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Environmentally Assisted Cracking in Light Water Reactors : Semiannual Report, July 2000 - December 2000.

Description: This report summarizes work performed by Argonne National Laboratory on fatigue and environmentally assisted cracking (EAC) in light water reactors (LWRs) from July 2000 to December 2000. Topics that have been investigated include (a) environmental effects on fatigue S-N behavior of primary pressure boundary materials, (b) irradiation-assisted stress corrosion cracking (IASCC) of austenitic stainless steels (SSs), and (c) EAC of Alloys 600 and 690. The fatigue strain-vs.-life data are summarize… more
Date: April 1, 2002
Creator: Chopra, O. K.; Chung, H. M.; Gruber, E. E.; Shack, W. J.; Soppet, W. K.; Strain, R. V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final Project Report G-Plus Windshield Coatings

Description: Samples of Sungate windshield material provided by PPG were analyzed to ascertain failure mechanisms observed at the interface between a copper busbar and the electrically conductive coating in use. Samples of “failed” windshield material were characterized using optical and electron microscopy, as well as surface analysis methods. These were compared to corresponding samples of “good” coatings. The primary failure mechanism of the coated windshield appears to be related to electrical discharge… more
Date: August 1, 2002
Creator: Matson, Dean W. & Koram, Kwaku
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium and Aluminosilicate Surface Precipitation Tests

Description: The 2H evaporator at the Savannah River Site has been used to treat an aluminum-rich waste stream from canyon operations and a silicon-rich waste stream from the Defense Waste Processing Facility. The formation of aluminosilicate scale in the evaporator has caused significant operational problems. Because uranium has been found to accumulate in the aluminosilicate solids, the scale deposition has introduced criticality concerns as well. The objective of the tests described in this report is to … more
Date: November 27, 2002
Creator: Hu, M.Z.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pressure gradient passivation of carbonaceous material normally susceptible to spontaneous combustion

Description: This invention is a process for the passivation or deactivation with respect to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then r… more
Date: January 29, 2002
Creator: Ochs, Thomas L.; Sands, William D.; Schroeder, Karl; Summers, Cathy A. & Utz, Bruce R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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One-piece, composite crucible with integral withdrawal/discharge section

Description: A one-piece, composite open-bottom casting mold with integral withdrawal section is fabricated by thermal spraying of materials compatible with and used for the continuous casting of shaped products of reactive metals and alloys such as, for example, titanium and its alloys or for the gas atomization thereof.
Date: July 30, 2002
Creator: Besser, Matthew; Terpstra, Robert L. (Iowa State Univ., Ames, IA); Sordelet, Daniel J.; Anderson, Iver E.; Hartman, Alan D.; Argetsinger, Edward R. et al.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Mechanism and Estimation of Fatigue Crack Initiation in Austenitic Stainless Steels in LWR Environments.

Description: The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components. Figures I-9.1 through I-9.6 of Appendix I to Section III of the Code specify fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain-vs.-life ({var_epsilon}-N) data illustrate potentially significant effects of LWR coolant environments on the f… more
Date: August 1, 2002
Creator: Chopra, O. K. & Technology, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Irradiation Embrittlement of A508 Gr 4N and Comparison to Other Low-Alloy Steels

Description: A508 Gr 4N has improved fracture toughness because of the addition of 3% nickel, compared to typical low alloy steels which have less than 1% nickel. However, there is an expectation in much of the recent literature, based mostly on low-alloy steels with nickel below 1%, that irradiation embrittlement will increase with increasing nickel (Ni) content. In contrast, the raw irradiation test data show that ASTM A508 Grade 4N containing up to 3.7% nickel, 0.1% Cu and 0.01% P does not show enhanced … more
Date: June 17, 2002
Creator: G.L. Wire, W. J. Beggs and T.R. Leax
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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OIT Wireless Telemetry for Industrial Applications

Description: The need for advanced wireless technology has been identified in the National Research Council publication (1) ''Manufacturing Process Controls for the Industries of the Future as a Critical Technology for the Future''. The deployment challenges to be overcome in order for wireless to be a viable option include: (1) eliminating interference (assuring reliable communications); (2) easing the deployment of intelligent, wireless sensors; (3) developing reliable networks (robust architectures); (4)… more
Date: September 3, 2002
Creator: Manges, WW
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Apparatus and Method for Increasing the Diameter of Metal Alloy Wires Within a Molten Metal Pool

