D0 Silicon Upgrade: Upgrade Piping Loads on Cleanroom Roof (open access)

D0 Silicon Upgrade: Upgrade Piping Loads on Cleanroom Roof

The proposed piping layout for the DO upgrade will run along the south wall of DAB. The cryogenic service pipe runs above the upper and lower cleanroom roofs and will need to be supported by the roofs beams. Calculations were done to determine the stresses in the I-beams created by the existing and additional loads due to the upgrade. Refer to drawing no. 3823.115-ME-317283 for drawings of the piping layout. Figure 1 shows the 'plan view' portion of this drawing. The weight of the individual lines were calculated in figure 2 assuming a pipe density of O.28 lbm/in{sup 3} for stainless steel (0.12% C) and a fluid density (assuming LN2 at 1 atm) of 0.03 lbm/in{sup 3}. The weights of the corrugated steel flooring, assembly hall feed cans, support beams, and roof hatch were also included in the analysis. These loads are calculated on pgs. 5-6. A floor load of 50 lbf/ft{sup 2} was also added in order to maintain the existing floor load limit in addition to the added piping loads. Measurements of the dimensions of the I-beams determined that the nominal sizes of the beams were W8 x 21 for the lower roof and W14 x 26 for …
Date: August 28, 1995
Creator: Sakla, Steve
Object Type: Report
System: The UNT Digital Library
D0 Silicon Upgrade: Scaffolding Plateform at Muon Chamber (open access)

D0 Silicon Upgrade: Scaffolding Plateform at Muon Chamber

The design for the scaffolding platform which will be connected to the muon chamber wall was analyzed for a load rating of 400 lbs. The platform is supported on each end and the calculations were done for the full 400 lbs. on the end of the horizontal beam. Both members were analyzed for maximum stresses and were compared to the allowable stress, and both members were found to be acceptable in accordance with the ASCE and AISC specifications. The only recommendation is for all the 3/8-inch steel bolt to be of grade 5 or better. This is necessary to insure safety.
Date: July 28, 1995
Creator: Kuwazaki, Andrew
Object Type: Report
System: The UNT Digital Library
Power Tests of a String of Magnets Comprising a Full Cell of the Superconducting Super Collider (open access)

Power Tests of a String of Magnets Comprising a Full Cell of the Superconducting Super Collider

In this paper we describe the operation and testing of a string of magnets comprising a full cell of the Superconducting Super Collider (SSC). The full cell configuration composed of ten dipoles, two quadrupoles, and three spool pieces is the longest SSC magnet string ever tested. Although the tests of the full cell were undertaken after the SSC project was marked for termination, their completion was deemed necessary and useful to future efforts at other accelerator laboratories utilizing Superconducting magnets. The focus of this work is on the electrical and cryogenic performance of the string components and the quench protection system with an emphasis on solving some of the questions concerning electrical performance raised during the previous two experimental runs involving a half cell configuration.
Date: June 28, 1995
Creator: Burgett, W.; Cromer, L.; Haenni, D.; Hentges, M.; Jaffrey, T.; Kraushaar, P. et al.
Object Type: Article
System: The UNT Digital Library
Multi-function Waste Tank Facility path forward engineering analysis -- Technical Task 3.6, Estimate of operational risk in 200 West Area (open access)

Multi-function Waste Tank Facility path forward engineering analysis -- Technical Task 3.6, Estimate of operational risk in 200 West Area

Project W-0236A has been proposed to provide additional waste tank storage in the 200 East and 200 West Areas. This project would construct two new waste tanks in the 200 West Area and four new tanks in the 200 East Area, and a related project (Project W-058) would construct a new cross-site line. These projects are intended to ensure sufficient space and flexibility for continued tank farm operations, including tank waste remediation and management of unforeseen contingencies. The objective of this operational risk assessment is to support determination of the adequacy of the free-volume capacity provided by Projects W-036A and W-058 and to determine related impacts. The scope of the assessment is the 200 West Area only and covers the time period from the present to the year 2005. Two different time periods were analyzed because the new cross-site tie line will not be available until 1999. The following are key insights: success of 200 West Area tank farm operations is highly correlated to the success of the cross-site transfer line and the ability of the 200 East Area to receive waste from 200 West; there is a high likelihood of a leak on a complexed single-shell tank in the …
Date: April 28, 1995
Creator: Coles, G.A.
Object Type: Report
System: The UNT Digital Library
A comparison of the shielding performances of the AT-400A, Model FL and Model AL-R8 containers (open access)

