| Test Operations Procedure (TOP) 4-2-013 Commodity Engineering Test Procedures, Recoilless Rifle Ammunition |
22-Sep-2009 |
91 pages |
| Authors:
ABERDEEN TEST CENTER MD
|
 | This TOP provides guidance for planning engineering tests of recoilless rifle ammunition. It outlines test phases to be included and points out important features to be considered for each phase. The procedures apply to other types of proving ground tests of recoilless rifle ammunition as well as engineering tests. |
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| Fixed-Wing Air Support Planning Models for the Brigade Combat Team |
12-Jun-2009 |
98 pages |
| Authors:
Scott C Campbell; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS
|
| The Army's transformation to the brigade combat team (BCT) as its primary combat employment unit has come at the cost of reduced organic firepower and armor under the modular force concept. As a result, greater emphasis and dependence will likely be placed upon fixed-wing fires in support of the BCT. Simultaneously, Air Force aircraft continue to experience reduced mission capable (MC) rates due to sustained combat operations and airframe fatigue. ... |
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| A Computational Study of the Energy Dissipation Through an Acrylic Target Impacted by Various Size FSP |
Jun-2009 |
14 pages |
| Authors:
C G Fountzoulas; J M Sands; P G Dehmer; J H Yu; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| Recent advances in the numerical techniques, higher computing power and materials model have allowed the accurate simulation of the ballistic impact into monolithic and multi-layer transparent armor configurations. In the current effort, the velocity profile during the ballistic impact of 0.22-cal and 0.15-cal fragment simulating projectiles (FSP) into a polymethyl-methacrylate (PMMA) target, which was a Plexiglas G manufactured by Atofina Chemicals was simulated using the ANSYS/AUTODYN commercial software. Our successful ... |
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| Operational Leadership and Advancing Technology |
04-May-2009 |
21 pages |
| Authors:
Rodney R LeMay; NAVAL WAR COLL NEWPORT RI JOINT MILITARY OPERATIONS DEPT
|
| Technology is advancing at an ever increasing rate in the 21st century. Many of these advances have been incorporated into the military. The latest gadgets are often bought from commercial vendors; the so called, off the shelf solution. Although this often provides a short term benefit, often too little analysis is conducted on to best integrate the technology into the way we fight. This paper uses a case study of ... |
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| Nondestructive Evaluation (NDE) of Sintered Silicon Carbide and its Correlation to Microstructure and Mechanical Properties |
Dec-2008 |
9 pages |
| Authors:
Steven Miller; Ernest Chin; William Green; James Campbell; Douglas M Slusark; M V Demirbas; Andrew Portune; Richard A Haber; Raymond Brennan; RUTGERS - THE STATE UNIV PISCATAWAY NJ
|
| High density is a critical acceptance criterion for armor ceramics. Quantifying the difference in density between what would be considered to be a good or bad region is complicated. As density is reduced from theoretical, does this infer the presence of defects? The minimum acceptable density that ensures favorable ballistic performance is unknown. This question concerns not only the presence of defective regions, which may include pores or inclusions, but ... |
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| Simulation and Design of Nanocomposite for Application in Ballistic Protection |
Dec-2008 |
10 pages |
| Authors:
Zheng-Dong Ma; Dongying Jiang; Yuanyuan Liu; Basavaraju Raju; Yushun Cui; ARMY TANK-AUTOMOTIVE AND ARMAMENTS COMMAND WARREN MI
|
| The objective of this research is to develop a modeling, simulation, and design tool for nanocomposites in order to predict, with accepted fidelity, nano-composite behaviors; and to design optimum nanocomposites for specific Army applications such as ballistic protection. Based on a unit cell model created for nanoclay-epoxy composites, the effect of nanoparticle distribution on the maximum stress developed in epoxy resin was investigated using the Meshfree Particle Method based simulation ... |
