A 3-d modular gripper design tool (open access)

A 3-d modular gripper design tool

Modular fixturing kits are precisely machined sets of components used for flexible, short-turnaround construction of fixtures for a variety of manufacturing purposes. A modular vise is a parallel-jaw vise, where each jaw is a modular fixture plate with a regular grid of precisely positioned holes. A modular vise can be used to locate and hold parts for machining, assembly, and inspection tasks. To fixture a part, one places pins in some of the holes so that when the vise is closed, the part is reliably located and completely constrained. The modular vise concept can be adapted easily to the design of modular parallel-jaw grippers for robots. By attaching a grid plate to each jaw of a parallel-jaw gripper, the authors gain the ability to easily construct high-quality grasps for a wide variety of parts from a standard set of hardware. Wallack and Canny developed a previous algorithm for planning planar grasp configurations for the modular vise. In this paper, the authors expand this work to produce a 3-d fixture/gripper design tool. They describe several analyses added to the planar algorithm to improve its utility, including a three-dimensional grasp quality metric based on geometric and force information, three-dimensional geometric loading analysis, …
Date: January 1, 1997
Creator: Brown, R.G. & Brost, R.C.
Object Type: Report
System: The UNT Digital Library
3-D vertical seismic profiling at LLNL Site 300 (open access)

3-D vertical seismic profiling at LLNL Site 300

The initial goal of the 3-D Vertical Seismic Profiling (VSP) work at LLNL was to characterize seismic wave velocities and frequencies below the vadose zone to design the acquisition geometry for a 3-D shallow surface seismic reflection survey. VSPs are also used routinely to provide a link between surface seismic data and well logs. However, a test 2-D seismic line recorded at LLNL in the Spring of 1994 indicated that obtaining high quality reflection images below the vadose zone, yet shallower that 50 m, would require an expensive, very finely sampled survey ({lt} 1 m receiver spacing). Extensive image processing of the LLNL 2-D test line indicated that the only reliable reflection was from the top of the water table. Surprisingly, these results were very different than recent 3-D seismic work recorded at other sites, where high quality, high frequency surface (up to 300 Hz) reflection images were obtained as shallow as 20m. We believe that the differences are primarily due to the comparatively deep vadose zone at LLNL (15 to 30m) as compared to 0-5m at other sites. The thick vadose zone attenuates the reflection signals, particularly at the high frequencies (above 100 @). In addition, the vadose zone …
Date: January 29, 1997
Creator: Bainer, R.; Rector, J. & Milligan, P.
Object Type: Report
System: The UNT Digital Library
5 MeV Mott Polarimeter Development at Jefferson Lab (open access)

5 MeV Mott Polarimeter Development at Jefferson Lab

Low energy (E{sub k}=100 keV) Mott scattering polarimeters are ill- suited to support operations foreseen for the polarized electron injector at Jefferson Lab. One solution is to measure the polarization at 5 MeV where multiple and plural scattering are unimportant and precision beam monitoring is straightforward. The higher injector beam current offsets the lower cross-sections. Recent improvements in the CEBAF injector polarimeter scattering chamber have improved signal to noise.
Date: January 1, 1997
Creator: Price, J. S.; Sinclair, C. K.; Cardman, L. S.; Haanskneccht, J.; Mack, D. J.; Piot, P. et al.
Object Type: Article
System: The UNT Digital Library
8. annual U.S. hydrogen meeting: Proceedings (open access)

8. annual U.S. hydrogen meeting: Proceedings

The proceedings contain 35 papers arranged under the following topical sections: Government`s partnership role for hydrogen technology development; Government/industry partnerships -- Demonstrations; Entering the market -- Partnerships in transportation; Hydrogen -- The aerospace fuel; Codes and Standards; Advanced technologies; and Opportunities for partnerships in the utility market. Of the three markets identified (transportation, power production, and village power) papers are presented dealing with the first two. Three parts of the transportation market were covered: cars, trucks, and buses. Progress was reported in both fuel cell and internal combustion engine vehicle propulsion systems. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.
Date: January 1997
Creator: unknown
Object Type: Article
System: The UNT Digital Library
60-Day waste compatibility safety issues and final results for AY-102 grab samples (open access)

60-Day waste compatibility safety issues and final results for AY-102 grab samples

