Development of a Fiber Laser Welding Capability for the W76, MC4702 Firing Set (open access)

Development of a Fiber Laser Welding Capability for the W76, MC4702 Firing Set

Development work to implement a new welding system for a Firing Set is presented. The new system is significant because it represents the first use of fiber laser welding technology at the KCP. The work used Six-Sigma tools for weld characterization and to define process performance. Determinations of workable weld parameters and comparison to existing equipment were completed. Replication of existing waveforms was done utilizing an Arbitrary Pulse Generator (APG), which was used to modulate the fiber laser’s exclusive continuous wave (CW) output. Fiber laser weld process capability for a Firing Set is demonstrated.
Date: May 12, 2010
Creator: Samayoa, Jose
System: The UNT Digital Library
A Study to Develop an Industrial-Scale, Computer-Controlled High Magnetic Field Processing (HMFP) System to Assist in Commercializing the Novel, Enabling HMFP Manufacturing Technology (open access)

A Study to Develop an Industrial-Scale, Computer-Controlled High Magnetic Field Processing (HMFP) System to Assist in Commercializing the Novel, Enabling HMFP Manufacturing Technology

As the original magnet designer and manufacturer of ORNL’s 9T, 5-inch ID bore magnet, American Magnetics Inc. (AMI) has collaborated with ORNL’s Materials Processing Group’s and this partnership has been instrumental in the development of our unique thermo-magnetic facilities and expertise. Consequently, AMI and ORNL have realized that the commercial implementation of the High Magnetic Field Processing (HMFP) technology will require the evolution of robust, automated superconducting (SC) magnet systems that will be cost-effective and easy to operate in an industrial environment. The goal of this project and CRADA is to significantly expedite the timeline for implementing this revolutionary and pervasive cross-cutting technology for future US produced industrial components. The successful completion of this project is anticipated to significantly assist in the timely commercialization and licensing of our HMFP intellectual property for a broad spectrum of industries; and to open up a new market for AMI. One notable outcome of this project is that the ThermoMagnetic Processing Technology WON a prestigious 2009 R&D 100 Awards. This award acknowledges and recognizes our TMP Technology as one of the top 100 innovative US technologies in 2009. By successfully establishing the design requirements for a commercial scale magnetic processing system, this project effort …
Date: May 12, 2010
Creator: Lutdka, G. M. & Chourey, A. (American Magnetics, Inc.)
System: The UNT Digital Library
The Greatest Mathematical Discovery? (open access)

The Greatest Mathematical Discovery?

What mathematical discovery more than 1500 years ago: (1) Is one of the greatest, if not the greatest, single discovery in the field of mathematics? (2) Involved three subtle ideas that eluded the greatest minds of antiquity, even geniuses such as Archimedes? (3) Was fiercely resisted in Europe for hundreds of years after its discovery? (4) Even today, in historical treatments of mathematics, is often dismissed with scant mention, or else is ascribed to the wrong source? Answer: Our modern system of positional decimal notation with zero, together with the basic arithmetic computational schemes, which were discovered in India about 500 CE.
Date: May 12, 2010
Creator: Bailey, David H. & Borwein, Jonathan M.
System: The UNT Digital Library
Pressure, Chaotic Magnetic Fields and MHD Equilibria (open access)

Pressure, Chaotic Magnetic Fields and MHD Equilibria

Analyzes of plasma behavior often begin with a description of the ideal magnetohydrodynamic equilibrium, this being the simplest model capable of approximating macroscopic force balance. Ideal force balance is when the pressure gradient is supported by the Lorentz force, ∇p = j x B. We discuss the implications of allowing for a chaotic magnetic field on the solutions to this equation. We argue that the solutions are pathological and not suitable for numerical calculations. If the pressure and magnetic Field are continuous, the only non-trivial solutions have an uncountable infinity of discontinuities in the pressure gradient and current. The problems arise from the arbitrarily small length scales in the structure of the field, and the consequence of ideal force balance that the pressure is constant along the Field-lines, B • ∇p = 0. A simple method to ameliorate the singularities is to include a small but Finite perpendicular diffusion. A self-consistent set of equilibrium equations is described and some algorithmic approaches aimed at solving these equations are discussed.
Date: May 12, 2010
Creator: Hudson, S. R. & Nakajima, N.
System: The UNT Digital Library
Methods for Analyzing Electric Load Shape and its Variability (open access)