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| Heat Acclimatisation and Active Body Cooling Strategies to Mitigate Heat Stress for Operations Involving Bullet Proof Vests |
Dec-2008 |
8 pages |
| Authors:
L Law; C L Lim; DEFENCE MEDICAL AND ENVIRONMENTAL RESEARCH INST (SINGAPORE)
|
| Heat acclimatization (HA) and personal body-cooling are effective methods of heat stress mitigation. HA involves conditioning the body to function under hot conditions by exposing the individual to an incremental level of heat stress daily over 10 to 14 days. Although HA improves thermoregulation during heat exposure, effective physical heat exchange between the body and environment must still take place. Operating with body armour may limit the benefits of HA ... |
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| Microstructure and Properties of WC Spheres |
Nov-2008 |
32 pages |
| Authors:
Jeffrey J Swab; Justin Pritchett; Andrew A Wereszczak; Osama M Jadaan; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Tungsten carbide (WC) spheres are used as projectiles to study the ballistic performance of armor materials and systems. In order to properly understand and model the interaction between the projectile and the armor, it is necessary to have properties of both. In this study, the physical and mechanical properties of two commercially available WC spheres (nominally 0.25 inch in diameter) used in some ballistic impact studies were determined. One WC ... |
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| Ballistic Testing of SSAB Ultra-High-Hardness Steel for Armor Applications |
Oct-2008 |
52 pages |
| Authors:
Dwight D Showalter; Matthew S Burkins; William A Gooch; R S Koch; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The highest-performing U.S. steel alloys for armor-piercing (AP) bullet protection are manufactured to MIL-DTL-46100E, high-hardness armor (HHA) with a hardness range of 477 534 Brinell hardness number (BHN), and to MIL-A-46099C, dual hardness armor (DHA), which is produced by roll bonding a 601 712 BHN front plate to a 461 534 BHN back plate. While these materials still serve their intended applications, monolithic ultra-high-hardness (UHH) steels with a hardness of ... |
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| Transparent Nanoporous Glass-Polymer Composite for U.S. Army Applications |
Oct-2008 |
22 pages |
| Authors:
Daniel J O'Brien; Thomas F Juliano; Parimal J Patel; Steven H McKnight; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This report explores the manufacturing of a novel transparent polymer-glass composite. The material is created by infiltrating nanoporous glass (Vycor, Corning Inc.) with different polymers. The Vycor pores (4-6 nm) are much smaller than the wavelength of light thus, refractive index matching with the polymer is not necessary for transparency. Close to 90% of the pore volume can be filled by soaking the porous glass in methyl methacrylate and polymerizing ... |
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| Toward Modeling Limited Plasticity in Ceramic Materials |
01-Sep-2008 |
22 pages |
| Authors:
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The characteristic features of many armor-related ceramic materials are the anisotropy on the micro-scale level and the very limited, though non-vanishing, plasticity due to limited number of the planes for plastic slip. This work in progress is targeted toward revising phenomenological models of such materials with limited number of slip planes. In order to emphasize the key ideas of our approach, we illustrate the approach using the simplest possible model, ... |
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| 50th Anniversary Celebration: 46th Sagamore Army Materials Research Conference on Advances and Needs in Multi-Spectral Transparent Materials Technology |
01-Sep-2008 |
170 pages |
| Authors:
James W McCauley; James M Sands; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| Since 1954, the Sagamore Army Materials Research Conference has brought together scientists and engineers from government, industry, and academia for in-depth discussions on cutting edge materials technology issues of critical importance to the U.S. Army community. The 46th Sagamore Army Materials Research Conference continued this tradition with a focus on Advances and Needs in Multi-Spectral Transparent Materials Technology. Held at the Harbourtowne Golf Resort and Conference Center, St. Michaels, MD, ... |