Four grab samples (2AY-96-15, 2AY-96-16, 2AY-96-17, and 2AY-96-18) were taken from Riser 15D of Tank 241-AY-102 on October 8, 1996, and received by 222-S Laboratory on October 8, 1996. These samples were analyzed in accordance with Compatibility Grab Sampling and Analysis Plan (TSAP) and Data Quality Objectives for Tank Farms Waste Compatibility Program (DQO) in support of the Waste Compatibility Program. No notifications were required based on sample results.
Date: January 31, 1997
Creator: Nuzum, Jennifer L.
Object Type: Report
System: The UNT Digital Library
60 HZ beam motion reduction at NSLS UV storage ring (open access)

60 HZ beam motion reduction at NSLS UV storage ring

A significant reduction in 60 hz beam motion has been achieved in the UV storage ring. From the wide band harmonic beam motion signal, 60 hz signal is extracted by tuned bandpass filter. This signal is processed by the phase and amplitude adjustment circuits and then, it is fed into the harmonic orbit generation circuits. Several harmonics, near the tune, were canceled by employing one circuit for each harmonic. The design and description of this experiment is given in this paper. The results showing reduction in beam motion at 60 hz are also provided.
Date: January 1, 1997
Creator: Singh, O. V.
Object Type: Article
System: The UNT Digital Library
284-E Powerhouse trench engineering study (open access)

284-E Powerhouse trench engineering study

This document provides the basis for future use of the 284-E Powerhouse Trench as a transport conduit for effluents discharged from the 284-E Powerhouse in accordance with the requirements of the State Waste Discharge Permit, ST 4502.
Date: January 20, 1997
Creator: Crane, A. F.
Object Type: Report
System: The UNT Digital Library
300 Area liquid effluent facilities computer software configuration management plan (open access)

300 Area liquid effluent facilities computer software configuration management plan

This is the 300-area liquid effluent facilities computer software configuration management plan.
Date: January 27, 1997
Creator: Schermerhorn, D.S.
Object Type: Report
System: The UNT Digital Library
1996 Design effort for IFMIF HEBT (open access)

1996 Design effort for IFMIF HEBT

The paper details the 1996 design effort for the IFMIF HEBT. Following a brief overview, it lists the primary requirements for the beam at the target, describes the design approach and design tools used, introduces the beamline modules, gives the results achieved with the design at this stage, points out possible improvements and gives the names and computer locations of the TRACE3-D and PARMILA files that sum up the design work. The design does not fully meet specifications in regards to the flatness of the distribution at the target. With further work, including if necessary some backup options, the flatness specifications may be realized. It is not proposed that the specifications, namely flatness to {+-}5% and higher-intensity ridges that are no more than 15% above average, be changed at this time. The design also does not meet the requirement that the modules of all beamlines should operate at the same settings. However, the goal of using identical components and operational procedures has been met and only minor returning is needed to produce very similar beam distributions from all beamlines. Significant further work is required in the following areas: TRACE3-D designs and PARMILA runs must be made for the beams coming …
Date: January 1, 1997
Creator: Blind, B.
Object Type: Report
System: The UNT Digital Library
The $2000 electric powertrain TRP Project. Baseline program final report, June 22, 1994--January 21, 1996 (open access)

The $2000 electric powertrain TRP Project. Baseline program final report, June 22, 1994--January 21, 1996

The program objective was to develop and test technologies which improve the Northrop Grumman electric powertrain and lead to the volume production of an electric powertrain with the power, smoothness, and cost of an internal combustion engine. Accomplishments for this program are summarized in the following six topic areas and selected figures are shown: (1) The 100 hp powertrain was commercialized; (2) The Chrysler EPIC minivan was commercialized; (3) The 230 hp powertrain was commercialized; (4) The Blue Bird electric school and commercial buses were commercialized; (5) Related developments were initiated for DoD and energy systems applications; and (6) Several key powertrain technologies were researched and advanced.
Date: January 1, 1997
Creator: unknown
Object Type: Report
System: The UNT Digital Library
3D simulation studies of tokamak plasmas using MHD and extended-MHD models (open access)

