Award Data

THIS EFFORT WILL FOCUS ON LOWERING COST AND IMPROVING PER- FORMANCE BY ELIMINATING CERAMIC AND PLASTIC PACKAGES PRES- USED IN SURFACE MOUNTING SEMICONDUCTOR CHIPS. THE CHIP WILL BE MOUNTED DIRECTLY TO A PREPARED FOOTPRINT ON THE PRINTED CIRCUIT BOARD (PCB) UTILIZING ADVANCED TAPE AUTO- MATED BONDING (TAB) AND NEW CHIP OVERCOATING MATERIALS. A COMMERCIALLY AVAILBLE VLSI SHIP WITH MORE THAN 60 I/O'S ...

CURRENTLY A PRIMARY DRAWBACK OF FIBER OPTIC SYSTEMS FOR MILITARY USE IS THE DIFFICULTY OF REPAIRING AND SERVICING THESE SYSTEMS. THE OBJECTIVE OF THIS PROJECT WILL BE TO DEVELOP TECHNIQUES FOR RAPID, RELIABLE FIELD REPAIR OF FIBER OPTIC CONNECTORS AND CABLES, TO PUT MAINTENANCE OF THESE SYSTEMS ON PAR WITH COPPER WIRE INTERCONNECTIONS.TECHNIQUES FOR RELIABLE HIGH PERFORMANCE TERMINATION OF GLASS F ...

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SUCCESSFUL OPERATION OF FUTURE NAVY AIRCRAFT PROPULSION SYSTEMS DEPENDS ON THE ATTAINMENT OF SIGNIFICANT ADVANCES IN COMBUSTION TECHNOLOGY. THE CONDITION OF HIGH FLIGHT-SPEED IMPOSES SEVERE STRAINS ON IGNITION RELIABILITY, FLAMEHOLDING, AND OVERALL COMBUSTION EFFICIENCY.A NOVEL RADIATIVE TECHNIQUE TO ALLEVIATE THESE PROBLEMS IS PROPOSED. THE IDEA IS TO SELECTIVELY IRRADIATE COMBUSTION SPECIES. THE ...

PHOTOLYSIS HAS BEEN IDENTIFIED AS A MEANS OF INITIATING AND ENHANCING GAS, LIQUID AND SOLID PHASE CHEMICAL REACTIVITY. A NUMBER OF RECENT OPPORTUNITIES FOR PHOTOCHEMICAL AUGMENTATION INVOLVE CHEMICAL SYSTEMS AT ELEVATED AND VARIABLE TEMPERATURE AND PRESSURE. CONSEQUENTLY, THERE EXISTS THE NEED TO GATHER FUNDAMENTAL PHOTOCHEMICAL DATA UNDER THE SEVERE CONDITIONS ATTENDANT TO GAS PHASE EXPLOSIVES, A ...

CURRENT ALUMINUM MATRIX COMPOSITES WHICH USE ALLOYS REQUIRING SOLUTION HEAT TREATING, QUNEHCING, AND ELEVATED TEMPERATURE AGING SUFFER FROM POOR TOUGHNESS. IT IS EXPECTED THE TOUGHNESS OF ALUMINUM MATRIX COMPOSITES CAN BE SIGNIFICANTLY INCREASED THROUGH THE USE OF 5000 SERIES ALLOYS WHICH HAVE HIGH WORK HARDENING RATES AND GOOD DUCTILITY. ANY LOSS IN COMPOSITE STRENGTH CAN BE COMPENSATED BY ADJUST ...

METAL MATRIX COMPOSITES (MMC) OFFER COMPARABLE MICROCREEP RATES (MCR) AT A FRACTION OF THE COST FOR SPECIALLY PROCESSED ALLOYS IN STABLE MEMBER APPLICATIONS. RESIDUAL STRESSES ARE IMPORTANT TO CONTROL WHEN PARTS PER MILLION OF STRAIN ARE A CONCERN. LARGE VOLUME FRACTIONS OF CERAMIC REINFORCEMENT IN COMPOSITES WILL CONTRIBUTE TO BOTH THE MACRO AND MICRO RESIDUAL STRESSES. THE PROPOSED PROGRAM WILL ...

THIS PROPOSAL DESCRIBES THE EXTENSION OF DIGITAL SPECTROMETRY TO THE MEASUREMENT OF THE ANISOTROPIC PERMITTIVITIES OF PIEZOELECTRIC MATERIALS. WE SHOW THAT FRESNEL'S EQUATIONS FOR ANISOTROPIC MEDIA, AS IS THE CASE WITH ISOTROPIC MEDIA, ALSO SIMPLIFY FOR AN INCIDENT ANGLE OF 45 DEG. IN DIGITAL SPECTROMETRY FOR ISOTROPIC MEDIA THE SAMPLE IS FIXED AND THE POLARIZATION STATE OF THE INCIDENT BEAM IS RO ...

SPECIAL SIGNAL PROCESSING TECHNIQUES APPENDED ON TO REMOTE SENSING CAPABILITIES ARE DESCRIBED FOR "PEEKING" INSIDE "TEL" CARGOS.

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