Additive Manufacturing

Description

MIT, 2013. — 19 p.Contents: Making news recently What is Additive Manufacturing? References Fused deposition modeling (FDM) Pinwheel made by FDM (Fall 2002) The consumer market is responsible for the hype, and huge potential? Industry drivers Common AM methods / classification FDM physics: extrusion The extruder (Stratasys Dimension) FDM part mechanical properties Stereolithography (SLA) SLA skull prototype Part comparison: FDM vs. SLA A sphere made on the Form1: post-print curing Tolerances: where is FDM, SLA? Surface roughness: where is FDM, SLA? Micro-SLA (in some cases known as two-photon polymerization) F1 car 0.285 mm long! 3D printing (as it was named) Example 3D printed parts (quality?) Powder 3D printing (Z-Corp) Selective laser sintering (SLS) SLS – metal parts Sintering mechanism Infiltration after sintering Dyson SLA/SLS prototyping Simultaneous deposition and fusion LENS nozzle designs Unifying attributes of AM methods? Cost versus throughput (volume) Real applications and markets Invisalign Invisalign process (as of Kalpakjian) Short run injection molding Aircraft parts Individual design and who cares WHERE or HOW my part is made? Proposed organ printing method Critical enablers of continued growth Standard Terminology for Additive Manufacturing Technologies