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| Prototype Development of Low-Cost, Augmented Reality Trainer for Crew Service Weapons |
01-Sep-2008 |
83 pages |
| Authors:
Nathan Conger; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A significant emerging threat to coalition forces in littoral regions is from small craft such as jet skis, fast patrol boats, and speedboats. These craft, when armed, are categorized as Fast Inshore Attack Craft (FIAC), and their arsenal can contain an array of weapons to include suicide bombs, crew-served weapons, anti-tank or ship missiles, and torpedoes. While these craft often have crude weapon technologies, they use an asymmetric tactic of ... |
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| Advanced Collaborative System Optimization Modeler (ACSOM) (A.K.A. Armored Combat System Optimization Modeler) and Search, Explore and Learn (SEaL) Extension |
Jun-2008 |
20 pages |
| Authors:
Doug Rogers; Greg Hartman; Steve Rapp; GENERAL DYNAMICS CORP STERLING HEIGHTS MI LAND SYSTEMS DIV
|
| OVERVIEW: ACSOM Whole-system Trade Capabilities * ACSOM's Application Example - Large Program Trade Study * Extensions to Force on Force * Enhanced Capability (SEaL) - Large Bid Program Example. |
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| High-Speed Photographic Study of Wave Propagation and Impact Damage in Transparent Laminates |
01-Apr-2008 |
64 pages |
| Authors:
Elmar Straburger; M O Steinhauser; FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V MUNICH (GERMANY F R)
|
| Conventional transparent armor consists of glass laminates with polymer interlayer and backing. It has been demonstrated that the materials, the ratio of materials, and the type and thickness of the interlayers affect the ballistic efficiency of the laminate. Borosilicate glass, Starphire ultra-clear soda-lime glass, and the transparent, polycrystalline ceramic AION are materials being considered for transparent armor applications. A comprehensive series of Edge-on Impact tests has been conducted in order ... |
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| A New Computational Methodology for Structural Dynamics Problems |
APR 2008 |
62 pages |
| Authors:
J. N. Reddy; TEXAS A AND M UNIV COLLEGE STATION DEPT OF MECHANICAL ENGINEERING
|
| Most structural components encountered in army vehicles and armor can be classified as beams, plates, or shells for analysis purposes. While these structural elements are designed to function properly under thermo-mechanical loads encountered in their use, they do develop high stresses and experience high vibration frequencies that may make them non-functional in actual service conditions. The objective of this research is to develop consistent plate and shell theories and associated ... |
|
| Remote Excavation of Heavily Contaminated UXO Sites. The Range Master |
05 SEP 2007 |
94 pages |
| Authors:
Alan L. Crandall; USA ENVIRONMENTAL INC OLDSMAR FL
|
| USA Environmental, Inc., and Timberline Environmental Services, Inc., developed the Range Master, a remote controlled scraper with an integrated power screen, to excavate and sift the top 12 inches of heavily contaminated UXO sites. The Phase 1 effort demonstrated the manually operated Range Master at a controlled test site. The Phase 2 effort added system armor and the remote control systems. The Phase 2 Range Master was demonstrated at a ... |
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| Transparent Composite Utilizing Nonlinear Optical Polymers |
SEP 2007 |
30 pages |
| Authors:
Daniel J. O'Brien; Joshua A. Orlicki; J. D. Demaree; James K. Hirvonen; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| Polymer composites are attractive candidates for lightweight armor applications and can be made transparent by matching constituent refractive indices (RIs). Unfortunately, RI matching is difficult since the indices must be matched to approximately the third decimal place, and the matrix RI is very sensitive to factors such as temperature and stress state. Therefore, index matched systems are transparent only over a narrow temperature range. In order to capitalize on the ... |
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| Reflective Inserts to Reduce Heat Strain in Body Armor: Tests With and Without Irradiance |
AUG 2007 |
6 pages |
| Authors:
