| Numerical Simulation of Adiabatic Shear Bands in Ti-6Al-4V Alloy Due to Fragment Impact |
DEC 2004 |
3 pages |
| Authors:
Muege Fermen-Coker; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
 | Current distributions of continuum mechanics codes used by the Army do not have the capability to model failure associated with plastic shear localizations in ballistic applications, such as plugging failure of targets due to ballistic impact by blunt-nosed projectiles. This paper discusses the development and validation of a computational capability to accurately model highly localized deformations in complex projectile-target interactions germane to survivability and lethality technologies for the Army's Future ... |
|
| Eielson Air Force Base Infiltration Pond Study |
MAR 96 |
45 pages |
| Authors:
Paul J. Fronapfel; ARMSTRONG LAB BROOKS AFB TX OCCUPATIONAL AND ENVIRONMENTAL HEALTH DIRECTORATE
|
| The USAF Armstrong Laboratory, Occupational and Environmental Health Directorate, Bioenvironmental Engineering Division, Water Quality Branch (AL/ OEEW) was requested by 354 CES/CEV, Eielson AFB (EAFB), AK, to conduct a survey of the infiltration basin at the base's wastewater treatment plant (WWTP). The effluent water from the WWTP discharges to the infiltration pond at an average rate of approximately one million gallons per day (I MGD). The infiltration basin is a ... |
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| An Epidemiologic Investigation of Health Effects in Air Force Personnel Following Exposure to Herbicides. Volume 4. |
02 MAY 1995 |
427 pages |
| Authors:
William D. Grubbe; William H. Wolfe; Joe E. Michalek; David E. Williams; Michael B. Lustik; SCIENCE APPLICATIONS INTERNATIONAL CORP MCLEAN VA
|
| Chloracne, a chronic acneiform eruption with a highly specific cutaneous distribution, was first described by Von Bettman in 1897 as an occupational disease in German industrial workers. It was not until 1957 that it became recognized as a very specific consequence of exposure to chlorophenols (1,2). A recent review article summarizes the unique clinical manifestations of this skin condition (3). Early animal researchers employed the rabbit's ear as a model ... |
|
| Response of the B-1B Air Data Sensor to Simulated Dust Cloud Environments |
01 NOV 94 |
106 pages |
| Authors:
Robert G. Oeding; PDA ENGINEERING COSTA MESA CA
|
| This report describes an experimental evaluation of the effects of dusty flow environments on the performance of the B-1B air data sensor (ADS). The evaluations were conducted in the DNA dust erosion facility which is located at PDA Engineering laboratories in Santa Ana, CA. The dust erosion facility was modified to provide a high speed dust jet with controlled moisture addition. Full-scale ADS probes were submerged in the dust flow ... |
|
| Controlled Tests of Educators and Submersible Pumps |
SEP 94 |
135 pages |
| Authors:
James E. Clausner; Peter J. Neilans; Timothy L. Welp; Darryl D. Bishop; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| An eductor developed under the Dredging Research Program, a commercial eductor with similar hydraulics, and two commercial submersible pumps were tested in clean sand and a variety of debris types to measure performance. A total of 61 tests were run. The two eductors had similar performance in clean sand. In rock and garbage bag/swim fin debris, the DRP eductor had higher production. In wood debris, the commercial eductor performed better. ... |
|
| Controlled Tests of Eductors and Submersible Pumps |
SEP 94 |
133 pages |
| Authors:
James E. Clausner; Peter J. Neilans; Timothy L. Welp; Darryl D. Bishop; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| An eductor developed under the Dredging Research Program a commercial eductor with similar hydraulics, and two commercial submersible pumps were tested in clean sand and a variety of debris types to measure performance. A total of 61 tests were run. The two eductors had similar performance in clean sand. In rock and garbage bag/swim fin debris, the DRP eductor had higher production. In wood debris, the commercial eductor performed better. ... |
|
| Evaluation of 8090 and Weldalite-049 Aluminum-Lithium Alloys |
SEP 92 |
38 pages |
| Authors:
Thomas M. Holmes; Ernest S. Chin; Paul J. Huang; Robert E. Pasternak; ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB
|
| Aluminum-lithium (Al-Li) alloys with their high strength, high stiffness, and low density continue to be of great interest to the aerospace industry. The microstructure, properties and fracture of 8090-T8771 and WeldaliteTM 049-T8 Al-Li alloys were studied at MTL in participation with a cooperative round robin sponsored by the Air Force Advanced Aluminum Alloy Test Program. Both 8090 and Weldalite Al-Li alloys demonstrate superior strength to weight ratios compared to the ... |
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| Investigation of Self-Help Oil-Spill Response Techniques and Equipment |
MAY 92 |
381 pages |
| Authors:
W. I. Enderlin; J. P. Downing; C. W. Enderlin; W. S. Pope; T. F. Sanquist; BATTELLE MEMORIAL INST RICHLAND WA PACIFIC NORTHWEST LABS