A comparison of the shielding performances of the AT-400A, Model FL and Model AL-R8 containers

A comparison of the neutron and photon dose rates at different locations on the outside surface of the Model AL-RB, Model FL and the AT-400A containers for a given pit load has been done in order to understand the shielding characteristics of these containers. The Model AL-R8 is not certified for transport and is only used for storage of pits, while the Model FL is a certified Type B pit transportation container. The AT-400A is being developed as a type B pit storage and transportation container. The W48, W56 and B83 pits were chosen for this study because of their encompassing features with regard to other pits presently being stored. A detailed description of the geometry and materials of these containers and of the neutron and photon emission spectra from the actinide materials present in the pit have been used in the calculations of the total dose rates. The calculations have been done using the three-dimensional, neutron-photon Monte Carlo code MCNP. The results indicate the need for a containment vessel (CV), as is found in the Model FL and AT-400A containers, in order to assure compliance with 10 CFR 71 regulations. The absence of a CV in the AL-R8 container …
Date: April 28, 1995
Creator: Hansen, L. F.
Object Type: Article
System: The UNT Digital Library
Petroleum supply monthly, June 1995 with data for April 1995 (open access)

Petroleum supply monthly, June 1995 with data for April 1995

The Petroleum Supply Monthly (PSM) is one of a family of four publications produced by the Petroleum Supply Division within the Energy Information Administration (EIA) reflecting different levels of data timeliness and completeness. The other publications are the Weekly Petroleum Status Report (WPSR), the Winter Fuels Report, and the Petroleum Supply Annual (PSA). Data presented in the PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in primary supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data presented in the PSM are divided into two sections: Summary Statistics and Detailed Statistics.
Date: June 28, 1995
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Evaluation of Beryllium Exposure Assessment and Control Programs at AWE, Cardiff Facility, Rocky Flats Plant, Oak Ridge Y-12 Plant and Lawrence Livermore National Laboratory (open access)

Evaluation of Beryllium Exposure Assessment and Control Programs at AWE, Cardiff Facility, Rocky Flats Plant, Oak Ridge Y-12 Plant and Lawrence Livermore National Laboratory

Site visits were made to DOE beryllium handling facilities at the Rocky Flats Plant; Oak Ridge Y-12 Plant, LLNL; as well as to the AWE Cardiff Facility. Available historical data from each facility describing its beryllium control program were obtained and summarized in this report. The AWE Cardiff Facility computerized Be personal and area air-sampling database was obtained and a preliminary evaluation was conducted. Further validation and documentation of this database will be very useful in estimating worker Be. exposure as well as in identifying the source potential for a variety of Be fabrication activities. Although all of the Be control programs recognized the toxicity of Be and its compounds, their established control procedures differed significantly. The Cardiff Facility, which was designed for only Be work, implemented a very strict Be control program that has essentially remained unchanged, even to today. LLNL and the Oak Ridge Y-12 Plant also implemented a strict Be control program, but personal sampling was not used until the mid 1980s to evaluate worker exposure. The Rocky Flats plant implemented significantly less controls on beryllium processing than the three previous facilities. In addition, records were less available, management and industrial hygiene staff turned over regularly, and …
Date: April 28, 1995
Creator: Johnson, J. S.; Foote, K. L.; Slawski, J. W. & Cogbill, G.
Object Type: Report
System: The UNT Digital Library
Can solid-state laser technology serve usefully beyond fusion ignition facilities? (open access)

Can solid-state laser technology serve usefully beyond fusion ignition facilities?