Bruce S. Cadarette; William R. Santee; Scott B. Robinson; Michael N. Sawka; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
|
| Delivered by U.S . Army Soldier IP : 153.103.190.11 Tue, 04 Dec 2007 irradiance. Aviat Space Environ Med 2007; 78:809 13. Background: This study evaluated adding reflective thermal inserts (RTI) to reduce the physiological strain during exercise-heat stress with a radiant load. RTI were used with a U.S. Army desert battle dress uniform, body armor, and helmet. Methods: Four male volunteers attempted four trials (10 min rest followed by 100 ... |
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| Analysis of Shock and High-Rate Data for Ceramics: Strength and Failure of Brittle Solids |
JUL 2007 |
48 pages |
| Authors:
Dennis E. Grady; APPLIED RESEARCH ASSOCIATES INC ALBUQUERQUE NM
|
| Ceramics based on composition of the light intermetallic compounds, have demonstrated considerable success as a barrier material in armor applications. The exceptional strength-to-density ratio of ceramic plays a crucial role in the positive performance of ceramics in the terminal ballistic environment. Even the higher density ceramics, such as tungsten based materials, show promising behavior in space-limited armor applications. The implementation, optimization and evaluation of ceramic in armor systems benefit from ... |
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| Ballistic Testing of Australian Bisalloy Steel for Armor Applications |
JUN 2007 |
18 pages |
| Authors:
Dwight D. Showalter; William A. Gooch; Matt S. Burkins; Victoria Thorn; Stephen J. Cimpoeru; Russell Barnett; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The U.S. Army Research Laboratory (ARL) and Australian Defense Science and Technology Organization (DSTO) have ballistically baselined a range of armor steels (277-321HB to 477-534HB) manufactured by the Australian company, Bisalloy Steels. Plate was tested in thicknesses from 10 mm to 20 mm and ARL and DSTO ballistically tested the plates against 0.30 caliber and 0.50 caliber armor piercing projectiles, 0.50 caliber and 20 mm Fragment Simulating Projectiles (FSPs) and ... |
|
| Shoaling of Aguadilla Harbor, Puerto Rico |
JUN 2007 |
196 pages |
| Authors:
Steven A. Huges; Lyndell Z. Hales; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| During construction of the Aguadilla Harbor, Puerto Rico, breakwater (June 1993 through July 1995), shoaling of the harbor was observed, and excessive wave heights in the harbor caused by refraction/diffraction were much larger than expected. Following construction, additional shoaling occurred even with only limited wave activity, and significantly excessive harbor shoaling occurred. The source of the harbor-shoaling sand was not known with certainty. The quantity of sediment deposited in the ... |
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| Field Survey on the Incidence and Severity of Motion Sickness in the Canadian Forces Enclosed light Armoured Vehicle |
APR 2007 |
|
| Authors:
Bob Cheung; Anne Nakashima; Kevin Hofer; Brian Coyle; DEFENCE RESEARCH AND DEVELOPMENT TORONTO (CANADA)
|
 | In the Advanced Vehicle Architecture for a Net-Enabled Combat Environment Technology Demonstrator Project (ADVANCE TDP), there is a need to define the requirements of the active suspension system and how the resulting motion affects performance and well-being (i.e. incidence and severity of motion sickness). At the request of the Director Armoured Vehicles Program Management (DAVPM), a study to investigate the effects of motion disturbance in the LAV III (light armoured ... |
|
| Posture Statement of General Peter Pace, USMC Chairman of the Joint Chiefs of Staff before the 110th Congress, Senate Armed Services Committee |
06 FEB 2007 |
14 pages |
| Authors:
Peter Pace; SENATE (UNITED STATES) WASHINGTON DC COMMITTEE ON ARMED SERVICES
|
| This document contains the testimony of General Peter Pace, U.S. Marine Corps, Chairman of the Joint Chiefs of Staff, before the 110th Congress, Senate Armed Services Committee, on 6 Feb 2007. The testimony begins with a brief review of the biennial National Military Strategy Risk Assessment, which depicts the threats the U.S. military faces around the world and how they will overcome them. These threats emanate from Iran, North Korea, ... |
