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ADVANCES IN ELECTRONIC DEVICE TECHNOLOGY HAVE LED TO INCREASED PACKING DENSITIES WHILE POWER CONSUMPTION HAS DROPPED. IN GENERAL, THIS TREND IS BENEFICIAL TO AVIONICS AND SPACE APPLICATIONS EXCEPT THAT A NEW FAILURE MODE HAS ACCOMPANIED THIS MINIATURIZATION. IN HIGH ENERGY PARTICLE ENVIROMENTS, SUCH AS ENCOUNTERED IN SPACE, MICROELECTRONIC DEVICES HAVE BEEN SHOWN TO BE SUSCEPTIBLE TO TRANSIENT OR ...

EXTRINSIC PHOTOCONDUCTIVITY SEMICONDUCTOR SWITCHES (PCSS) BASED ON CVD DIAMOND-FILM (DF) HAS BEEN DEVELOPED. DIAMOND MATERIAL POSSESSES SEVERAL ADVANTAGES SUCH AS HIGH THERMAL CONDUCTIVITY AND HIGH BREAKDOWN VOLTAGES. THE PCSS BASED ON CVD DIAMOND CAN BE SUPERIOR THAN ITS COUNTERPARTS (GAAS OR SI) BY EXPLOITING THESE ADVANTAGES. CONVENTIONAL PCSS'S BASED ON GAAS SUFFER FROM PROBLEMS SUCH AS THERMA ...

ADVANCED STRUCTURAL MATERIALS USED IN THE FABRICATION OF SUBMARINES CAN SUSTAIN LARGE STRAINS DURING THE FORMATION PROCESS CAUSED BY EXPLOSIVE LOADINGS. THE COMPUTATIONAL SOLID MECHANICS COMMUNITY HAS RECENTRLY RECOGNIZED SERIOUS SHORTCOMINGS IN CALCULATIONS USING MATERIAL MODELS IN THIS LARGE STRAIN REGION. BECAUSE OF THE IMPORTANCE OF CALCULATIONS IN UNDERSTANDING THE SHOCK RESPONSE OF SUBMARINE ...

An approach for performing high fidelity modeling for blast and progressive collapse simulations of buildings will be developed. The modeling approach will allow complete simulations of building response to be performed within several days of computing time on desktop PCs. An 'easy to use' modeling interface will also be demonstrated in this effort. All response regimes will be addressed includi ...