3D simulation studies of tokamak plasmas using MHD and extended-MHD models

The M3D (Multi-level 3D) tokamak simulation project aims at the simulation of tokamak plasmas using a multi-level tokamak code package. Several current applications using MHD and Extended-MHD models are presented; high-{beta} disruption studies in reversed shear plasmas using the MHD level MH3D code, {omega}{sub *i} stabilization and nonlinear island rotation studies using the two-fluid level MH3D-T code, studies of nonlinear saturation of TAE modes using the hybrid particle/MHD level MH3D-K code, and unstructured mesh MH3D{sup ++} code studies. In particular, three internal mode disruption mechanisms are identified from simulation results which agree well with experimental data.
Date: January 1997
Creator: Park, W.; Chang, Z.; Fredrickson, E.; Fu, G. Y.; Pomphrey, N.; Strauss, H. R. et al.
Object Type: Report
System: The UNT Digital Library
Accelerator driven assembly (open access)

Accelerator driven assembly

This report addresses a Los Alamos National Laboratory (LANL) proposal to build a pulsed neutron source for simulating nuclear-weapons effects. A point design for the pulsed neutron facility was initiated early in FY94 after hosting a Defense Nuclear Agency (DNA) panel review and after subsequently visiting several potential clients and users. The technical and facility designs contained herein fulfill the Statement of Work (SOW) agreed upon by LANL and DNA. However, our point designs and parametric studies identify a unique, cost-effective, above-ground capability for neutron nuclear-weapons-effects studies at threat levels. This capability builds on existing capital installations and infrastructure at LANL. We believe that it is appropriate for us, together with the DNA, to return to the user community and ask for their comments and critiques. We also realize that the requirements of last year have changed significantly. Therefore, the present report is a `working document` that may be revised where feasible as we learn more about the most recent Department of Defense (DoD) and Department of Energy (DOE) needs.
Date: January 1997
Creator: Balderas, J.; Cappiello, M.; Cummings, C. E. & Davidson, R.
Object Type: Report
System: The UNT Digital Library
Acceptance for beneficial use document (open access)

Acceptance for beneficial use document

Adding the Standard Hydrogen Monitoring Systems, VTP-PNL- 105K and VTP-PNL-205K to the Acceptance for Beneficial Use document, WHC-SD-WM-ABU-002.
Date: January 16, 1997
Creator: Bunch, J.R.
Object Type: Report
System: The UNT Digital Library
Acceptance test procedure (ATP) for the master equipment list(MEL) database system -- phase I (open access)

Acceptance test procedure (ATP) for the master equipment list(MEL) database system -- phase I

The Waste Remediation System Facilities Configuration Management Integration group has requested development of a system to help resolve many of the difficulties associated with management of master equipment list information. This project has been identified as Master Equipment List (MEL) database system. Further definition is contained in the system requirements specification (SRS).
Date: January 8, 1997
Creator: Thornton, M.W.
Object Type: Report
System: The UNT Digital Library
Acceptance test procedure for project W-112 HVAC testing, adjusting and balancing for 2404 series, 2620 W and 2740 W (open access)

Acceptance test procedure for project W-112 HVAC testing, adjusting and balancing for 2404 series, 2620 W and 2740 W

This document is an executive summary of the testing, adjusting and balancing completed for Project W-112 for the HVAC systems. The actual results are document in the Acceptance Test Report.
Date: January 23, 1997
Creator: Erpenbeck, E.G.
Object Type: Report
System: The UNT Digital Library
Acceptance test report for the HVAC testing, adjusting and balancing completed on project W-112 for all buildings (open access)

Acceptance test report for the HVAC testing, adjusting and balancing completed on project W-112 for all buildings

This document is an executive summary of the testing, adjusting and balancing completed for Project W-112 for the HVAC systems. The actual results are documented.
Date: January 23, 1997
Creator: Erpenbeck, E.G.
Object Type: Report
System: The UNT Digital Library
Acid-base behavior in hydrothermal processing of wastes. 1997 annual progress report (open access)

Acid-base behavior in hydrothermal processing of wastes. 1997 annual progress report