Methods for Analyzing Electric Load Shape and its Variability

Current methods of summarizing and analyzing electric load shape are discussed briefly and compared. Simple rules of thumb for graphical display of load shapes are suggested. We propose a set of parameters that quantitatively describe the load shape in many buildings. Using the example of a linear regression model to predict load shape from time and temperature, we show how quantities such as the load?s sensitivity to outdoor temperature, and the effectiveness of demand response (DR), can be quantified. Examples are presented using real building data.
Date: May 12, 2010
Creator: Price, Philip
System: The UNT Digital Library
Hydrogeologic Evaluation of a Ground-Source Cooling System at the BSF/CSF on the Battelle Campus: Final Report (open access)

Hydrogeologic Evaluation of a Ground-Source Cooling System at the BSF/CSF on the Battelle Campus: Final Report

This report documents both the field characterization activities and the numerical modeling effort at the BSF/CSF site to determine the viability of an open-loop ground source heat pump (GSHP). The primary purpose of the integrated field and modeling study was to determine far-field impacts related to a non-consumptive use water right for the well field containing four extraction and four injection wells. In the field, boreholes were logged and used to develop the geologic conceptual model. Hydraulic testing was performed to identify hydraulic properties and determine sustainable pumping rates. Estimates of the Ringold hydraulic conductivity (60-150 m/d) at the BSF/CSF site were consistent with the local and regional hydrogeology as well as estimates previously published by other investigators. Sustainable pumping rates at the extraction wells were variable (100 – 700 gpm), and confirmed field observations of aquifer heterogeneity. Field data were used to develop a numerical model of the site. Simulations assessed the potential of the well field to impact nearby contaminant plumes, neighboring water rights, and the thermal regime of nearby surface water bodies. Using steady-state flow scenarios in conjunction with particle tracking, a radius of influence of 400–600 m was identified around the well field. This distance was …
Date: May 12, 2010
Creator: Freedman, Vicky L.; Mackley, Rob D.; Waichler, Scott R.; Horner, Jacob A.; Moon, Thomas W.; Newcomer, Darrell R. et al.
System: The UNT Digital Library
The Uniformed and Overseas Citizens Absentee Voting Act: Overview and Issues (open access)

The Uniformed and Overseas Citizens Absentee Voting Act: Overview and Issues

This report discusses the Uniformed and Overseas Citizens Absentee Voting Act (UOCAVA) of 1986, which was enacted to improve absentee registration and voting for this group of voters and to consolidate existing laws.
Date: May 12, 2010
Creator: Coleman, Kevin J.
System: The UNT Digital Library
Post-Employment, "Revolving Door," Laws for Federal Personnel (open access)

Post-Employment, "Revolving Door," Laws for Federal Personnel

This report provides a brief discussion of the post-employment restrictions, often called "revolving door" laws, that are applicable to members, officers, and employees of Congress after they leave congressional service or employment.
Date: May 12, 2010
Creator: Maskell, Jack
System: The UNT Digital Library
Self-Insured Health Insurance Coverage (open access)

Self-Insured Health Insurance Coverage

This report provides background information on private health insurance coverage, state and federal regulation of private coverage, and self-insured health plans. It includes data on the prevalence of self-insurance and discusses the employer decision to self-insure. Lastly, it describes selected private health insurance provisions under federal health reform, and application of such provisions on self-insured plans.
Date: May 12, 2010
Creator: Fernandez, Bernadette
System: The UNT Digital Library
FY2010 Supplemental for Wars, Disaster Assistance, Haiti Relief, and Other Programs (open access)

FY2010 Supplemental for Wars, Disaster Assistance, Haiti Relief, and Other Programs

This report discusses the $64 billion in requested supplemental appropriations for FY2010, which includes $2.8 billion for Haiti earthquake-related reconstruction and foreign aid and $243 million for activities related to the Deepwater Horizon oil spill and more.
Date: May 12, 2010
Creator: Belasco, Amy; Else, Daniel H.; Lindsay, Bruce R.; Margesson, Rhoda; Nakamura, Kennon H. & Taft-Morales, Maureen
System: The UNT Digital Library