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SFF Processes. B. Khoshnevis. Application Areas. Small batch actual production of parts or assemblies Prototyping of products to test functionality, fit for assembly, marketability, and other factors
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SFF Processes B. Khoshnevis UNIVERSITY OF SOUTHERN CALIFORNIA
Application Areas • Small batch actual production of parts or assemblies • Prototyping of products to test functionality, fit for assembly, marketability, and other factors • Mold, die, and other tool making for other manufacturing processes such as casting, extrusion, etc. • Solid imaging of 3D data in domains such as mathematics, chemistry, medicine, etc. • Sculpturing and other forms of art work. UNIVERSITY OF SOUTHERN CALIFORNIA
Advantages • Possibility of unattended operation • Significant reduction in product design cycle • Ability to produce parts with unlimited geometrical complexity • Radically new possibility of designing the internal structure of parts • Possibility of wasteless and environmentally sound fabrication UNIVERSITY OF SOUTHERN CALIFORNIA
Commercialized RP Technologies UNIVERSITY OF SOUTHERN CALIFORNIA
Selective Inhibition Sintering (SIS) UNIVERSITY OF SOUTHERN CALIFORNIA
Break-away surface Sintered powder Sintered powder Particles treated with sintering inhibitor The working of sintering inhibitor UNIVERSITY OF SOUTHERN CALIFORNIA
Preliminary experiment Built in one afternoon with an electric heater filament and a light dimmer. UNIVERSITY OF SOUTHERN CALIFORNIA
Sintered layer Holes due to inhibitor Printed inhibitor Separated sections Preliminary Results Single-layer experiments with polystyrene powder Inhibitors: - Cooking oil - Water+alcohol UNIVERSITY OF SOUTHERN CALIFORNIA
Use of a halogen lamp heater Drive electronics The Alpha Machine UNIVERSITY OF SOUTHERN CALIFORNIA
Sintering by Nichrome Pivoting Heater UNIVERSITY OF SOUTHERN CALIFORNIA
The Alpha Machine Desk top size UNIVERSITY OF SOUTHERN CALIFORNIA
Driver software Interface UNIVERSITY OF SOUTHERN CALIFORNIA
Sample Parts UNIVERSITY OF SOUTHERN CALIFORNIA
2.5 D Parts UNIVERSITY OF SOUTHERN CALIFORNIA
3D parts UNIVERSITY OF SOUTHERN CALIFORNIA
Moldless Powder Metallurgy (MPM) UNIVERSITY OF SOUTHERN CALIFORNIA
The MPM-Metal machine UNIVERSITY OF SOUTHERN CALIFORNIA
Elementary parts Simple copper part made with ceramic inhibitor Copper Part with complex geometry and sharp edges UNIVERSITY OF SOUTHERN CALIFORNIA
Scaling upFrom Fabrication to Construction UNIVERSITY OF SOUTHERN CALIFORNIA
CCContour Crafting UNIVERSITY OF SOUTHERN CALIFORNIA
Flow analysis for nozzle design Comparison of flow patterns with simulation result and actual process. Side views with a square orifice (top pictures), and side views with an elliptical orifice (bottom pictures) UNIVERSITY OF SOUTHERN CALIFORNIA
3D ceramic parts UNIVERSITY OF SOUTHERN CALIFORNIA
Ceramic and Plastic parts UNIVERSITY OF SOUTHERN CALIFORNIA
Application in building construction Cavities made with CC and filled with concrete. UNIVERSITY OF SOUTHERN CALIFORNIA
Imbedding Reinforcement UNIVERSITY OF SOUTHERN CALIFORNIA
Co-extrusion of outer and filler materials A 6DOF Nozzle Assembly UNIVERSITY OF SOUTHERN CALIFORNIA
Conventional Structures UNIVERSITY OF SOUTHERN CALIFORNIA
Adobe structures UNIVERSITY OF SOUTHERN CALIFORNIA
Multiple mobile robotics approach UNIVERSITY OF SOUTHERN CALIFORNIA
CC – The Sass Method UNIVERSITY OF SOUTHERN CALIFORNIA
IT issues UNIVERSITY OF SOUTHERN CALIFORNIA
Lunar construction – From Earth to Moon UNIVERSITY OF SOUTHERN CALIFORNIA
Deployable CC UNIVERSITY OF SOUTHERN CALIFORNIA
NASA Trials UNIVERSITY OF SOUTHERN CALIFORNIA
Nozzle for corrugated internal structure UNIVERSITY OF SOUTHERN CALIFORNIA
Nozzle for corrugated internal structure UNIVERSITY OF SOUTHERN CALIFORNIA
Adjustable width nozzle UNIVERSITY OF SOUTHERN CALIFORNIA
Imbedding sensors and IT components Conductive concrete may be used to power densely imbedded sensors and actuators. UNIVERSITY OF SOUTHERN CALIFORNIA