'A major obstacle to the development of hydrothermal technology for treating DOE wastes has been a lack of scientific knowledge of solution chemistry, thermodynamics and transport phenomena. The progress over the last year is highlighted in the following four abstracts from manuscripts which have been submitted to journals. The authors also have made considerable progress on a spectroscopic study of the acid-base equilibria of Cr(VI). They have utilized novel spectroscopic indicators to study acid-base equilibria up to 380 C. Until now, very few systems have been studied at such high temperatures, although this information is vital for hydrothermal processing of wastes. The pH values of aqueous solutions of boric acid and KOH were measured with the optical indicator 2-naphthol at temperatures from 300 to 380 C. The equilibrium constant Kb-l for the reaction B(OH)3 + OH{sup -} = B(OH){sup -4} was determined from the pH measurements and correlated with a modified Born model. The titration curve for the addition of HCl to sodium borate exhibits strong acid-strong base behavior even at 350 C and 24.1 MPa. At these conditions, aqueous solutions of sodium borate buffer the pH at 9.6 t 0.25. submitted to Ind. Eng. Chem. Res. Acetic Acid and …
Date: January 1, 1997
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Acoustic Emission Monitoring of a Wind Turbine Blade During a Fatigue Test (open access)

Acoustic Emission Monitoring of a Wind Turbine Blade During a Fatigue Test

A fatigue test of a wind turbine blade was conducted at the National Renewable Energy Laboratory in the fall of 1994. Acoustic emission monitoring of the test was performed, starting with the second loading level. The acoustic emission data indicated that this load exceeded the strength of the blade. From the first cycle at the new load, an oil can type of deformation occurred in two areas of the upper skin of the blade. One of these was near the blade root and the other was about the middle of the tested portion of the blade. The emission monitoring indicated that no damage was taking place in the area near the root, but in the deforming area near the middle of the blade, damage occurred from the first cycles at the higher load. The test was stopped after approximately one day and the blade was declared destroyed, although no gross damage had occurred. Several weeks later the test was resumed, to be continued until gross damage occurred. The upper skin tore approximately one half hour after the cycling was restarted.
Date: January 1, 1997
Creator: Beattie, A. G.
Object Type: Article
System: The UNT Digital Library
Acoustic probe for solid-gas-liquid suspensions. 1997 annual progress report (open access)

Acoustic probe for solid-gas-liquid suspensions. 1997 annual progress report

'Acoustic probes have shown promise to be quite effective in determining the solid content in solid-liquid suspensions. However, the presence of small amounts of gas in the waste slurries stored in tanks across the DOE complex prevents straightforward application for characterization of these slurries. The proposed research will develop an acoustic probe for monitoring particle size and volume fraction in slurries in the absence and the presence of gas bubbles. Theoretical Analysis Accomplished: Attenuation of sound waves depends on the size distribution of the solids and the volume fraction of solids. These can in principle be calculated from attenuation measured over a range of frequencies. However, small amounts of bubbles distort the measured attenuation. A typical result from theoretical analysis for the attenuation of solid- gas-liquid systems is given in Figure 1. The total attenuation of a sound wave v(o) equals the sum of contributions by a large number of ''bins'' of particle sizes. This notion yields the following equation for the (hitherto) unknown number density of solid particles as a function of particle radius N(a): j k(o,a)N(a)da = v(o), where the kernel k(o,a) is obtained from analysis. If N(a) is given, the above equation is used to calculate the …
Date: January 1, 1997
Creator: Tavlarides, L. L. & Sangani, A. S.
Object Type: Report
System: The UNT Digital Library
Activated carbon testing for the 200 area effluent treatment facility (open access)

Activated carbon testing for the 200 area effluent treatment facility

This report documents pilot and laboratory scale testing of activated carbon for use in the 200 Area Effluent Treatment Facility peroxide decomposer columns. Recommendations are made concerning column operating conditions and hardware design, the optimum type of carbon for use in the plant, and possible further studies.
Date: January 17, 1997
Creator: Wagner, R. N.
Object Type: Report
System: The UNT Digital Library
ADANS database specification (open access)