|
| This document describes a study conducted of 45 self-help response techniques and equipment for oceangoing tankers and inland tank barges to assess their potential effectiveness. The results will be considered by the Coast Guard to determine whether response requirements can be better met with shore-based equipment or vessel carried equipment. This study considers only vessel carried self-help equipment and techniques. The approach to this study included: (1) assessing time-dependent oil ... |
|
| The NIST Working Form for STEP. National PDES Testbed Report Series |
DEC 90 |
10 pages |
| Authors:
Stephen N. Clark; NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD
|
| The Product Data Exchange Specification (PDES) is an emerging standard for the exchange of product information among various manufacturing applications. The neutral exchange medium for PDES product models is the STEP physical file format. The National PDES Testbed at NIST has developed software to manipulate and translate STEP models. This software consists of an in-memory working form and an associated physical file parser, STEPparse. The design and capabilities of STEPparse ... |
|
| Field Demonstration of Aviation Turbine Fuel MIL-T-83133C, Grade JP-8 (NATO Code F-34) at Fort Bliss, TX |
DEC 90 |
124 pages |
| Authors:
Walter E. Butler Jr.; Ruben A. Alvarez; Douglas M. Yost; Steven R. Westbrook; Janet P. Buckingham; SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS RESEARCH FACILITY
|
| A JP-8 fuel demonstration was initiated at Ft. Bliss, TX, to demonstrate the impact of using aviation turbine fuel MIL-T-83133C, grade JP-8 in all military diesel fuel-consuming ground vehicles and equipment. Three major organizations, one ordnance battalion and two activities with a total of 2807 vehicles/equipment (V/E), were identified as participants in the demonstration program, which is authorized to continue through 30 September 1991. No fuel storage tank or V/E ... |
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| Method to Select Chemicals for In Situ Biodegradation of Fuel Hydrocarbons |
JUL 90 |
167 pages |
| Authors:
P. K. Aggarwal; J. L. Means; R. E. Hinchee; G. L. Headington; A. R. Gavaskar; BATTELLE COLUMBUS DIV OH
|
| The purpose of this report was to improve the effectiveness of enhanced biodegradation methods to decontaminate soils and ground waters polluted by JP-4 jet fuel spills. Laboratory studies were conducted to improve nutrient formulations, reduce in situ precipitation and test potential stabilizers for hydrogen peroxide. This laboratory study has investigated the geochemical reactions which cause aquifer plugging and tested several phosphate compounds with improved solubility characteristics. Trimetaphosphate was shown to ... |
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| Computational Model for Armor Penetration |
OCT 1987 |
147 pages |
| Authors:
D. C. Erlich; L. Seaman; D. A. Shockey; SRI INTERNATIONAL MENLO PARK CA
|
| Results are reported from the first year of a three-year joint BRL(AMMRC/SRI program to develop a computational capability to predict the behind-the-armor fragment environment for spaced armor attacked by long rod penetrators. The materials chosen for study were depleted uranium- and tungsten- alloy penetrators, rolled homogeneous armor, and an electroslag-remelt-treated steel armor. Phenomenology experiments indicated that adiabatic shear banding is the dominant microstructural failure mode underlying target plugging and fragmentation ... |
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| Computational Model for Armor Penetration |
OCT 87 |
|
| Authors:
D. C. Erlich; L. Seaman; T. Cooper; R. D. Caligiuri; D. R. Curran; SRI INTERNATIONAL MENLO PARK CA
|
 | This is the first volume of a two-volume series comprising the third annual report for the program Computational Model for Armor Penetration. The objective of the program was to develop a phenomenologically sound material disintegration model for computationally simulating armor penetration by projectile impact. The model would provide the capability to predict the ballistic limit and downrange fragment size and velocity distributions and would eventually be used by the DoD ... |
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| Properties of Laboratory-Tested Specimens of Concrete from Small-Scale Seal Performance Tests at the Waste Isolation Pilot Plant |
SEP 87 |
|
| Authors:
Gregory D. Comes; Lillian D. Wakeley; Edward F. O'Neil III; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| Development and field placement of a salt-saturated concrete at the Waste Isolation Pilot Plant (WIPP) included extensive testing of field-cast specimens in laboratory. Such test specimens were cast during two field events, each part of the Small-Scale Seal Performance Tests (SSSPT) at the WIPP, designated Test Series A and B. This report presents data from laboratory tests of SSSPT specimens at ages of three days to one year. The concrete ... |
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| Use of X-Ray Radiographic Techniques in the Evaluation of Soil Liners |