We have explored the major technical and conceptual issues relating to the suitability of a diode-pumped solid state laser as a driver for an inertial fusion energy power plant. While solid state lasers have long served as the workhorse of inertial confinement fusion physics studies, the deployment of a driver possessing adequate efficiency, reliability, and repetition rate for inertial fusion energy requires the implementation of several technical innovations discussed in this article.
Date: July 28, 1995
Creator: Payne, S. A.; Powell, H. T. & Krupke, W. F.
Object Type: Article
System: The UNT Digital Library
A coupled atmosphere-river flow simulation in California during the 1994-1995 winter (open access)

A coupled atmosphere-river flow simulation in California during the 1994-1995 winter

Calculation of river flow is important for managing reservoirs and flood forecasting. In the western United States, a complex terrain which is characterized by steep slopes and narrow valleys often cause a substantial rise of river levels in a short period during heavy precipitation events. Since flood control is one of the major tasks of reservoir operation, inaccurate predictions of precipitation and river flow may cause flooding or waste of water resources. Accurate calculations of river flow need accurate liquid water input to the river system at scales of individual watersheds. Precipitation and snowmelt are the most important natural source of water for a river. Reservoir operations significantly affect river flow in the western United States. Factors such as instantaneous soil water content, vegetation cover, terrain slope and ground water table structure are also crucial for river flow calculation. There are two types of precipitation: rain and snowfall. River flow quickly responds to rainfall while snowfall does not directly affect river flow until it melts afterwards. Therefore, these two types of precipitation must be separately provided to the river flow model for correct calculation of river flows. A large portion of snowfall is accumulated at high terrain during winter months …
Date: September 28, 1995
Creator: Kim, J. & Miller, N. L.
Object Type: Article
System: The UNT Digital Library
Increasing heavy oil reserves in the Wilmington oil field through advanced reservoir characterization and thermal production technologies. Quarterly technical progress report, March 30, 1995--June 30, 1995 (open access)

Increasing heavy oil reserves in the Wilmington oil field through advanced reservoir characterization and thermal production technologies. Quarterly technical progress report, March 30, 1995--June 30, 1995

This is the first quarterly technical progress report for the project. Although the contract was awarded on March 30, 1995 and Pre-Award Approval was given on January 26, 1995, the partners of this project initiated work on October 1, 1994. As such, this progress report summarizes the work performed from project inception. The production and injection data, reservoir engineering data, and digitized and normalized log data were all completed sufficiently by the end of the quarter to start work on the basic reservoir engineering and geologic stochastic models. Basic reservoir engineering analysis began June 1 and will continue to March, 1996. Design work for the 5 observation/core holes, oil finger printing of the cored oil sands, and tracers surveys began in January, 1995. The wells will be drilled from July--August, 1995 and tracer injection work is projected to start in October, 1995. A preliminary deterministic 3-D geologic model was completed in June which is sufficient to start work on the stochastic 3-D geologic model. The four proposed horizontal wells (two injectors and two producers) have been designed, equipment has been ordered, and the wells will be drilled from mid-August through September. Four existing steam injection wells were converted to hot …
Date: July 28, 1995
Creator: Clarke, D.; Ershaghi, I.; Davies, D.; Phillips, C. & Mondragon, J.
Object Type: Report
System: The UNT Digital Library
A theoretical comparison of evolutionary algorithms and simulated annealing (open access)

A theoretical comparison of evolutionary algorithms and simulated annealing

This paper theoretically compares the performance of simulated annealing and evolutionary algorithms. Our main result is that under mild conditions a wide variety of evolutionary algorithms can be shown to have greater performance than simulated annealing after a sufficiently large number of function evaluations. This class of EAs includes variants of evolutionary strategie and evolutionary programming, the canonical genetic algorithm, as well as a variety of genetic algorithms that have been applied to combinatorial optimization problems. The proof of this result is based on a performance analysis of a very general class of stochastic optimization algorithms, which has implications for the performance of a variety of other optimization algorithm.
Date: August 28, 1995
Creator: Hart, W.E.
Object Type: Article
System: The UNT Digital Library
AXAIR and PUFF-PLUME Comparison (open access)

AXAIR and PUFF-PLUME Comparison

A test version of AXAIR has been prepared to compare with PUFF-PLUME. The test version of AXAIR applies the same meteorological conditions as PUFF-PLUME and also the dispersion coefficients have been changed to be the same as those in PUFF-PLUME. The test version of AXAIR and PUFF-PLUME produce virtually the same doses with the differences being less than 3% for the select cases with similar input. Differences and similarities in the models are also addressed.
Date: September 28, 1995
Creator: Simpkins, A.A. & Kurzeja, R.J.
Object Type: Report
System: The UNT Digital Library
Assistance to the states with risk based data management. Quarterly technical progress report, April 1--June 30, 1995 (open access)

Assistance to the states with risk based data management. Quarterly technical progress report, April 1--June 30, 1995

