The 7 Types of Additive Manufacturing: Principles of ISO/ASTM 52900 is an open-access engineering monograph and interactive instructional module edited and published by Prep4Uni.Online. This work provides an analytical, undergraduate-to-postgraduate treatment of the seven standardized process categories defined by ISO/ASTM 52900: Vat Photopolymerization (VPP), Powder Bed Fusion (PBF), Material Extrusion (MEX), Binder Jetting (BJT), Material Jetting (MJT), Directed Energy Deposition (DED), and Sheet Lamination (SHL).
Mapped to international engineering accreditation criteria under the Washington Accord (WA1–WA5) and the EUR-ACE framework, the publication moves past informal terminology to model the governing consolidation thermodynamics, energy-matter interactions, and mechanical boundary conditions of each manufacturing family.
Core Mathematical & Physical Principles Covered:
- Taxonomic Architecture: Systematic mapping of AM technologies according to raw feedstock phase (liquid, powder, solid/wire/sheet) and physical consolidation mechanisms.
- Vat Photopolymerization (VPP): The Beer-Lambert absorption law and Jacobs' cure depth equation () governing radical cross-linking and interlayer chemical coalescence.
- Powder Bed Fusion (PBF) & DED: Rosenthal moving point heat source solutions, melt pool aspect ratio controls, and volumetric energy density thresholds () balancing keyholing against lack-of-fusion balling.
- Binder Jetting (BJT): Young-Laplace capillary wetting pressure () driving green-state mechanical integrity and post-print furnace sintering shrinkage dynamics.
- Material Jetting (MJT): Dimensionless Ohnesorge number () fluid stability envelopes for satellite-free droplet formation.
- Solid-State Sheet Lamination (SHL): Ultrasonic acoustic welding consolidation kinematics preventing intermetallic embrittlement across dissimilar metals.
- Formative Assessment Suite: A three-tier validation battery comprising 8 foundational recall queries, 7 industrial process-debugging scenarios, and 6 quantitative engineering worked solutions.
Note: The full interactive web edition—featuring client-side HTML5 energy-matter simulation engines, live parameter sliders, and real-time consolidation feedback—is accessible at:https://prep4uni.online/stem/physical-technologies/industrial-and-manufacturing-technologies/additive-manufacturing-3d-printing/types-of-3d-printing-iso-astm-52900/
