A NOVEL CUTTING TECHNIQUE FOR DEEP OCEAN APPLICATIONS

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 21788
Amount: $48,336.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
21414 68th Ave S, Kent, WA, 98032
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Mohamed Hashish
 (206) 872-9500
Business Contact
Phone: () -
Research Institution
N/A
Abstract
TRADITIONAL ROCK CUTTING, CORING, AND METAL CUTTING METHODS HAVE SERIOUS TECHNICAL, ENVIRONMENTAL, AND SAFETY LIMITATIONS FOR UNDERWATER APPLICATIONS. HIGH-PRESSURE ABRASIVE-WATERJET (AWJ) CUTTING IS DEMONSTRATED AS A REVOLUTIONARY TECHNIQUE FOR CUTTING ANY MATERIAL AT OCEAN DEPTHS UP TO 20,000 FEET. THIS METHOD IS MARGINAL IN PERFORMANCE AND OPERATIONAL RELIABILITY, HOWEVER, AND FURTHER IMPROVEMENTS ARE NOT EXPECTED. THIS PROJECT ADDRESSES A NOVEL CONCEPT FOR CUTTING WITH HIGH-VELOCITY ABRASIVE PARTICLE BEAMS. IN THIS CONCEPT, THE ABRASIVES ARE DIRECTLY PUMPED THROUGH A NOZZLE, RATHER THAN ENTRAINED AS IN AN AWJ NOZZLE, TO FORM A HIGH-PRESSURE ABRASIVE SLURRY JET (ASJ). IT HAS BEEN DEMONSTRATED THAT CUTTING RATES (UNDER ATMOSPHERIC CONDITIONS) CAN BE INCREASED FIVEFOLD COMPARED TO AN AWJ USING THIS NEW METHOD. A FEASIBILITY STUDY ON USING ASJS FOR UNDERWATER CUTTING IS BEING CONDUCTED. A HIGH-PRESSURE (50,000 SPI) ABRASIVE SLURRY PUMP IS USED IN THIS INVESTIGATION. PARAMETRIC CUTTING TESTS ARE BEING PERFORMED ON ROCKS AND METALS. ANALYTICAL STUDIES ARE USED TO SUPPORT THE WORK. A CONCEPTUAL DESIGN FOR AN OCEAN FLOOR CUTTING SYSTEM IS BEING PREPARED.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government