SEP 85 |
|
| Authors:
Philip G. Malone; James H. May; Kirk W. Brown; James C. Thomas; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| In this preliminary study to determine the usefulness of soil X-ray radiographic techniques and radio-opaque permeants in testing compacted clay liners used for waste containment two methods were examined: one method involved intermittent examination of a test cell during permeation; a second method involved preparing X-radiographs of whole or sliced specimens of simulated liners after they had been subjected to permeater testing. X-radiographs taken during permeation of a bentonite/sand liner ... |
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| Modeling Adiabatic Shear |
JUL 85 |
|
| Authors:
B. E. Ringers; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This paper discusses the techniques and criteria developed to simulate target plugging due to adiabatic shear and presents simulations of two impacts involving steel rods against titanium alloy targets. A Lagrangian dynamic impact code, EPIC-2, was used as the basis for this effort. A stress/ (strain, strain rate, temperature) relationship in which temperature was based on the conversion of plastic work into heat, was used for the target material; newly ... |
|
| Liquid Chromatographic Analysis of Nitrocellulose-Base Propellants |
23 APR 1985 |
85 pages |
| Authors:
James G. Carver; ARMY MISSILE COMMAND REDSTONE ARSENAL AL PROPULSION DIRECTORATE
|
| A procedure has been developed that is able to predict the optimum conditions for separation of the ingredients of a complex mixture by liquid chromatography. The procedure involves establishing a data base of retention times for a large number of propellant ingredients in 7 predetermined combinations of 3 solvents. When a new combination of some of these ingredients is encountered, a computer analysis of the retention times of the ingredients ... |
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| Microemulsion-Type Fire-Resistant Diesel Fuel |
31 DEC 84 |
|
| Authors:
W. D. Weatherford Jr.; G. E. Fodor; B. R. Wright; M. D. Kanakia; E. C. Owens; SOUTHWEST RESEARCH INST SAN ANTONIO TX ARMY FUELS AND LUBRICANTS RESEARCH LAB
|
| An approach to developing a fire-resistant diesel fuel (FRF) has been identified as being potentially feasible for protecting diesel-powered armored combat vehicles. This approach involves the addition of 10 vol% water and 12 vol% emulsifier premix (equal parts surfactant and aromatic concentrate) to diesel fuel to form a stable water-in-fuel microemulsion. Water, containing less than 50 ppm of dissolved solids, is required if stable formulations are to be made with ... |
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| Hazardous Chemical Discharge Prevention and Reduction |
MAY 1984 |
|
| Authors:
R. T. Walker; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
|
| This is the final report on the Coast Guard's Hazardous Chemical Discharge Prevention and Reduction Project. The objective of this project was to investigate and develop improved techniques and hardware to prevent the discharge of hazardous chemicals from an endangered marine vessel, and to stop or reduce the discharge from a marine transport container which is already leaking. The end products of this research and development project are passed on ... |
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| New Sliding Surface Techniques Enable the Simulation of Target Plugging Failure |
DEC 1983 |
41 pages |
| Authors:
B. E. Ringers; ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Techniques were developed and incorporated into EPIC-2, a Lagrangian finite element impact code, to accomplish the dynamic relocation of sliding surfaces. This development was necessary in order to model ballistic impact situations involving deep penetration and/or perforation of targets. These techniques were first applied to the modeling of axisymmetric ballistic impact situations involving kinetic energy penetrators versus targets which failed by plugging due to high strains. The development of the ... |
|
| 1981 CRC (Coordinating Research Council) Diesel Fuel Low-Temperature Operability Field Test |
SEP 1983 |
|
| Authors:
COORDINATING RESEARCH COUNCIL INC ATLANTA GA
|
| A cooperative experimental program including seven diesel-powered vehicles and eight specially prepared fuels was run at low ambient temperatures to define the low-temperature operability limit for each vehicle-fuel combination. The vehicle fleet consisted of four passenger cars and three heavy- duty trucks. The fuel set included three base fuels of differing cloud points and five additive-treated versions of these base fuels. The vehicle program was run in Kapuskasing, Ontario, Canada, ... |
|
| Interaction of High-Velocity Aluminum Shaped-Charge Jets with Finite Steel and Concrete Targets, |
MAY 1983 |
5 pages |
| Authors:
David K. Davison; PHYSICS INTERNATIONAL CO SAN LEANDRO CA
|