Description: In a dip forming process the core material to be coated is introduced directly into a source block of coating material eliminating the need for a bushing entrance component. The process containment vessel or crucible is heated so that only a portion of the coating material becomes molten, leaving a solid portion of material as the entrance port of, and seal around, the core material. The crucible can contain molten and solid metals and is especially useful when coating core material with reacti… more
Date: January 29, 2002
Creator: Hartman, Alan D.; Argetsinger, Edward R.; Hansen, Jeffrey S.; Paige, Jack I.; King, Paul E. & Turner, Paul C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Development of a Versatile Laser Ultrasonic System and Application to On-Line Measurement for Process Control of Wall Thickness and Eccentrictiy of Steel Seamless Mechanical Tubing

Description: Researchers at the Timken Company conceived a project to develop an on-line instrument for wall thickness measurement of steel seamless mechanical tubing based on laser ultrasonic technology. The instrument, which has been installed and tested at a piercing mill, provides data on tube eccentricity and concentricity. Such measurements permit fine-tuning of manufacturing processes to eliminate excess material in the tube wall and therefore provide a more precisely dimensioned product for their cu… more
Date: April 24, 2002
Creator: Kisner, R. A.; Kercel, S. W.; Damiano, B.; Bingham, P. R.; Gee, T. F.; Tucker, R. W. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Proposed Reference Spectral Irradiance Standards to Improve Photovoltaic Concentrating System Design and Performance Evaluation: Preprint

Description: This conference paper describes the American Society for Testing and Materials (ASTM), the International Electrotechnical Commission (IEC), and the International Standards Organization (ISO) standard solar terrestrial spectra (ASTM G-159, IEC-904-3, ISO 9845-1) provide standard spectra for photovoltaic performance applications. Modern terrestrial spectral radiation models and knowledge of atmospheric physics are applied to develop suggested revisions to update the reference spectra. We use a mo… more
Date: May 1, 2002
Creator: Myers, D. R.; Emery, K. E. & Gueymard, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a Waste Treatment Process to Deactivate Reactive Uranium Metal and Produce a Stable Waste Form

Description: This paper highlights the results of initial investigations conducted to support the development of an integrated treatment process to convert pyrophoric metallic uranium wastes to a non-pyrophoric waste that is acceptable for land disposal. Several dissolution systems were evaluated to determine their suitability to dissolve uranium metal and that yield a final waste form containing uranium specie(s) amenable to precipitation, stabilization, adsorption, or ion exchange. During initial studies,… more
Date: January 17, 2002
Creator: Gates-Anderson, D D; Laue, C A & Fitch, T E
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Compressed Air System Improvement Project Saves Foundry Energy and Increases Production

Description: This case study highlights International Truck and Engine Corporation's optimization project on the compressed air system that serves its foundry, Indianapolis Casting Corporation. Due to the project's implementation, the system's efficiency was greatly improved, allowing the foundry to operate with less compressor capacity, which resulted in reduced energy consumption, significant maintenance savings, and more reliable production.
Date: May 1, 2002
Creator: United States. Department of Energy. Office of Energy Efficiency and Renewable Energy. Office of Industrial Technologies.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Post-Lamination Manufacturing Process Automation for Photovoltaic Modules: Final Subcontract Report, April 1998 - April 2002

Description: This report describes the automated systems developed for PV module assembly and testing processes after lamination. These processes are applicable to a broad range of module types, including those made with wafer-based and thin-film solar cells. Survey data and input from module manufacturers gathered during site visits were used to define system capabilities and process specifications. Spire completed mechanical, electrical, and software engineering for four automation systems: a module edge … more
Date: November 1, 2002
Creator: Nowlan, M. J.; Murach, J. M.; Sutherland, S. F.; Miller, D. C.; Moore, S. B. & Hogan, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low Cost Glass and Glass-Ceramic Substrates for Thin-Film Silicon Solar Cells: Final Subcontract Report, 25 January 2001