The Tasks of this project are to: (1) complete implementation of a Risk Based Data Management System (RBDMS) in the States of Alaska, Mississippi, Montana, Nebraska; and (2) conduct Area of Review (AOR) Workshops in the states of California, Oklahoma, Kansas, and Texas. The RBDMS was designed to be a comprehensive database with the ability to expand into multiple areas, including oil and gas production. The database includes comprehensive well information for both producing and injection wells. It includes automated features for performing functions redated to AOR analyses, environmental risk analyses, well evaluation, permit evaluation, compliance monitoring, operator bonding assessments, operational monitoring and tracking, and more. This quarterly report describes the status of the development of the RBDMS project in both stated tasks and proposes further steps in its implementation.
Date: July 28, 1995
Creator: Paque, M. J.
Object Type: Report
System: The UNT Digital Library
Robotics and Automation Activities at the Savannah River Site: A Site Report for SUBWOG 39F (open access)

Robotics and Automation Activities at the Savannah River Site: A Site Report for SUBWOG 39F

The Savannah River Site has successfully used robots, teleoperators, and remote video to reduce exposure to ionizing radiation, improve worker safety, and improve the quality of operations. Previous reports have described the use of mobile teleoperators in coping with a high level liquid waste spill, the removal of highly contaminated equipment, and the inspection of nuclear reactor vessels. This report will cover recent applications at the Savannah River, as well as systems which SRS has delivered to other DOE site customers.
Date: September 28, 1995
Creator: Teese, G.D.
Object Type: Report
System: The UNT Digital Library
Waste characterization activities at the Lawrence Livermore National Laboratory (open access)

Waste characterization activities at the Lawrence Livermore National Laboratory

Radioactive and hazardous wastes are generated at many national laboratories, military sites, fuel fabrication and enrichment plants, reactors, and many other facilities. At all of these sites, wastes must be separated, categorized, possibly treated, and packed into containers for shipment to waste-storage or disposal sites. Prior to treatment, storage or, shipment, the containers must be characterized to determine the ultimate disposition of the contained waste. Comprehensive and accurate nondestructive evaluation (NDE) and nondestructive assay (NDA) methods can be used to characterize most waste containers in a safe and cost-effective manner without opening them. The Lawrence Livermore National Laboratory (LLNL) is investigating and developing the application of x-ray and {gamma}-ray methods to nonintrusively characterize waste containers and/or items. X-ray NDE methods are being investigated to determine whether they can be used to identify hazardous and nonconforming materials. A {gamma}-ray NDA method is used to identify the radioactive sources within a container and to accurately quantify their strength. In this paper we describe five waste characterization projects being conducted at LLNL that apply both the NDE and NDA methods and present results.
Date: June 28, 1995
Creator: Roberson, G. P.; Martz, H. E. & Haskins, J. J.
Object Type: Article
System: The UNT Digital Library
Technology development for cobalt F-T catalysts. Quarterly technical progress report number 10, January 1--March 31, 1995 (open access)

Technology development for cobalt F-T catalysts. Quarterly technical progress report number 10, January 1--March 31, 1995

The goal of this project is the development of a commercially-viable, cobalt-based Fischer-Tropsch (F-T) catalyst for use in a slurry bubble column reactor. The major objectives of this work are (1) to develop a cobalt-based F-T catalyst with low (< 5%) methane selectivity, (2) to develop a cobalt-based F-T catalyst with water-gas shift activity, and (3) to combine both these improvements into one catalyst. The project consists of five major tasks: catalyst development; catalyst testing; catalyst reproducibility tests; catalyst aging tests; and preliminary design and cost estimate for a demonstrate scale catalyst production facility. Technical accomplishments during this reporting period include the following. It appears that the higher activity obtained for the catalysts prepared using an organic solution and reduced directly without prior calcination was the result of higher dispersions obtained under such pretreatment. A Ru-promoted Co catalyst on alumina with 30% Co loading exhibited a 4-fold increase in dispersion and a 2-fold increase in activity in the fixed-bed reactor from that obtained with the non-promoted catalyst. Several reactor runs have again focused on pushing conversion to higher levels. The maximum conversion obtained has been 49.7% with 26g catalyst. Further investigations of the effect of reaction temperature on the performance …
Date: June 28, 1995
Creator: Singleton, Alan H.
Object Type: Report
System: The UNT Digital Library
Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Technical progress report, April 1--June 30, 1995 (open access)

