| Micro-Tensile Testing and 3D-EBSD Characterization of Pure Nickel Multi-Crystals (Preprint) |
Nov 2011 |
5 pages |
| Authors:
Paul A Shade; Michael A Groeber; Michael D Uchic; Todd J Turner; Dennis M Dimiduk; Christopher Woodward; Yoon-Suk Choi; Robert Wheeler; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIR METALS CERAMICS AND NONDESTRUCTIVE EVALUATION DIV/METALS BRANCH
|
 | A dual beam focused ion beam-scanning electron microscope (DB FIB-SEM) outfitted with an electron backscatter diffraction (EBSD) system was applied to characterize the internal microstructure and local lattice rotations within multi-crystal micro-scale test samples. The methodology outlined in this paper provides a high-fidelity 3D characterization of the internal grain structure of mechanical test samples in conjunction with knowledge of the external boundary conditions and measurement of the resultant stress-strain behavior, ... |
|
| Role of Friction on the Thermal Development in Ultrasonically Consolidated Aluminum Foils and Composites |
2011 |
15 pages |
| Authors:
Steve Koellhoffer; Jr Gillespie John W.; Suresh G. Advani; Travis A. Bogetti; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| Ultrasonic consolidation is a solid-state bonding process capable of producing metal and metal matrix composite parts. In this work a friction-based heat generation model is proposed to characterize the thermal development of ultrasonically consolidated aluminum foils and continuous fiber alumina reinforced aluminum metal matrix composite tape as a function of process control parameters. The friction coefficient between mating surfaces is determined experimentally, and the credibility of using both a constant ... |
|
| High-Power Solid-State Laser: Lethality Testing And Modeling |
NOV 2006 |
6 pages |
| Authors:
R. P. Abbott; C. D. Boley; S. N. Fochs; L. A. Nattrass; J. M. Parker; A. M. Rubenchik; J. A. Smith; R. M. Yamamoto; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| We describe a high-power solid-state laser built in our laboratory and its applications to defense missions. We discuss selected target interaction experiments recently performed with this laser. These involve the irradiation of painted aluminum foils at a power of about 25 kW, in the presence of high-speed airflow. The spot sizes were large, covering the range 9-16 cm. Penetration was achieved within a few seconds, depending on the spot size. ... |
|
| Autophagous Design and Material Options for Forward Deployed Aircraft IR Decoys with Reduced Risk of Foreign Object Damage |
07 MAR 2003 |
14 pages |
| Authors:
James P. Thomas; NAVAL RESEARCH LAB WASHINGTON DC
|
| New infrared (IR) decoys are being developed that will be forward launched from a moving aircraft. Autophagous (self-consuming) materials and components that quickly combust after deployment into harmless debris are considered in this study. The possibility of engine ingestion of an intact IR decoy strongly suggests the use of relatively 'soft' materials that will minimize damage. Based on this and other findings determined in this study, a laminate shell design ... |
|
| Final Report on Anomalous Energy Transfer From a Detonation |
APR 1998 |
52 pages |
| Authors:
Louis Zernow; ZERNOW TECHNICAL SERVICES INC SAN DIMASCA
|
| Early work (1974) by the Navy, which involved studies of the front portion of the detonation products from overdriven explosive cylinders of PETN, suggested two anomalous mechanisms of energy transfer in the forward direction. These included a "prompt" (optical) mechanism and a "detached plasma" mechanism. An independent study in 1983 by the present author indicated that the prompt mechanism could not be confirmed from the existing Navy data; neither could ... |
|
| Control of Acoustic Cavitation with Application to Lithotripsy |
03 MAR 97 |
221 pages |
| Authors:
Michael R. Bailey; TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS
|
