Abstract:Current two-phase computer codes for modelling of spacecraft thermal management systems or experiments are inadequate in many respects. Their multiphase models are inaccurate, outmoded, or poorly implemented. They are difficult to use without extensive training, and computation times are measured in… more
Abstract:Present CFD software provides only crude or no estimates of uncertainty in the calculated results. To bring error analysis in CFD to the level of development achieved for experimental data requires a systematic application of error analysis principles. This project proposes to develop an error… more
Abstract:Our goal is a major advancement in the life cycle of rechargeable, solid-state lithium/polymer batteries -- a factor of ten improvement to 1000's of recharge cycles. We will achieve this goal by attacking various problems of degradation at the electrode/ electrolyte interfaces, a primary factor in… more
Abstract:In this program Creare will develop test data and design methods for confident design of efficient cooling systems for turbine disks in aircraft gas turbine engines. Cooling systems must prevent ingress of hot combustion gases into the cavity between the turbine disk and its stator when there is an… more
Abstract:SINGLE CRYSTAL SILICON WAFERS ARE ESSENTIAL FOR INTEGRATED CIRCUIT (IC) MANUFACTURING. RESEARCHERS ARE DEVELOPING A METHOD TO FABRICATE THESE WAFERS DIRECTLY IN SHEET FORM IN CONTRAST TO CYLINDRICAL BOULES CURRENTLY UTILIZED. THE TECHNIQUE REDUCES THE COMPLEXITY AND COST OF THE CRYSTAL GROWTH… more
Abstract:The cost of processing erroneous or incomplete medical care claims, or of non-reimbursed services due to incorrect, unknown or incomplete insurance information, represents a considerable out-of pocket expense for every health care provider. The proposed project will develop a system for providing… more
Abstract:Fluid temperature in a piping system can be accurately determined non-intrusively with pipe surface temperature and its correction factor. A new technique, called flux augmented surface temperature (FAST) method is proposed to determine the correction factor directly in real time, in situ. The… more
Abstract:Excimer lasers have been used commercially in manufacturing environments for only about four years. Their utility lies in the short wavelength and high resolution of the output, making it possible to realize both high resolution features and high aspect ratios, with very precise control over the… more
Abstract:The Phase I project will demonstrate the feasibility of producing Mullite (Al6Si2O13) fibers using the Saphikon Edge-defined, Film-fed Growth (EFG) process. The reactivity of mullite melts ranging from 60 to 80 mole percent will be evaluated using crystal growth components fabricated from iridium,… more
Abstract:Utilization of the promising Erbium: YAG laser has been hindered by the lack of a truly effectiveoptical fiber delivery system. The innovation proposed is to demonstrate sapphire optical fibers as aneffective means of delivering 2.94 micron Erbium: YAG laser energy in pre-clinical in vitro… more
Abstract:Identification and monitoring of voice information has been seen to have multiple DOD and commercial applications. The proposed program will develop a non-realtime prototype of a text-independent speaker identification system, which is based on a nonparametric classifier, and spectral features which… more
Abstract:SureObjects proposes specifying and implementing a practical development environment for creating formal algebraic specifications of the semantics of potentially distributed objects and functions and subsequently automatically generating the source code corresponding to those specifications. Such… more
Abstract:TODAY, PROSTHETISTS HAVE DIFFICULTY IN OPTIMIZING LOWER-LIMB AMPUTEES' SOCKET FIT BECAUSE SCIENTIFIC MEANS FOR ESTABLISHING SOCKET GEOMETRY ARE LACKING. A PRECISE FIT TO THE AMPUTEE'S STUMP IS THE MOST CRITICAL FEATURE OF A LOWER-LIMB PROSTHESIS. FURTHER, WHEN THE AMPUTEE'S STUMP VOLUME CHANGES,… more
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