Description: This report describes how Cornell University researchers developed several low-cost and simple barrier layers and tested their effectiveness both analytically (by SIMS) and by evaluating the electrical characteristics of devices fabricated on barrier-coated substrates. Devices fabricated included both majority-carrier devices (thin-film transistors) and minority-carrier devices (p-i-n junction diodes simulating solar cells) using various deposition techniques including the chemical vapor deposi… more
Date: July 1, 2002
Creator: Ast, D.; Nemchuk, N. & Krasula, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparison Between Keyhole Weld Model and Laser Welding Experiments

Description: A series of laser welds were performed using a high-power diode-pumped continuous-wave Nd:YAG laser welder. In a previous study, the experimental results of those welds were examined, and the effects that changes in incident power and various welding parameters had on weld geometry were investigated. In this report, the fusion zones of the laser welds are compared with those predicted from a laser keyhole weld simulation model for stainless steels (304L and 21-6-9), vanadium, and tantalum. The … more
Date: September 23, 2002
Creator: Wood, B C; Palmer, T A & Elmer, J W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electronic Structure and Doping of P-Type Transparent Conducting Oxides: Preprint

Description: Transparent conducting oxides (TCOs) are a group of materials that are widely used in solar cells and other optoelectronic devices. Recently, Cu-containing p-type TCOs such as MII Cu2 O2 (MIII=Mg, Ca, Sr, Ba) and CuMIII O2 (MIII=Al, Ga, In) have been proposed. Using first-principles band structure methods, we have systematically studied the electronic and optical properties of these p-type transparent oxides. For MII Cu2 O2 , we predict that adding a small amount of Ca into Sr Cu2 O2 can increa… more
Date: May 1, 2002
Creator: Wei, S.-H.; Nie, X. & Zhang, S. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Physical Properties of HWCVD Microcrystalline Silicon Thin Films: Preprint

Description: This conference paper describes Microcrystalline silicon films were grown with different thicknesses and different hydrogen dilution ratios on glass and Si substrates. Some films were deposited with a seed layer, whereas others were deposited directly on the substrate. We used atomic force microscopy, scanning electron microscopy, and X-ray diffraction to study the morphology and crystalline structure of the samples. We did not find a significant influence of the different substrates on the mor… more
Date: May 1, 2002
Creator: Moutinho, H. R.; Romero, M. J.; Jiang, C. S.; Xu, Y.; Nelson, B. P.; Jones, K. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Sputter Deposition of Metallic Sponges

Description: Metallic films are grown with a sponge-like morphology in the as-deposited condition using planar magnetron sputtering. The morphology of the deposit is characterized by metallic continuity in three dimensions with continuous porosity on the sub-micron scale. The stabilization of the metallic sponge is directly correlated with a limited range for the sputter deposition parameters of working gas pressure and substrate temperature. This sponge-like morphology augments the features as generally un… more
Date: January 18, 2002
Creator: Jankowski, Alan Frederic & Hayes, Jeffrey P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pressure Measurements in a PBX 9501 Gauged Acceptor When Impacted by a Steel Plate that is Accelerated by a Thermally Cooked Off PBX 9501 Charge

Description: Measuring the violence of a thermal explosion of a cased explosive is important for evaluating safety issues of explosive devices in fires. A sympathetic initiation scenario was studied here where a 9.0 cm diameter by 2.5 cm thick disc of PBX 9501 donor charge encased in a 304 stainless steel assembly was heated on top and bottom flat surfaces until it thermally exploded. The initial heating rate at the metal/explosive interface was 5 C per minute until it reaches 170 C; then this temperature i… more
Date: March 11, 2002
Creator: Forbes, J W; Garcia, F; Urtiew, P A; Vandersall, K S; Greenwood, D W & Tarver, C M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Molecular Dynamics Simulations of Coulomb Explosion

Description: A swift ion creates a track of electronic excitations in the target material. A net repulsion inside the track can cause a ''Coulomb Explosion'', which can lead to damage and sputtering of the material. Here we report results from molecular-dynamics (MD) simulations of Coulomb explosion for a cylindrical track as a function of charge density and neutralization/quenching time, {tau}. Screening by the free electrons is accounted for using a screened Coulomb potential for the interaction among cha… more
Date: May 17, 2002
Creator: Bringa, E M
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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