| Control of acoustic cavitation (sound-induced bubble activity) is the subject of this dissertation. Application is to clinical lithotripsy where cavitation contributes to kidney stone comminution and tissue damage. An electrical spark at the near focus of an underwater ellipsoidal reflector was the acoustical source, as in the Dornier HM3 lithotripter. Experiments were done with rigid reflectors, pressure-release reflectors, and pairs of reflectors sharing a common focus and a controlled delay ... |
|
| Obtaining and Transferring Soils for In-Vial Analysis of Volatile Organic Compounds |
FEB 96 |
16 pages |
| Authors:
Alan D. Hewitt; Nicole J. Lukash; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
| The ability to retain volatile organic compounds (VOCs) while collecting and transferring intact soils for in-vial analysis was evaluated with field and laboratory samples. Experiments were designed to assess if VOC concentrations are maintained in an intact soil sample when (1) held for under an hour in a metal core liner, (2) held for days in a metal core liner sealed with TFE-flourocarbon sheets or aluminum foil (ASTM D4547-91), (3) ... |
|
| Development of an Ultra-Safe Rechargeable Lithium-Ion Battery |
AUG 95 |
4 pages |
| Authors:
J. K. Jacobs; ELECTROFUEL MFG CO TORONTO (ONTARIO)
|
|
| Development of an Ultra-Safe Rechargeable Lithium-Ion Battery |
JUL 95 |
7 pages |
| Authors:
J. K. Jacobs; ELECTROFUEL MFG CO TORONTO (ONTARIO)
|
|
| Development of an Ultra-Safe Rechargeable Lithium-Ion Battery |
15 MAY 95 |
6 pages |
| Authors:
J. K. Jacobs; ELECTROFUEL MFG CO TORONTO (ONTARIO)
|
|
| Development of an Ultra-Safe Rechargeable Lithium-Ion Battery |
95 |
6 pages |
| Authors:
J. K. Jacobs; ELECTROFUEL MFG CO TORONTO (ONTARIO)
|
|
| Electromagnetic Reverberation Characteristics of a Large Transport Aircraft |
JUL 94 |
95 pages |
| Authors:
Michael O. Hatfield; Gustav J. Freyer; D. M. Johnson; Charles L. Farthing; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| A demonstration test to investigate the reverberation characteristics of the avionics bay and cockpit of a typical commercial aircraft was conducted on a decommissioned Boeing 707-720B aircraft. The aircraft, located at the Aerospace Maintenance and Regeneration Center, Davis Monthan Air Force Base, Arizona, had a significant fraction of its electronics equipment remaining in the avionics bay and cockpit and the passenger compartment was essentially intact. A simulated avionics box was ... |
|
| Design and Development of a Horizontal Form/Fill/Seal Machine for an Automated Combat Ration Manufacturing Facility |
MAY 92 |
162 pages |
| Authors:
T. Descovich; RUTGERS - THE STATE UNIV NEW BRUNSWICK NJ CENTER FOR ADVANCED FOOD TECHNOLOG Y
|
| To satisfy requirements for productivity, versatility and flexibility, the horizontal form/fill/seal machine was specified and developed (based on the Tiromat 3000) to provide MRE pouch packaging rates of 100 per minute and for integration into the Combat Ration Advanced Manufacturing Technology Demonstration. Over 45,000 pouches have been produced during the test runs (including debugging) at rates up to 102 per minute demonstrated with residual gas levels below 10cc and meeting ... |
|
| Microwave Joining of Si SiC Al Si SiC, |
27 APR 1992 |
|
| Authors:
T. Y. Yiin; V. V. Varadan; V. K. Varadan; J. C. Conway; PENNSYLVANIA STATE UNIV UNIVERSITY PARK CENTER FOR THE ENGINEERING OF ELECTRO NIC AND ACOUSTIC MATERIALS
|
 | Microwave energy is used to join high dielectric loss Si-SiC to Si-SiC with Al foil as an interlayer. Rapid heating with moderate applied pressure has led to excellent bond strength in a short time. The joining was successfully achieved in about 5 minutes at 1250 deg C and 1.2 MPa axial pressure in a single mode microwave cavity without damaging the samples. The joined specimen interfaces were examined using optical ... |
|
| Optical Image Segmentation Using Wavelet Filtering Techniques |
DEC 90 |
97 pages |
| Authors:
Christopher P. Veronin; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| This research effort successfully implemented an automatic, optically based image segmentation scheme for locating potential targets in a cluttered FLIR image. Such a design is critical to achieve real-time segmentation and classification for machine vision applications. The segmentation scheme used in this research was based on texture discrimination and employs orientation specific, bandpass spatial filters as its main component. The orientation specific, bandpass spatial filters designed during this research include ... |
|
| No Effects of High-Peak-Power Microwave Pulses at 2.36 GHz on Behavioral Performance in Monkeys |
JUN 1990 |
20 pages |
| Authors:
John A. D'Andrea; B. L. Cobb; J. Knepton; R. N. Shull; B. J. Klauenberg; NAVAL AEROSPACE MEDICAL RESEARCH LAB PENSACOLA FL
|
| Recent development of new microwave systems with very high-peak-power microwave pulses and other unique characteristics has increased concern for the safety of personnel working in and around such equipment. The objective of this experiment was to determine the effects of high-peak-power microwaves produced by a virtual cathode oscillator (VIRCATOR) on the performance of rhesus monkeys (Macaca mulatta). The monkeys were repeatedly exposed to high-peak-power, short- duration microwave pulses (50-80 ns) ... |
|
| Arc-Sprayed Coatings for Electromagnetic Pulse Protection: Assessment of Physical and Electrical Properties |
SEP 89 |
78 pages |
| Authors:
Howard S. Savage; Ray G. McCormack; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The Army is studying methods of protecting sensitive electronic equipment against electromagnetic pulse (EMP) and radiofrequency interference (RFI) events. Part of this work focuses on metal arc-spray techniques as a potentially low-cost alternative to traditional EMP/RFI protection. Arc-sprayed metal coatings have been used for several years in different applications; however, little is known about the physical and electrical properties of these coatings. A better understanding of these properties would allow ... |
|
| Radiation Signatures from a External Relativistic Electron Beam |
DEC 88 |
68 pages |
| Authors:
Kyoum B. Wee; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| X-band radiation has been observed which occurs when an electron beam travelling in air traverses an aluminum plate. The radiation pattern is more complicated than can be explained with a simplified model of Cerenkov radiation from air and transition radiation from the aluminum-air interface. The empirical observation is that the peak angle decreases with energy until about 70 MeV, then increases with energy. The angular width of the peak distribution ... |
|
| Production of Retorted Meals in Coextruded Barrier Trays |
05 FEB 88 |
42 pages |
| Authors:
Kimberly G. Late; WORNICK SERVICES INC HOUSTON TX
|
| The contract involves the production of individual servings of food packaged in microwavable polymeric trays and thermostabilized. These products were all packed in microwavable barrier polymeric trays for further study for their possible inclusion in military feeding programs. The items that were actually produced were as follows: Fruit Mix, Sliced Peaches, Sliced Pears, Chocolate Pudding, Potatoes au Gratin, Rice in Butter Sauce, Beef Stew, Beef Strips with Green Peppers and ... |
|
| Diffraction Transition Radiation from Periodic Electron Bunches |
DEC 87 |
|
| Authors:
Young M. Lee; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Measurements of the first lobe of diffraction transition radiation from a hole in a thin aluminum foil for electron-beam energies of 32.9 MeV and 63.3 MeV has been made. The effect of the hole size was investigated using radii of 3 cm, 5 cm, and 7 cm. Although the measured peak angle and intensity are not well matched to the theoretical values, these experiments attempt to isolate the diffraction transition ... |
|
| Numerical Simulation of the Laser-Target Interaction and Blast Wave Formation in the DNA/NRL (Defense Nuclear Agency/Naval Research Laboratory) Laser Experiment |
09 MAY 86 |
|
| Authors:
John L. Giuliani Jr.; Margaret Mulbrandon; NAVAL RESEARCH LAB WASHINGTON DC
|
