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THERE IS AN ESTABLISHED NEED FOR A SIMPLE ROBUST TRANSDUCER TO MEASURE PARTICLE VELOCITY IN SEVERE BLAST AND SHOCK ENVIRONMENTS SUCH AS NUCLEAR AND HIGH EXPLOSIVE TESTS. A GAGE CONCEPT IS PROPOSED FOR DEVELOPMENT, BASED ON THE PROVEN MEASUREMENT PRINCIPLES USED IN THE HIGHLY SUCCESSFUL DX GAGE, BUT RECONFIGURED MECHANICALLY AND ELECTRICALLY TO WITHSTAND THE HARSH SHOCK ENVIRONMENTS. THE CONCEPT RE ...

HIGH RANGE (200,000 G) ACCELEROMETERS ARE THE ONLY TRANSDUCERS THAT PROVIDE THE REQUIRED LONG-TERM DATA IN THE ENVIRONMENTS OF INTEREST TO THE BLAST AND SHOCK COMMUNITY. THESE GAGES HAVE A VERY LARGE DYNAMIC RANGE AND NOISE OFTEN MASKS THE LATE TIME (BUT EXTREMELY IMPORTANT) DATA. WE PROPOSE TO DEVELOP A CLOSE COUPLED LOGARITHMIC GAIN SIGNAL CONDITIONING SYSTEM THAT WILL CORRECT THE LATE TIME NOIS ...

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THE NUMBER OF STABLE, INEXPENSIVE ANODE MATERIALS AVAILABLE FOR THE ELECTROSYNTHESIS OF CHEMICALS IS QUITE LIMITED. A SERIES OF HIGH SURFACE AREA CARBONS AND GRAPHITES ARE PROPOSED AS NEW ANODE MATERIALS FOR A VARIETY OF ELECTROCHEMICAL PROCESSES. THESE MATERIALS HAVE BEEN FOUND TO BE STABLE IN STRONGLY ACIDIC MEDIA AT HIGH OXIDATION POTENTIALS. THE EFFECTIVENESS OF THE HIGH SURFACE ELECTRODES VS. ...

CAUSTIC IS PRODUCED IN THE USA TO THE EXTENT OF 36,500T/DAY, MAINLY BY THE ELECTROLYSIS OF BRINE. THE ANODEPRODUCT, CHLORINE, IS UNDER CONSIDERABLE PRESSURE FOR ENVIRONMENTAL REASONS. FOR EXAMPLE, SALES ARE DECLINING TO THE PULP AND PAPER INDUSTRY BECAUSE OF TRACES OF DIOXIN FORMED IN PAPER PRODUCTS. ALSO, OZONE DESTROYING CARBON COMPOUNDS LIKE CHLOROFLUOROCARBONS AND METHYLCHLOROFORM ARE VERY LIK ...

CURRENT NUMERICAL COMPUTATIONS TO DESCRIBE NUCLEAR GROUND SHOCK ENVIRONMENTS, NUCLEAR CRATER FORMATION, IMPACT DYNAMICS AND PENETRATION MECHANISMS PRESENTLY EMPLOY EULERIAN-BASED FINITE DIFFERENCE CODES BECAUSE OF THEIR ABILITY TO MODEL THE MASS FLUX PHENOMENA IN TRACKING MATERIAL MOVEMENT THROUGH THE DISCRETIZED SPACE. THE FINITE DIFFERENCE CODES SUFFER IN COMPARISON TO FINITE ELEMENT CODES, HOWE ...

KTECH PROPOSES TO DEVELOP OPTICAL HOPKINSON BAR PRESSURE GAUGES FOR MEASUREMENT OF AIRBLAST ON UNDERGROUND NUCLEAR EVENTS. THE BARS WILL BE MADE OF SINGLE CRYSTAL SAPPHIRE WHICH HAS A MEASURED YIELD STRENGTH IN EXCESS OF 10 GPA. THESE GAUGES WILL HAVE A RISE TIME OF ABOUT 2 US OF DATA. DURING PHASE I, WE WILL CONSTRUCT AND CALIBRATE A STRESS-INDUCED BIREFRINGENCE GAUGE (SIBG) WHICH WOULD NEED NO E ...

DYNAMIC SEAL PERFORMANCE CAN BE IMPROVED BY FAVORABLY CONTROLLING THE FLUID PRESSURE BETWEEN THE TWO SLIDING SURFACES. FAVORABLE CONTROL OF FLUID PRESSURE IN THE MIXED FRICTION REGIME CAN LEAD TO REDUCED GROSS WEAR AND REDUCED FRICTION. IN TRADITIONAL DESIGN THE DETAIL OF THE MIXED FRICTION LUBRICATION IS LEFT TO THE INHERENT CHARACTERISTICSOF THE MATERIALS THEMSELVES. BY ALTERING MATERIAL PROPERT ...

UNDER THIS EFFORT, WE WILL DEVELOP A PORTABLE MEMORY TESTER UNIQUELY DESIGNED TO PERFORM THE TYPES OF TESTS REQUIRED FOR RADIATION EFFECTS CHARACTERIZATION. SPECIFICALLY, IT WILL PERFORM TESTS TO CHARATERIZE SINGLE EVENT PHENOMENA (SEP), TOTAL DOSE IONIZING EFFECTS, DOSE RATE, AND RAPID ANNEALING PHENOMENA. IT WILL COMBINE KEY FEATURES OF GENERAL PURPOSE ASIC TESTERS AND DEDICATED MEMORY TESTERS R ...