ADANS database specification

The purpose of the Air Mobility Command (AMC) Deployment Analysis System (ADANS) Database Specification (DS) is to describe the database organization and storage allocation and to provide the detailed data model of the physical design and information necessary for the construction of the parts of the database (e.g., tables, indexes, rules, defaults). The DS includes entity relationship diagrams, table and field definitions, reports on other database objects, and a description of the ADANS data dictionary. ADANS is the automated system used by Headquarters AMC and the Tanker Airlift Control Center (TACC) for airlift planning and scheduling of peacetime and contingency operations as well as for deliberate planning. ADANS also supports planning and scheduling of Air Refueling Events by the TACC and the unit-level tanker schedulers. ADANS receives input in the form of movement requirements and air refueling requests. It provides a suite of tools for planners to manipulate these requirements/requests against mobility assets and to develop, analyze, and distribute schedules. Analysis tools are provided for assessing the products of the scheduling subsystems, and editing capabilities support the refinement of schedules. A reporting capability provides formatted screen, print, and/or file outputs of various standard reports. An interface subsystem handles message traffic …
Date: January 16, 1997
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Adding kinetics and hydrodynamics to the CHEETAH thermochemical code (open access)

Adding kinetics and hydrodynamics to the CHEETAH thermochemical code

In FY96 we released CHEETAH 1.40, which made extensive improvements on the stability and user friendliness of the code. CHEETAH now has over 175 users in government, academia, and industry. Efforts have also been focused on adding new advanced features to CHEETAH 2.0, which is scheduled for release in FY97. We have added a new chemical kinetics capability to CHEETAH. In the past, CHEETAH assumed complete thermodynamic equilibrium and independence of time. The addition of a chemical kinetic framework will allow for modeling of time-dependent phenomena, such as partial combustion and detonation in composite explosives with large reaction zones. We have implemented a Wood-Kirkwood detonation framework in CHEETAH, which allows for the treatment of nonideal detonations and explosive failure. A second major effort in the project this year has been linking CHEETAH to hydrodynamic codes to yield an improved HE product equation of state. We have linked CHEETAH to 1- and 2-D hydrodynamic codes, and have compared the code to experimental data. 15 refs., 13 figs., 1 tab.
Date: January 15, 1997
Creator: Fried, L.E., Howard, W.M., Souers, P.C.
Object Type: Report
System: The UNT Digital Library
Adsorption/membrane filtration as a contaminant concentration and separation process for mixed wastes and tank wastes. Progress report, 1996--1997 (open access)

Adsorption/membrane filtration as a contaminant concentration and separation process for mixed wastes and tank wastes. Progress report, 1996--1997

'The goal of this research is the development of a treatment system for the separation of contaminants in low-organic Hanford tank wastes into sub-groups that can subsequently be processed and appropriately disposed of. Since many of the contaminants of concern are associated with solids, initial experimental work has focused on characterizing the particulate matter in Hanford waste and understanding the filterability of this waste through membranes. Removal of some of the soluble contaminants by adsorption has been studied as well. The experimental work conducted to date can be divided into four categories: speciation calculations; solid/aqueous phase partitioning; membrane filtration experiments; and sorption experiments. The work was conducted using two simulated Hanford wastes (SHWs), one that contained strong complexing agents (citrate and EDTA) and one that did not.'
Date: January 1, 1997
Creator: Benjamin, M.M.
Object Type: Report
System: The UNT Digital Library
The ADVANCE project: Formal evaluation of the targeted deployment. Volume 1 (open access)

The ADVANCE project: Formal evaluation of the targeted deployment. Volume 1

The Advanced Driver and Vehicle Advisory Navigation ConcEpt (ADVANCE) was an invehicle advanced traveler information system (ATIS) that operated in the northwest suburbs of Chicago, Illinois. It was designed to provide origin-destination shortest-time route guidance to a vehicle based on (a) an on-board static (fixed) data base of average network link travel times by time of day, combined as available and appropriate with (b) dynamic (real-time) information on traffic conditions provided by radio frequency (RF) communications to and from a traffic information center (TIC). Originally conceived in 1990 as a major project that would have installed 3,000 to 5,000 route guidance units in privately owned vehicles throughout the test area, ADVANCE was restructured in 1995 as a {open_quotes}targeted deployment,{close_quotes} in which approximately 80 vehicles were to be equipped with the guidance units - Mobile Navigation Assistants (MNAs) - to be in full communication with the TIC while driving the ADVANCE test area road system. Volume one consists of the evaluation managers overview report, and several appendices containing test results.
Date: January 1997
Creator: unknown
Object Type: Report
System: The UNT Digital Library