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| Inroads in the Non-Invasive Diagnostics of Ballistic Impact Damage |
NOV 2006 |
8 pages |
| Authors:
W. H. Green; N. L. Rupert; Joe M. Wells; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The non-invasive/non-destructive x-ray computed tomography (XCT) technique is a widely applicable and powerful inspection modality for evaluation and analysis of shock and/or impact damage in armor materials, including metallic armors and armor ceramics, as well as materials in general. It presently appears that the noninvasive damage diagnostic approach with XCT provides the only sufficiently effective nondestructive modality for high resolution ballistic impact damage interrogation, spatial characterization, quantification, visualization, and 3-D ... |
|
| Investigation of Adaptive Control Approaches to Mitigate Shock Impact With Piezoceramics (Armor) |
NOV 2006 |
61 pages |
| Authors:
Marthinus Van Schoor; Jacob Pretorius; MIDE TECHNOLOGY CORP MEDFORD MA
|
| The U.S. Army Research Laboratory sought a Short-Term Analysis Services (STAS) program funded through Army Research Office (ARO) with Mide in the research, design, and development of an adaptive control system to mitigate the shock wave impact on an isolation system during and after a ballistic event. This report documents the initial work performed by Mide. |
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| The Influence of Armor Material Parameters on the Penetration by Long-Rod Projectiles |
SEP 2006 |
12 pages |
| Authors:
William P. Walter; Cyril L. Williams; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The Alekseevski-Tate equations have long been used to predict the penetration, penetration velocity, rod velocity, and rod erosion of long-rod projectiles or kinetic energy penetrators (1). These nonlinear equations were originally solved numerically, then by the exact analytical solution of Walters and Segletes (2, 3). However, due to the nonlinear nature of the equations, the penetration was obtained implicitly as a function of time, so that an explicit functional dependence ... |
|
| A CBO Study. The Army's Future Combat Systems Program and Alternatives |
AUG 2006 |
107 pages |
| Authors:
CONGRESSIONAL BUDGET OFFICE (U S CONGRESS) WASHINGTON DC
|
| The Army is attempting to transform itself from a force designed primarily to fight large and protracted wars in a limited number of locations to one capable of reacting rapidly to crises anywhere in the world. In its endeavor to make its combat units more versatile and agile, the Army is planning to replace its heavy, aging armored combat vehicles with newer, lighter systems that it expects will be as ... |
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| Lightweight and Advanced Materials for Defense: Materials for Military Ground Vehicles |
27 JUN 2006 |
19 pages |
| Authors:
Donald T. Ostberg; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| MATERIALS FOR TACTICAL TRUCKS: (1) Material must be readily available and fully developed. (RHA; High hard steel; Aluminum). (2) Research projects are ongoing to further develop advanced lightweight armors. (Composites; Ceramics; Titanium) (3) Long Term Armor Strategy (A+B design; Requirements are classified) |
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| Characterization and Model Assessment for Impact Damage Evolution in Functionally Graded Composites Using a Novel Nanosecond Deformation Measurement System |
30 APR 2006 |
48 pages |
| Authors:
Stephen R. McNeill; Michael A. Sutton; Hugh A. Bruck; SOUTH CAROLINA UNIV COLUMBIA OFFICE OF SPONSORED PROGRAMS
|
| The principal goal of this research is to experimentally measure the three-dimensional transient deformation processes that occur in armor systems undergoing a range of dynamic loading conditions. The development of a 3-D image correlation system using digital cameras capable of acquiring images every 5 nano-seconds were used. Due to the nature of the cameras. extensive algorithms for the removable of image distortions were required. The image correlation technology was transferred ... |
|
| DoD Force Protection Presentation |
13 APR 2006 |
13 pages |
| Authors:
Marilyn D. Freeman; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| The Army's scientific and technical vision is to pursue transformational capabilities for a joint and expeditionary army. The Army seeks to accelerate technology directly into Current Modular Force. Key focus areas are soldier protection technologies. |
