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Strain concentration factor as a function of strain in a design application

Description: This paper presents results for a detailed inelastic finite element analysis for a part of the Clinch River Breeder Reactor Control Rod Drive Mechanism. The analysis results indicate that plastic strain concentration factors may in fact be less than corresponding elastic strain concentration factors for nominal strains as low as .2%. This is particularly insightful in that it is presently common practice to approximate inelastic strain concentration factors as the square of the elastic concentrā€¦ more
Date: January 1, 1981
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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CASPER: A Generalized Program for Plotting and Scaling Data

Description: A Fortran subroutine was written to scale floating-point data and generate a magnetic tape to plot it on the Calcomp 570 digital plotter. The routine permits a great deal of flexibility, and may be used with any type of FORTRAN or FAP calling program. A simple calling program was also written to permit the user to read in data from cards and plot it without any additional programming. Both the Fortran and binary decks are available. (auth)
Date: January 30, 1963
Creator: Lietzke, M.P. & Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Critical mass control specifications: Hoods 7-C and 9-B

Description: This report discusses the critical mass control specifications for Hoods 7-C and 9-B have become obsolete due to needed storage within the confines of Hood 9-C, and equipment modifications. Nuclear safety in Hood 7-C and 9-B depends almost entirely on controlling the mass and geometry of the plutonium compounds not confined by the processing equipment. Generally, the processing vessels and associated piping are designed and arranged in the hood to be critically safe at full operating capacity. ā€¦ more
Date: January 23, 1961
Creator: Smith, R. E.
Partner: UNT Libraries Government Documents Department
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Stereolithography models. Final report

Description: This report describes the first stereolithographic models made, which proved in a new release of ProEngineer software (Parametric Technologies, or PTC) and 3D Systems (Valencia, California) software for the SLA 250 machine. They are a model of benzene and the {alpha}-carbon backbone of the variable region of an antibody.
Date: March 1, 1995
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Models of the solvent-accessible surface of biopolymers

Description: Many biopolymers such as proteins, DNA, and RNA have been studied because they have important biomedical roles and may be good targets for therapeutic action in treating diseases. This report describes how plastic models of the solvent-accessible surface of biopolymers were made. Computer files containing sets of triangles were calculated, then used on a stereolithography machine to make the models. Small (2 in.) models were made to test whether the computer calculations were done correctly. Alā€¦ more
Date: September 1, 1996
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Russian surety research projects in the Sandia National Laboratories Cooperative Measures Program

Description: Over forty safety and security related research and development projects have been initiated between Sandia National Laboratories and the Russian nuclear weapons laboratories VNIIEF and VNIITF. About half of these projects have been completed. All relate to either safety or security methodology development, processes, accident environment analysis and testing, accident databases, assessments or product design of devices. All projects have a potential benefit to various safety or security prograā€¦ more
Date: July 1, 1996
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Nickel ferricyanide scavenging flowsheet for neutralized concentrated raw

Description: From the startup of the TBP Plant until late in September, 1954, when in-line scavenging operations were begun, the wastes from the TBP Plant had been stored after neutralization and concentration in underground storage tanks. Some of this TBP waste has been given a secondary concentration in the waste concentration facilities (first cycle waste evaporators) at the tank farms. Studies by the chemistry Unit have indicated that a further reduction in the volume of waste permanently stored is possā€¦ more
Date: October 26, 1954
Creator: Smith, R. E. & Coppinger, E. A.
Partner: UNT Libraries Government Documents Department
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Chemical characterization of CTBN (carboxyl-terminated butadiene/acrylonitrile) and its epoxy adduct

Description: This report describes the analysis of carbonxyl-terminated butadiene (CTB), carboxyl-terminated butadiene/acrylonitrile (CTBN), and a CTBN adduct prepared by reaction with Epon 828. Data from gel permeation chromatography, nuclear magnetic resonance spectroscopy, high performance liquid chromatography, and ion chromatography are presented and discussed. Quantitative methods based on carbon-13 and proton NMR for analyzing CTBN are described. Proton NMR was found to be useful in identifying lots ā€¦ more
Date: January 1, 1990
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Safe Conditions For Applying Titanium In H.A.P.O Process Equipment

Description: A two and one-half year period of extreme caution where titanium and nitric acid are involved has passed since the occurrence of the last and most serious uncontrolled incident involving titanium and nitric acid. During this period controlled explosions involving titanium and nitric acid have been routinely reproduced, additional laboratory and pilot plant experience has been gained and successful industrial applications have been appraised. Based on laboratory data and the known industrial expā€¦ more
Date: October 6, 1956
Creator: Smith, R.E.
Partner: UNT Libraries Government Documents Department
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A fuzzy controlled three-phase centrifuge for waste separation

Description: The three-phase centrifuge technology discussed in this paper was developed by Neal Miller, president of Centech, Inc. The three-phase centrifuge is an excellent device for cleaning up oil field and refinery wastes which are typically composed of hydrocarbons, water, and solids. The technology is unique. It turns the waste into salable oil, reusable water, and landfill-able solids. No secondary waste is produced. The problem is that only the inventor can set up and run the equipment well enoughā€¦ more
Date: February 1, 1998
Creator: Parkinson, W.J.; Smith, R.E. & Miller, N.
Partner: UNT Libraries Government Documents Department
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Overview of the joint US/Russia surety program in the Sandia National Laboratories Cooperative Measures Program

