cost savings technologies compared conventional method parts.