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USC SFF Process. B. Khoshnevis. Commercialized RP Technologies. Selective Inhibition Sintering (SIS). Break-away surface. Sintered powder. Sintered powder. Particles treated with sintering inhibitor. The working of sintering inhibitor. Preliminary experiment.

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Usc sff process

USC SFF Process

B. Khoshnevis

UNIVERSITY OF SOUTHERN CALIFORNIA


Commercialized rp technologies
Commercialized RP Technologies

UNIVERSITY OF SOUTHERN CALIFORNIA


Selective inhibition sintering sis
Selective Inhibition Sintering (SIS)

UNIVERSITY OF SOUTHERN CALIFORNIA


The working of sintering inhibitor

Break-away surface

Sintered

powder

Sintered powder

Particles treated with sintering inhibitor

The working of sintering inhibitor

UNIVERSITY OF SOUTHERN CALIFORNIA


Preliminary experiment
Preliminary experiment

Built in one afternoon with an electric heater filament and a light dimmer.

UNIVERSITY OF SOUTHERN CALIFORNIA


Preliminary results

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


The alpha machine

Use of a halogen lamp heater

Drive electronics

The Alpha Machine

UNIVERSITY OF SOUTHERN CALIFORNIA


Sintering by nichrome pivoting heater
Sintering by Nichrome Pivoting Heater

UNIVERSITY OF SOUTHERN CALIFORNIA


The alpha machine1
The Alpha Machine

Desk top size

UNIVERSITY OF SOUTHERN CALIFORNIA


Driver software
Driver software

Interface

UNIVERSITY OF SOUTHERN CALIFORNIA


Sample parts
Sample Parts

UNIVERSITY OF SOUTHERN CALIFORNIA


2 5 d parts
2.5 D Parts

UNIVERSITY OF SOUTHERN CALIFORNIA


3d parts
3D parts

UNIVERSITY OF SOUTHERN CALIFORNIA


Moldless powder metallurgy mpm
Moldless Powder Metallurgy (MPM)

UNIVERSITY OF SOUTHERN CALIFORNIA





The mpm metal machine
The MPM-Metal machine

UNIVERSITY OF SOUTHERN CALIFORNIA


Elementary parts
Elementary parts

Simple copper part made with ceramic inhibitor

Copper Part with complex geometry and sharp edges

UNIVERSITY OF SOUTHERN CALIFORNIA


Scaling up from fabrication to construction
Scaling upFrom Fabrication to Construction

UNIVERSITY OF SOUTHERN CALIFORNIA



Cc contour crafting

CCContour Crafting

UNIVERSITY OF SOUTHERN CALIFORNIA


Flow analysis for nozzle design
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
3D ceramic parts

UNIVERSITY OF SOUTHERN CALIFORNIA


Ceramic and plastic parts
Ceramic and Plastic parts

UNIVERSITY OF SOUTHERN CALIFORNIA


Application in building construction
Application in building construction

Cavities made with CC and filled with concrete.

UNIVERSITY OF SOUTHERN CALIFORNIA


Imbedding reinforcement
Imbedding Reinforcement

UNIVERSITY OF SOUTHERN CALIFORNIA



Co extrusion of outer and filler materials a 6dof nozzle assembly
Co-extrusion of outer and filler materials A 6DOF Nozzle Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Nsf 03 nozzle
NSF-03 Nozzle Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Conventional structures
Conventional Structures Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Adobe structures
Adobe structures Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Multiple mobile robotics approach
Multiple mobile robotics approach Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Cc sass method
CC – Sass Method Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


It issues
IT issues Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Lunar construction from earth to moon
Lunar construction – AssemblyFrom Earth to Moon

UNIVERSITY OF SOUTHERN CALIFORNIA


Deployable cc
Deployable CC Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA



Nasa trials
NASA Trials Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


Nozzle for corrugated internal structure
Nozzle for corrugated internal structure Assembly

UNIVERSITY OF SOUTHERN CALIFORNIA


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