Geological and petrophysical characterization of the Ferron Sandstone for 3-D simulation of a fluvial-deltaic reservoir. Technical progress report, April 1--June 30, 1995

The objective of this project is to develop a comprehensive, interdisciplinary, and quantitative characterization of a fluvial-deltaic reservoir which will allow realistic inter-well and reservoir-scale modeling to be constructed for improved oil-field development in similar reservoirs world-wide. The geological and petrophysical properties of the Cretaceous Ferron Sandstone in east-central Utah will be quantitatively determined. Both new and existing data will be integrated into a three-dimensional representation of spatial variations in porosity, storativity, and tensorial rock permeability at a scale appropriate for inter-well to regional-scale reservoir simulation. Results could improve reservoir management through proper infill and extension drilling strategies, reduction of economic risks, increased recovery from existing oil fields, and more reliable reserve calculations. Technical progress this quarter is divided into regional stratigraphy, case studies, stochastic modeling and fluid-flow simulation, and technology transfer activities. The regional stratigraphy of the Ferron Sandstone outcrop belt from Last Chance Creek to Ferron Creek is being described and interpreted. Photomosaics and a database of existing surface and subsurface data are being used to determine the extent and depositional environment of each parasequence, and the nature of the contacts with adjacent rocks or flow units. For the second field season, detailed geological and petrophysical characterization of …
Date: July 28, 1995
Creator: Allison, M. L.
Object Type: Report
System: The UNT Digital Library
Test plan for K Basin Sludge Canister and Floor Sampling Device (open access)

Test plan for K Basin Sludge Canister and Floor Sampling Device

This document provides the test plan and procedure forms for conducting the functional and operational acceptance testing of the K Basin Sludge Canister and Floor Sampling Device(s). These samplers samples sludge off the floor of the 100K Basins and out of 100K fuel storage canisters.
Date: March 28, 1995
Creator: Meling, T. A.
Object Type: Report
System: The UNT Digital Library
Tank waste remediation system integrated technology plan. Revision 2 (open access)

Tank waste remediation system integrated technology plan. Revision 2

The Hanford Site, located in southeastern Washington State, is operated by the US Department of Energy (DOE) and its contractors. Starting in 1943, Hanford supported fabrication of reactor fuel elements, operation of production reactors, processing of irradiated fuel to separate and extract plutonium and uranium, and preparation of plutonium metal. Processes used to recover plutonium and uranium from irradiated fuel and to recover radionuclides from tank waste, plus miscellaneous sources resulted in the legacy of approximately 227,000 m{sup 3} (60 million gallons) of high-level radioactive waste, currently in storage. This waste is currently stored in 177 large underground storage tanks, 28 of which have two steel walls and are called double-shell tanks (DSTs) an 149 of which are called single-shell tanks (SSTs). Much of the high-heat-emitting nuclides (strontium-90 and cesium-137) has been extracted from the tank waste, converted to solid, and placed in capsules, most of which are stored onsite in water-filled basins. DOE established the Tank Waste Remediation System (TWRS) program in 1991. The TWRS program mission is to store, treat, immobilize and dispose, or prepare for disposal, the Hanford tank waste in an environmentally sound, safe, and cost-effective manner. Technology will need to be developed or improved to …
Date: February 28, 1995
Creator: Eaton, B.; Ignatov, A.; Johnson, S.; Mann, M.; Morasch, L.; Ortiz, S. et al.
Object Type: Report
System: The UNT Digital Library
Suppression of Apoptosis by Basement Membrane Requires three-dimensional Tissue Organization and Withdrawal from the Cell Cycle (open access)

Suppression of Apoptosis by Basement Membrane Requires three-dimensional Tissue Organization and Withdrawal from the Cell Cycle