| A numerical simulation of the ablation of a planar, aluminum foil target by a neodymium laser in the presence of a 2.5 Torr nitrogen background gas is presented. The simulation includes inverse bremsstrahlung absorption during the laser pulse, the cold isotherm in the equation of state for solid aluminum, non-equilibrium chemistry for both the target material and the background gas, radiation transport of the continuum, ion and electron energy equations, ... |
|
| An Evaluation of Foods Processed in Tray Pack Versus Two Standard Food Service Containers. Part 2. Nutritional Analyses |
FEB 86 |
41 pages |
| Authors:
Leslie A. Wyzga; Mary V. Klicka; Christine A. Kubik; Joseph W. Szczeblowski; ARMY NATICK RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA
|
| In order to evaluate the effects of processing method and heating procedure on nutrient content, four different meat entrees were formulated and produced at the U.S. Army Natick, Research, Development and Engineering Center, then packaged and processed frozen, in a Tray Pack and in a no. 10 can. The objective of this study was to determine (1) the impact of the three packaging and processing variables on the nutrient content, ... |
|
| An Evaluation of Foods Processed in Tray Pack versus Two Standard Food Service Containers. Part 1. Sensory, Container and Bacteriological Tests |
FEB 86 |
75 pages |
| Authors:
Robert A. Kluter; Joseph W. Szczeblowski; Margaret Branagan; ARMY NATICK RESEARCH AND DEVELOPMENT CENTER MA
|
| Purpose of the study was to evaluate nine main meal foods over a 36- month period of storage. Three processing/packaging combinations of each food were included: (1) precooked frozen, packed in half-size steamtable aluminum foil trays; (2) heat-processed in cylindrical No. 10 cans; and (3) heat- processed in rectangular tray cans. Frozen products were stored at a constant - 18C; heat-processed products at 21 and 38C. Products were evaluated initially ... |
|
| Operational Guides for Frozen Products Prepared by the F. E. Warren Foil Pack Facility |
JUL 85 |
150 pages |
| Authors:
Vicki A. Loveridge; Janice E. Rosado; ARMY NATICK RESEARCH AND DEVELOPMENT CENTER MA
|
| Thirty-two operational guides are given for the procurement, issuing of ingredients, and preparation of frozen foods in the Air Force missile site feeding system. Each item's guide presents formulations for specific batch sizes and ingredients are listed in units used for procurement. Procedures for preparation incorporate methods and equipment used at the F.E. Warren Foil Pack Preparation Facility. Operational and Ingredient Room Notes cover information on alternate preparations and ingredients ... |
|
| Spectroscopic Measurements of the Laser-HANE Plasma |
17 FEB 1984 |
|
| Authors:
E. A. McLean; J. A. Stamper; H. R. Griem; A. W. Ali; B. H. Ripin; NAVAL RESEARCH LAB WASHINGTON DC
|
| To simulate HANE phenomena at various altitudes, a pulsed (5 nsec) Nd-laser is focused onto Al or C foil targets surrounded by an ambient gas (N2, H2) at pressures between 15 m Torr and 5 Torr. Temperatures and densities are derived from side-on, time-resolved and time-integrated measurements of absolute spectral line and continuum intensities emitted from the photoionized region ahead of the blast-wave front, and also in the region behind ... |
|
| Impact Composite Blade. |
17 JAN 1984 |
|
| Authors:
R. G. Carlson; DEPARTMENT OF THE AIR FORCE WASHINGTON DC
|
| The top portion of a composite (boron filament/aluminum matrix) blade which is useable in a fluid flow machine is made more resistant to impact energy by forming a cavity in the boron filament layer of the tip portion of each laminate (or ply) of the blade, then filling each cavity with a resin, and then bonding together the laminates with the resin-filled cavities therein. (Author) |
|
| Development of Copper-Coated Aluminum-Shielded Wire, |
17 NOV 1983 |
|
| Authors:
H. Saen; A. Mori; SUMITOMO ELECTRIC INDUSTRIES LTD KANUMA (JAPAN)
|
