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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

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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

UNIVERSITY OF SOUTHERN CALIFORNIA

conventional structures
Conventional Structures

UNIVERSITY OF SOUTHERN CALIFORNIA

adobe structures
Adobe structures

UNIVERSITY OF SOUTHERN CALIFORNIA

multiple mobile robotics approach
Multiple mobile robotics approach

UNIVERSITY OF SOUTHERN CALIFORNIA

cc sass method
CC – Sass Method

UNIVERSITY OF SOUTHERN CALIFORNIA

it issues
IT issues

UNIVERSITY OF SOUTHERN CALIFORNIA

lunar construction from earth to moon
Lunar construction – From Earth to Moon

UNIVERSITY OF SOUTHERN CALIFORNIA

deployable cc
Deployable CC

UNIVERSITY OF SOUTHERN CALIFORNIA

nasa trials
NASA Trials

UNIVERSITY OF SOUTHERN CALIFORNIA

nozzle for corrugated internal structure
Nozzle for corrugated internal structure

UNIVERSITY OF SOUTHERN CALIFORNIA

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