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SFF Processes

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

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  1. SFF Processes B. Khoshnevis UNIVERSITY OF SOUTHERN CALIFORNIA

  2. 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

  3. 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

  4. Commercialized RP Technologies UNIVERSITY OF SOUTHERN CALIFORNIA

  5. Selective Inhibition Sintering (SIS) UNIVERSITY OF SOUTHERN CALIFORNIA

  6. Break-away surface Sintered powder Sintered powder Particles treated with sintering inhibitor The working of sintering inhibitor UNIVERSITY OF SOUTHERN CALIFORNIA

  7. Preliminary experiment Built in one afternoon with an electric heater filament and a light dimmer. UNIVERSITY OF SOUTHERN CALIFORNIA

  8. 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

  9. Use of a halogen lamp heater Drive electronics The Alpha Machine UNIVERSITY OF SOUTHERN CALIFORNIA

  10. Sintering by Nichrome Pivoting Heater UNIVERSITY OF SOUTHERN CALIFORNIA

  11. The Alpha Machine Desk top size UNIVERSITY OF SOUTHERN CALIFORNIA

  12. Driver software Interface UNIVERSITY OF SOUTHERN CALIFORNIA

  13. Sample Parts UNIVERSITY OF SOUTHERN CALIFORNIA

  14. 2.5 D Parts UNIVERSITY OF SOUTHERN CALIFORNIA

  15. 3D parts UNIVERSITY OF SOUTHERN CALIFORNIA

  16. Moldless Powder Metallurgy (MPM) UNIVERSITY OF SOUTHERN CALIFORNIA

  17. UNIVERSITY OF SOUTHERN CALIFORNIA

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  19. UNIVERSITY OF SOUTHERN CALIFORNIA

  20. The MPM-Metal machine UNIVERSITY OF SOUTHERN CALIFORNIA

  21. Elementary parts Simple copper part made with ceramic inhibitor Copper Part with complex geometry and sharp edges UNIVERSITY OF SOUTHERN CALIFORNIA

  22. Scaling upFrom Fabrication to Construction UNIVERSITY OF SOUTHERN CALIFORNIA

  23. UNIVERSITY OF SOUTHERN CALIFORNIA

  24. CCContour Crafting UNIVERSITY OF SOUTHERN CALIFORNIA

  25. 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

  26. UNIVERSITY OF SOUTHERN CALIFORNIA

  27. 3D ceramic parts UNIVERSITY OF SOUTHERN CALIFORNIA

  28. Ceramic and Plastic parts UNIVERSITY OF SOUTHERN CALIFORNIA

  29. Application in building construction Cavities made with CC and filled with concrete. UNIVERSITY OF SOUTHERN CALIFORNIA

  30. Imbedding Reinforcement UNIVERSITY OF SOUTHERN CALIFORNIA

  31. UNIVERSITY OF SOUTHERN CALIFORNIA

  32. Co-extrusion of outer and filler materials A 6DOF Nozzle Assembly UNIVERSITY OF SOUTHERN CALIFORNIA

  33. Conventional Structures UNIVERSITY OF SOUTHERN CALIFORNIA

  34. Adobe structures UNIVERSITY OF SOUTHERN CALIFORNIA

  35. Multiple mobile robotics approach UNIVERSITY OF SOUTHERN CALIFORNIA

  36. CC – The Sass Method UNIVERSITY OF SOUTHERN CALIFORNIA

  37. IT issues UNIVERSITY OF SOUTHERN CALIFORNIA

  38. Lunar construction – From Earth to Moon UNIVERSITY OF SOUTHERN CALIFORNIA

  39. Deployable CC UNIVERSITY OF SOUTHERN CALIFORNIA

  40. UNIVERSITY OF SOUTHERN CALIFORNIA

  41. NASA Trials UNIVERSITY OF SOUTHERN CALIFORNIA

  42. Nozzle for corrugated internal structure UNIVERSITY OF SOUTHERN CALIFORNIA

  43. Nozzle for corrugated internal structure UNIVERSITY OF SOUTHERN CALIFORNIA

  44. Adjustable width nozzle UNIVERSITY OF SOUTHERN CALIFORNIA

  45. Imbedding sensors and IT components Conductive concrete may be used to power densely imbedded sensors and actuators. UNIVERSITY OF SOUTHERN CALIFORNIA

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