The basement membrane (BM) extracellular matrix induces differentiation and suppresses apoptosis in mammary epithelial cells, whereas cells lacking BM lose their differentiated phenotype and undergo apoptosis. Addition of purified BM components, which are known to induce {beta}-casein expression, did not prevent apoptosis, indicating that a more complex BM was necessary. A comparison of culture conditions where apoptosis would or would not occur allowed us to relate inhibition of apoptosis to a complete withdrawal from the cell cycle, which was observed only when cells acquired a three-dimensional alveolar structure in response to BM. In the absence of this morphology, both the G1 cyclin kinase inhibitor p21/WAF-I and positive proliferative signals including c-myc and cyclin Dl were expressed and the retinoblastoma protein (Rb) continued to be hyperphosphorylated. When we overexpressed either c-myc in quiescent cells or p21 when cells were still cycling, apoptosis was induced. In the absence of three-dimensional alveolar structures, mammary epithelial cells secrete a number of factors including transforming growth factor a and tenascin, which when added exogenously to quiescent cells induced expression of c-myc and interleukin-{beta}1-converting enzyme (ICE) mRNA and led to apoptosis. These experiments demonstrate that a correct tissue architecture is crucial for long-range homeostasis, suppression of …
Date: December 28, 1995
Creator: Boudreau, N.; Werb, Z. & Bissell, M.J.
Object Type: Article
System: The UNT Digital Library
RHIC Dipole End Volume Weld Evaluation (open access)

RHIC Dipole End Volume Weld Evaluation

None
Date: March 28, 1995
Creator: S., Kane; Farland, A. & Anerella, M.
Object Type: Report
System: The UNT Digital Library
Advanced combustor design concepts to control NO{sub x} and air toxics. Quarterly report (open access)

Advanced combustor design concepts to control NO{sub x} and air toxics. Quarterly report

The University of Utah, Massachusetts Institute of Technology (MIT), Reaction Engineering International (REI) and ABB/Combustion Engineering have joined together in this research proposal to develop fundamental understanding regarding the impact of fuel and combustion changes on ignition stability and flame characteristics because these critically affect: NO{sub x} emissions, carbon burnout, and emissions of air toxics; existing laboratory and bench scale facilities are being used to generate critical missing data which will be used to improve the NO{sub x} and carbon burnout submodels in comprehensive combustion simulation tools currently being used by industrial boiler manufacturers. To ensure effective and timely transfer of This technology, a major manufacturer (ABB) and a combustion model supplier (REI) have been included as part of the team from the early conception of the proposal. ABB/Combustion Engineering is providing needed fundamental data on the extent of volatile evolution from commercial coals as well as background information on current design needs in industrial practice. MIT is responsible for the development of an improved char nitrogen oxidation model which will ultimately be incorporated into an enhanced NO{sup x} submodel. Reaction Engineering International is providing the lead engineering staff for the experimental studies and an overall industrial focus for the …
Date: April 28, 1995
Creator: Pershing, D.W.; Lighty, J.; Veranth, J.; Sarofim, A. & Goel, S.
Object Type: Report
System: The UNT Digital Library
Research program on fractured petroleum reservoirs. Quarterly report, January 1, 1995--March 31, 1995 (open access)

Research program on fractured petroleum reservoirs. Quarterly report, January 1, 1995--March 31, 1995

In a number of experiments, the efficiency of solution-gas drive for both a light and a heavy oil was studied. These experiments reveal that solution-gas drive for a heavy oil of 11 API gravity is more efficient than a light oil of 35 API gravity.
Date: April 28, 1995
Creator: Firoozabadi, A. & Aronson, A.
Object Type: Report
System: The UNT Digital Library
High-speed, high-resolution observations of shaped-charge jets undergoing particulation (open access)

High-speed, high-resolution observations of shaped-charge jets undergoing particulation

Image-converter (IC) camera photography has provided spectacular images and quantitative records of liner collapse and early jet formation in shaped charges. We have extended the application of the IC camera to observations of shaped charge jet surfaces undergoing particulation. Sequential, high-resolution photographs were taken following the same 10-cm portion of jet at 2.5-{mu}s intervals. Simultaneous color rotating-mirror framing camera photographs and 450-keV flash x-ray radiographs were also taken of the same region. This combination provides a detailed record of the evolution of surface structure during jet necking and particulation. In the high-resolution photographs, individual features on the jet surfaces as small as {approximately}100 {mu}m can easily be detected and followed as they evolve over time. The jet surface structure is rough with overlapping slip dislocation lines running along the surface at 45{degree} to either side of the jet axis. This is similar to the texture that develops in long rods undergoing static tension. We discuss the implications of these images for increasing jet particulation times.
Date: February 28, 1995
Creator: Winer, K.; Breithaupt, D.; Shaw, L.; Muelder, S. & Baum, D.
Object Type: Article
System: The UNT Digital Library