Description: Sandia National Laboratories has initiated many joint research and development projects with the two premier Russian nuclear laboratories, VNIIEF and VNIITF, (historically known as Arzamas-16 and Chelyabinsk-70) in a wide spectrum of areas. One of the areas in which critical dialogue and technical exchange is continuing to take place is in the realm of system surety. Activities primarily include either safety or security methodology development, processes, accident environment analyses and testā€¦ more
Date: February 1, 1998
Creator: Smith, R.E.; Vorontsova, O.S. & Blinov, I.M.
Partner: UNT Libraries Government Documents Department
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Russian risk assessment methods and approaches

Description: One of the benefits resulting from the collapse of the Soviet Union is the increased dialogue currently taking place between American and Russian nuclear weapons scientists in various technical arenas. One of these arenas currently being investigated involves collaborative studies which illustrate how risk assessment is perceived and utilized in the Former Soviet Union (FSU). The collaborative studies indicate that, while similarities exist with respect to some methodologies, the assumptions anā€¦ more
Date: July 1, 1996
Creator: Dvorack, M.A.; Carlson, D.D. & Smith, R.E.
Partner: UNT Libraries Government Documents Department
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A fuzzy control system for a three-phase oil field centrifuge

Description: The three-phase centrifuge discussed here is an excellent device for cleaning up oil field and refinery wastes. These wastes are typically composed of hydrocarbons, water, and solids. This technology converts waste, which is often classified as hazardous, into salable oil, reusable water, and solids that can be placed in landfills. No secondary waste is produced. A major problem is that only one person can set up and run the equipment well enough to provide an optimal cleanup. Demand for this tā€¦ more
Date: December 31, 1998
Creator: Parkinson, W.J.; Smith, R.E.; Wantuck, P.J. & Miller, N.
Partner: UNT Libraries Government Documents Department
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NIR high-efficiency subwavelength diffractive structures in semiconductors

Description: We have fabricated sub-wavelength diffractive optical elements with binary phase profiles for operation at 975 nm. Blazed transmission gratings with minimum features 63 nm wide were designed by using rigorous coupled-wave analysis and fabricated by direct-write e-beam lithography and reactive ion beam etching in gallium arsenide. Transmission measurements show 85% diffraction efficiency into the first order. Anti-reflection surfaces, with features 42 nm wide were also designed and fabricated.
Date: March 1, 1995
Creator: Smith, R. E.; Warren, M. E.; Wendt, J. R. & Vawter, G. A.
Partner: UNT Libraries Government Documents Department
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Subwavelength diffractive elements fabricated in semiconductor for 975 nm

Description: This paper presents a high-efficiency, dielectric, subwavelength surface relief ``blazed grating`` and reports recent results on a subwavelength ``anti-reflection`` surface. These structures were designed for use at 975 nm, probably the shortest wavelength for which semiconductor structures of these types have been successfully demonstrated. They were fabricated in GaAs substrates.
Date: January 1, 1996
Creator: Smith, R. E.; Warren, M. E.; Wendt, J. R. & Vawter, G. A.
Partner: UNT Libraries Government Documents Department
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Collaborative development of a US/Russia safety information center database

Description: One of the major outgrowths resulting from the collapse of the former Soviet Union (FSU) has been an increase in technical information exchange and dialogue between the Russian and American nuclear weapons laboratories. One area of such discussions is concerned with the safety of low probability, high consequence systems and operations. In order to further the understanding between the respective institutes in this important area, a collaborative effort has been established between Sandia Natioā€¦ more
Date: January 1, 1998
Creator: Dvorack, M.A.; Smith, R.E.; Ananiychuk, V.N. & Volkova, N.A.
Partner: UNT Libraries Government Documents Department
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An approximate-reasoning-based method for screening high-level waste tanks for flammable gas

Description: The in situ retention of flammable gas produced by radiolysis and thermal decomposition in high-level waste can pose a safety problem if the gases are released episodically into the dome space of a storage tank. Screening efforts at Hanford have been directed at identifying tanks in which this situation could exist. Problems encountered in screening motivated an effort to develop an improved screening methodology. Approximate reasoning (AR) is a formalism designed to emulate the kinds of compleā€¦ more
Date: July 1, 1998
Creator: Eisenhawer, S.W.; Bott, T.F. & Smith, R.E.
Partner: UNT Libraries Government Documents Department
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An approximate-reasoning-based method for screening flammable gas tanks

Description: High-level waste (HLW) produces flammable gases as a result of radiolysis and thermal decomposition of organics. Under certain conditions, these gases can accumulate within the waste for extended periods and then be released quickly into the dome space of the storage tank. As part of the effort to reduce the safety concerns associated with flammable gas in HLW tanks at Hanford, a flammable gas watch list (FGWL) has been established. Inclusion on the FGWL is based on criteria intended to measureā€¦ more
Date: March 1, 1998
Creator: Eisenhawer, S.W.; Bott, T.F. & Smith, R.E.
Partner: UNT Libraries Government Documents Department
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Mode-expanded semiconductor laser with tapered-rib adiabatic-following fiber coupler

Description: Expanded-mode semiconductor lasers are of great interest due to the benefits of reduced far-field divergence and improved coupling efficiency to optical fiber. The authors present a new diode laser using a Tapered-Rib Adiabatic-Following Fiber Coupler (TRAFFiC) to achieve 2D mode expansion without epitaxial regrowth or sharply-defined tips on tapered waveguides. The expanded mode size would allow 0.25 to 1 dB coupling loss to standard telecommunications fiber making smaller-core specialty fiberā€¦ more
Date: December 1, 1996
Creator: Vawter, G. A.; Smith, R. E.; Hou, H. & Wendt, J. R.
Partner: UNT Libraries Government Documents Department
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