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A novel approach for controlling weld bead penetration is proposed. The methodology is distinguished from past techniques by use of: 1) a new and more accurate model of the weld pool dynamic behavior, 2) an improved method of sensing the weld pool oscillations, 3) a more efficient method of weld pool excitation, and 4) a model-based relation of pool dynamics, weld pool geometry, and equipment para ...

Feasibility of double layer capacitors (DLC) utilizing two types of molten salts as electrolytes will be investigated. These double layer capacitors involve two high surface area carbon electrodes, a separator and molten salt electrolytes. They will operate in the range of temperatures from room temperature to 260oC. A high single cell voltage and low cell resistance are anticipated for these doub ...

The GAO has reported to Congress that the loss due to fraudulent health care activity amounted to an estimated $84 billion in 1992. The ability to detect fraud and abuse is critical to the reduction of health care costs. The claims processing system will soon undergo rapid change with the introduction of rapid payment transaction processing systems. The emphasis on rapid turn around combined with ...

The primary objective of the proposed investigation is to develop numerical tools capable of producing scalable algorithms for efficient solution of a general class of large geophysical inverse problem in a massively parallel processing (MPP) computing environment. An example problem is the rigorous solution of the Earth's gravity field using massive satellite data. Currently, such a solution can ...

A research and development program is proposed for developing and implementing a low temperature, highly anisotropic, reliable, environmentally benign reactive ion etching (RIE) for complex-oxide films. The RIE Process will be optimized such that it is highly selective (e.g., >5), with high etch rates (e.g., >50 nm/min) and there i minimal or no damage to underlying layers. Furthermore, effort wil ...

A Phase I study is proposed to investigate the feasibility of applying a novel ray-tracing technique for electromagnetic propagation through the dense, refractive media of the earth's upper surface. Application of the technique to modern radar and navigation technology should result in the ability to conduct airborne surveillance of subsurface targets with three dimensional spatial resolution of l ...

Development is proposed for a breakthrough technique involving the use of electro-magnetic radiation to detect and measure thickness of non-conductive coatings on both metallic and non-metallic surfaces. The primary objective of the Phase I effort will be to prove that this approach can detect all forms of ice on aircraft structures and roadway surfaces. This system would permit detection and meas ...

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