|
| Energy Absorber for Vehicle Occupant Safety and Survivability |
27 MAR 2006 |
18 pages |
| Authors:
David M. Fox; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| Motivation for vehicle upper interior impact absorbers defined as follows: Interior surfaces of combat vehicles are generally relatively stiff due to armor protection; Tactical vehicle panels are becoming progressively more stiff as armor protection level increases; Hard surfaces in vehicle interior can pose a head injury hazard to occupants during impact events such as collisions and secondary impacts due to blast events; Turret rings and other interior assemblies offer additional ... |
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| The Development of a Multifunctional Antenna Precursor for Ground Vehicle Structures |
DEC 2005 |
28 pages |
| Authors:
Shawn M. Walsh; Gregory Teitelbaum; John Cook; Alvin Lim; Kirk Tackitt; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| U.S. Army transformation will require lighter, more rapidly deployable ground vehicle systems. Equally important will be the need for superior communication and sensor capability to detect and respond to friendly and hostile entities. The challenge is to consolidate the required armor, infrastructure, electronic hardware, and other systems into a lightweight vehicle structure. This particular research provides a very preliminary but nevertheless representative effort to explore conformal and multifunctional material systems ... |
|
| Thermodynamic of Brittle Fracture |
NOV 2005 |
16 pages |
| Authors:
Michael A. Grinfeld; Tim W. Wright; VOXTEL INC BEAVERTON OR
|
| This report outlines the results of the effort to suggest a theoretical method of describing brittle ceramic armor. We analyze thermodynamics and kinetics of brittle fracture by combining the Gibbs approach to the study of heterogeneous thermodynamic systems, the Griffith energetic criterion for crack growth, and the Onsager irreversible thermodynamics. The central object of the study is the exchange between accumulated elastic energy and "chemical" energy accumulated in cohesive bonds ... |
|
| Effects of Forest on Blast Noise |
OCT 2005 |
29 pages |
| Authors:
Michelle E. Swearingen; Michael J. White; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
|
| Low-frequency impulsive noise, characteristic of demolitions, artillery, and armor, is difficult to mitigate. In 2001, ERDC-CERL researchers were tasked to study the potential attenuation caused by a forest. After a thorough review of published work, it was determined that an experiment was necessary. This took place in July 2002 at the Lone Star Army Ammunition Plant in Texarkana, Texas. This report presents the data analysis and draws conclusions about the ... |
|
| Adequacy of United States Army Tactical Doctrine for the Successful Employment for Armor in Offensive Urban Operations |
28 SEP 2005 |
96 pages |
| Authors:
Lawrence L. Shepherd; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS
|
| This study examined the adequacy of U.S. Army Tactical Doctrine for the successful employment of armor in offensive urban operations. Historical case studies on Aachen, Beirut, Grozny, and Baghdad were used to draw lessons learned. These lessons learned were then compared to current U.S. Army Tactical Doctrine at the company team and platoon levels. The comparisons found U.S. Army Tactical Doctrine to be adequate to employ armor successfully in offensive ... |
|
| Effects of Machining on the Uniaxial and Equibiaxial Flexure Strength of CAP3 AD-995 Al2O3 |
SEP 2005 |
70 pages |
| Authors:
Andrew A. Wereszczak; Jeffrey J. Swab; Reuben H. Kraft; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| The effect of surface condition on the uniaxial and equibiaxial flexure strength of CoorsTek's CAP3 AD-995 alumina was examined. (Note that this material was found not to be the same as CoorsTek's AD-955 alumina-a comparison and discussion of the differences are provided in this report.) The following four surface conditions were considered: as-fired (i.e., unmachined) surfaces; the condition produced by CoorsTek's standard surface-grinding procedures (i.e., the condition they will provide ... |
|
| Mechanisms of Photo Degradation for Layered Silicate-Polycarbonate Nanocomposites |