| Experiments were performed with 6.8-cm-diameter shaped charges that produced jets with tip velocities in excess of 1.0 cm/micrometers s. The charges were fired at short standoff into 1-inch steel and 10-inch reinforced concrete targets, and the jets were radiographed to observe their shapes and the distributions of mass and velocity. The experiments indicated that a mushroom-shaped jet tip can be effective in perforating hardened steel plates by the plugging process. ... |
|
| Feasibility of Using RECON III-B as a Coast Guard Hazardous Chemical Spill Response Tool |
SEP 1982 |
|
| Authors:
Graham S. Maners; Jeffrey Smith; Richard T. Walker; PERRY OCEANOGRAPHICS INC RIVIERA BEACH FL
|
| The test procedure and study documented by this report were performed to evaluate the ability of a remote vehicle system to perform pollutant sampling and vessel hull rupture plugging during hazardous chemical spills. Part I testing in which a RECON III-B vehicle was used to take water samples and plug test target holes using preselected equipment supplied by the U.S. Coast Guard has shown that a remote vehicle is capable ... |
|
| Large Plate CdTe Synthesis by Sealed Vessel Transport |
JUL 1982 |
|
| Authors:
A. R. Hilton; AMORPHOUS MATERIALS INC GARLAND TX
|
| The second quarterly report for the program to grow large plates of CdTe by vapor transport in a sealed system covers the period May-June, 1982. Altogether 14 attempts have been made to compound CdTe and then transport the material into a separate plate chamber. Plates 6'' in diameter have been formed only twice. Progress has been hampered by quartz failure believed due to attack by cadmium vapor. Failure to transfer ... |
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| Examinations of Simulated Borehole Specimens |
MAY 1981 |
|
| Authors:
Jay E. Rhoderick; Alan D. Buck; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| The quality of the contact portland cement grout and surrounding rock will be of prime importance if grout is used to seal boreholes for the isolation of nuclear waste. The contact will need to be tight and relatively impermeable. In the study reported herein, simulated borehole (SBH) specimens were prepared and tested in the laboratory. The specimens consisted of grout poured into a hole in sections of anhydrite rock core ... |
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| State-of-the-Art Survey of Hardware Delivery and Damage Inspection Methods for Coast Guard Hazardous Chemical Spill Response. |
AUG 1980 |
|
| Authors:
R. T. Walker; COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT
|
| This report is a study of methods that might be used by the Coast Guard, in accomplishing three tasks when responding to a hazardous chemical spill originating from a tank vessel or barge in the marine environment. The specific tasks are: (1) Damage inspection of the endangered vessel; (2) Delivery of Coast Guard hazardous chemical patching and plugging devices (e.g., polystyrene foam plug, evacuated foam plug, air/water inflatable bags); and ... |
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| Borehole Plugging Program (Waste Disposal). Report 1. Initial Investigations and Preliminary Data. |
JAN 1978 |
|
| Authors:
John A. Boa Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| This report covers efforts during the first year of the program. A study was initiated to find competent grouts to be used in stemming boreholes associated with radioactive waste disposal. The grouts must be durable for several thousand years and be essentially impermeable. In addition, the grouts should be pumpable to depths of several thousand feet into environments of high temperature. Grouts for use in both salt and nonsalt formations ... |
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| Survey Study of Techniques to Prevent or Reduce Discharges of Hazardous Chemicals. |
AUG 1975 |
|
| Authors:
Norman C. Henderson; Seshadri Srinivasan; Jerry A. Henkener; BATTELLE COLUMBUS LABS OHIO
|
| A program was conducted for the Office of Research and Development, U. S. Coast Guard, to investigate both off-the-shelf and conceptual techniques for preventing or reducing the discharge of hazardous chemicals from an endangered marine vessel or to stop or reduce the discharge from an actual leak. First, approximately 50 methods and/or types of equipment were identified which involved (1) patching or plugging a leak, (2) cargo off-loading, (3) cargo ... |
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| NUMERICAL, ANALYTICAL, AND EXPERIMENTAL INVESTIGATION OF PENETRATION BY KINETIC ENERGY PROJECTILES. |
MAR 1972 |
|
| Authors:
R. T. SEDGWICK; L. J. Hageman; SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA
|
| The HELP code has been modified to better model impact situations for which the target fails in the plugging mode. The model is described in detail, and the results of five impact calculations are presented and compared with Lagrangian and analytical predictions as well as with experiment. The HELP predictions were found to be in excellent agreement with experiment. (Author) |
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Reports by Keyword(s)
PLUGGING
