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SELECTIVE LASER SINTERING

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
7557
Program Year/Program:
1988 / SBIR
Agency Tracking Number:
7557
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Nova Graphics International
1515 Capital Of Tx Hwy South Suite 300 Austin, TX 78746
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1988
Title: SELECTIVE LASER SINTERING
Agency: NSF
Contract: N/A
Award Amount: $47,000.00
 

Abstract:

THREE-DIMENSIONAL PARTS OF GENERAL SHAPE CAN BE PRODUCED DIRECTLY FROM A COMPUTER DATABASE WITHOUT PART-SPECIFIC TOOLING OR HUMAN INTERVENTION BY A NEW PROCESS CALLED SELECTIVE LASER SINTERING. EACH BUILT-UP LAYER CORRESPONDS TO A CROSS-SECTION OF THE PART. A THIN LAYER OF POWDER IS FIRST DEPOSITED INTO A CONTAINER. THE POWDER SURFACE IS RASTER-SCANNED WITH A HIGH-POWER LASER BEAM FROM ABOVE. BEAM INTENSITY IS MODULATED TO FUSE POWDER IN AREAS TO BE OCCUPIED BY THE PART AT THAT PARTICULAR CROSS-SECTION. IN AREAS NOT SINTERED, THE POWDER REMAINS LOOSE AND MAY BE REMOVED ONCE THE PART IS COMPLETE. SUCCESSIVE LAYERS OF POWDER ARE THEN DEPOSITED AND RASTER-SCANNED UNTIL THE ENTIRE PART IS PRODUCED. EACH LAYER IS SINTERED DEEPLY ENOUGH TO FUSE IT TO THE UNDERLYING LAYER. A GENERAL THREE-DIMENSIONAL OBJECT CAN BE PRODUCED IN THIS WAY DIRECTLY FROM A SOLIDS MODELING OR OTHER THREE-DIMENSIONAL COMPUTER DATABASE. A CLOSELY-COUPLED THEORETICAL AND EXPERIMENTAL INVESTIGATIONBUILDING ON THE RESULTS OF EARLIER NSF-SPONSORED GRADUATE RESEARCH BY THE PRINCIPAL INVESTIGATOR WILL BE PERFORMED TO DEFINE AND QUANTIFY THE PERFORMANCE ENVELOPE OF THE NEW PROCESS. THE PHASE I RESEARCH PLAN WILL BE IMPLEMENTED TO ASSESS THE EFFECTS OF DIFFERENT INPUT MATERIALS, FOAMING AGENTS, AND PLASTICIZERS ON ACHIEVABLE DIMENSIONAL TOLERANCE, STRENGTH, ENERGY DEMAND, AND PRODUCTION RATE.

Principal Investigator:

Carl r deckard
0

Business Contact:

Small Business Information at Submission:

Nova Graphics International
1515 Capital Of Tx Hwy South Suite 300 Austin, TX 78746

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No