SEP 2005 |
16 pages |
| Authors:
James M. Sloan; Philip Patterson; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
|
| The use of advanced lightweight materials to improve combat survivability has been of crucial interest to the U.S. Army for a number of years. Specifically, hybrid organic/inorganic polymer matrix nanocomposites show promise in providing many of the physical properties required (i.e., lightweight structure, rugged abrasion resistance, and high ballistic impact strength). However, as with any polymer system, these materials are susceptible to degradation over time when exposed to various environmental ... |
|
| Fourth Generation War: Paradigm for Change |
JUN 2005 |
|
| Authors:
Ghanshyam S. Katoch; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis argues that a shift in the doctrine, organization, equipment and training of armies is required due to a shift in the nature of war. This thesis refers to the "new way of war" as Fourth Generation War (4GW) and this analysis is restricted to the army component of the defense forces. Armies at present are geared to fight the earlier generation of attrition and maneuver wars. In 4GW, ... |
|
| Joint Survivability Experiment with NAVAIR |
11 APR 2005 |
15 pages |
| Authors:
Syed Mohammad; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| Introduction and Project Scope: Requirements driven by TARDEC Survivability Technology Area "customer", Demonstrating and Evaluating new technology in areas of survivability to aid soldier situational awareness and protection, Simulation environment to provide modeling for sensors, countermeasures, decision aids, weapon systems, armor, vehicle mobility, and human performance models. NAVAIR to provide airborne assets for intelligence reporting and air support. |
|
| Maneuver Branch: A Vision for the Future |
18 MAR 2005 |
27 pages |
| Authors:
Robert Valdivia; ARMY WAR COLL CARLISLE BARRACKS PA
|
| Three significant realities are serving as the catalyst for change of the future Army. They are the fact that we are at war and will remain at war for an undetermined period of time; the transformation to modular Brigade Combat Teams; and the development and acquisition of the Future Combat System (FCS). The scope of this paper examines the traditional Combat Arms branches of Infantry, Armor, Field Artillery and Air ... |
|
| Synthetic Multi-Functional Materials for Structural + Ballistic and Blast Protection |
MAR 2005 |
128 pages |
| Authors:
Kenneth S. Vecchio; CALIFORNIA UNIV REGENTS SAN DIEGO LA JOLLA CA
|
| This program was part of the DARPA program on Synthetic Multi- Functional Materials focused on structural plus ballistic and blast protection. During the first period of this program we have been focusing on developing both intrinsic and embedded functionality into a class of metal-intermetallic laminate (MIL) composites based on the Ti-Al system. These layered composites were initially developed as part of an Army MURI program at the University of CA, ... |
|
| Marine Lethal Torso Injuries: Preliminary Findings |
28 FEB 2005 |
4 pages |
| Authors:
ARMED FORCES INST OF PATHOLOGY WASHINGTON DC
|
| Between March 19, 2003 and December 31, 2004, 315 Marines died from combat injuries during Operation Iraqi Freedom. Nearly 24% (74) died from a primary lethal injury of the torso. Another 54 individuals had multiple lethal injuries with at least one lethal injury of the torso. This summary presents our preliminary findings on the number and distribution of primary lethal injuries of the torso among Marines. |
|
| iMAST Quarterly, Number 2, 2005 |
Jan-2005 |
9 pages |
| Authors:
Timothy J Eden; PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB INST FOR MANUFACTURING AND SUSTAINMENT TECHNOLOGIES
|
| World events have emphasized the importance of developing light weight, high-performance materials, especially those that can be used in armor and blast resistance structures. Recent work at Penn State's Applied Research Laboratory has produced some high performance aluminum alloys. These materials, produced by Spray Metal Forming, have superior properties which have shown potential for use in military vehicles to provide light-weight ballistic protection. |
|
| Integration and Test of a Dual Purpose Pulse Forming Network into the P&E HWIL SIL |
DEC 2004 |
9 pages |
| Authors:
E. Bradshaw; M. Chait; G. Danielson; D. Herrera; G. Khalil; E. Leathers; P. Argo; A. Bard; G. Frazier; B. Marinos; ARMY TANK-AUTOMOTIVE COMMAND WARREN MI
|
| A Dual Purpose Pulse Forming Network (DP-PFN) has been developed to power both the Electro-Thermal- Chemical (ETC)/Electro-Thermal-Ignition (ETI) lethality capability and the Electro-Magnetic Armor (EMA) survivability capability improvements envisioned for future hybrid-electric combat vehicles. The DP-PFN is capable of providing two types of energy pulses to accommodate gun and armor loads: extremely short pulse lengths for the EMA, or longer pulse lengths for the ETI/ETC Gun. This capability of the ... |
|
| Failure of Tungsten Heavy Alloys Subjected to Dynamic Transverse Loading |
DEC 2004 |
9 pages |
| Authors:
K. Tarcza; S. J. Bless; E. Taleff; TEXAS UNIV AT AUSTIN INST FOR ADVANCED TECHNOLOGY
|
| A new type of experiment has been developed to subject rods to dynamic transverse impact similar to that encountered in attack of modern armors. Two tungsten alloys with five different surface finishes were examined. It was found that there were two failure modes: one involved transverse fracture that initiates from surface flaws. The other was a consequence of gouge instability on the sliding surface. Polishing suppressed the first mode and ... |
|
| Modeling Thermal Ignition of Energetic Materials |
NOV 2004 |
26 pages |
| Authors:
Norman J. Gerri; Ellen Berning; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| This report documents an attempt to computationally simulate the mechanics and thermal regimes created when a threat perforates an armor envelope and comes in contact with stowed energetic material (M30 granular propellant). Fragment simulating penetrators (FSP) of 208 and 830 gr were fired into plates of AISI 4340 steel hardened to a Rockwell C + 40. The existing fragment were captured in a polymetric material with a melting point equivalent ... |
|
| Inspections of Previously Monitored Rubble-Mound Coastal Structures |
SEP 2004 |
54 pages |
| Authors:
Robert R. Bottin Jr.; Larry R. Tolliver; Glenn B. Myrick; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICSLAB
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| This report presents results of inspections of rubble-mound coastal structures monitored previously under the Monitoring Completed Navigation Projects (MCNP) Program. Expedient, low-cost walking inspections were performed at 11 sites. Positions of breakwater and jetty armor units were compared with their positions in previous aerial photography and photogrammetric surveys. Settlement of portions of the structures as well as voids in their armor cover also was noted, and photographs of the structures ... |
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| Power Supply and Integration in Future Combat Vehicles |
01 JUN 2004 |
13 pages |
| Authors:
Gus Khalil; Edward Barshaw; Eugene Danielson; Michael Chait; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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| Future combat vehicles will require higher agility and unconventional weapons and armor systems such as Electromagnetic (EM) or Electro-Thermal Chemical (ETC) Guns, electro-Magnetic (EM) Armor and Directed energy Weapons (DEW). To meet these requirements, hybrid electric power system has been identified as the best alternative to support the demand for propulsion, continuous axillary power demand and pulsed power demand for weapons and armor. Although the development of these weapons and ... |
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| Synergistic Effects of Multiple Countermeasures and Their Implications for TOSOM Modeling |
23 MAR 2004 |
7 pages |
| Authors:
Daniel Hicks; William Jackson; Jack Reed; ARMY TANK-AUTOMOTIVE AND ARMAMENTS COMMAND WARREN MI
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| The Threat Oriented Survivability Optimization Model (TOSOM) treats multiple countermeasures as independent operators without either synergistic or anti-synergistic effects. This is accomplished simply by: Effectiveness (CM total) = 1 - ((1 - Eff(CM1)) x (1 - Eff(CM2) x (1 - Eff(CM3)) x ... x (1 - Eff(CMn)). While this methodology may be appropriate for some countermeasure combinations such as false target generator and Active Protection Systems, it is not for ... |
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Reports by Keyword(s)
ARMOR