| Aluminum-shielded wires are usually used in short lengths of about 200 millimeters in many electronic devices because of their easy termination. However, some problems have occurred in shield effect. The authors have found that this is due to the increase of contact resistance between the aluminum and the drain wire, which is caused by aluminum oxide. To overcome this problem, they developed a new shield tape composed of aluminum foil ... |
|
| Instrumental Photon Activation Analysis Using the Linear Accelerator at the Naval Postgraduate School |
OCT 1982 |
|
| Authors:
Wayne Alan Fisher; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Charcoal, charcoal residue, potting soil, aluminum foil, bismuth germanate, and petroleum samples have been investigated using instrumental photon activation analysis (i.e., no radiochemistry). The major and minor elements routinely observed by this nondestructive method were: C, C1, Ca, Fe, Mg, Si, and K. A compreshensive review of the principles of IPAA was also included in the study. The principles were applied to a theroetical analysis of an oil sample in ... |
|
| Engineering and Development Support of General Decon Technology for the DARCOM Installation Restoration Program. Task 9. Lagoon Sediment Analysis |
AUG 81 |
12 pages |
| Authors:
Randall S. Wentsel; Antoine R. Ennis; Judith F. Kitchens; ATLANTIC RESEARCH CORP ALEXANDRIA VA
|
| The purpose of this task is to analytically determine the trinitrotoluene, dinitrotoleune and cyclotrimethylene trinitramine content of lagoon sediment from four Installations. To assess any safety problems in the treatment of explosive contaminated sediment, lagoon sediment samples were collected from four Army installations. Atlantic Research Corporation analyzed the sediments for percent moisture, TNT, RDX, 2,4-DNT and 2,6-DNT. The sediment samples were then sent to the Large Caliber Weapon Systems Laboratory ... |
|
| Development of a High Energy Density Capacitor for Plasma Thrusters. |
OCT 1980 |
|
| Authors:
Allen Ramrus; MAXWELL LABS INC SAN DIEGO CA
|
| This report presents the results of a technology program directed towards the development of a long-life, high-energy density capacitor for application in spacecraft. The capacitor has low inductance (approximately 20 nH) and an energy density up to 40 J/lb. Voltage vs. life curves are shown which indicate this capacitor will withstand over 10 to the 7th power discharges when operated at rated voltage of 2.2 kV. Materials were employed in ... |
|
| Metallic Coatings for Graphite/Epoxy Composites. |
MAY 1979 |
|
| Authors:
Christian J. Staebler Jr.; Bonnie F. Simpers; GRUMMAN AEROSPACE CORP BETHPAGE N Y
|
| Metallic coating systems for graphite/epoxy laminated aircraft structures were developed to provide protection against moisture penetration, electromagnetic interference (EMI), paint strippers and lightning strikes. Foil coatings and metal-filled resin coatings were evaluated to assess the protection ability in each of these areas. The foil coatings provided a significant reduction in the moisture penetration and the associated strength loss of the laminate after exposure to humidity and humidity-thermal spiking. Two techniques ... |
|
| Ultrasonically Activated Diffusion Bonding for Fluidic Control Assembly, |
FEB 1979 |
|
| Authors:
Howard A. Scheetz; Paul L. Coppa; Janet Devine; SONOBOND CORP WEST CHESTER PA
|
| Modified ultrasonic metal bonding equipment was used to develop a new fluidic stack assembly process. Ultrasonically activated diffusion bonding was successfully applied to aluminum laminates of different sizes (up to 1 by 1 inches), different foil thicknesses (2, 3, and 5 mils), and different number of layers (up to 18). Bonds were obtained without excessive deformation, within a few second of ultrasonic bonding time, on as-received surfaces, with special atmospheres, ... |
|
| Thermal Stress-Relieving Coupling Member and Support. |
28 FEB 1978 |
|
| Authors:
Richard L. Bates; DEPARTMENT OF THE NAVY WASHINGTON D C
|
| Improved thermal coupling for a fragile member having a low tolerance to mechanical stress is provided by use of thin sheets of common household aluminum foil having impressed thereon a uniform pattern of indentations. The indentations create raised projections which resiliently support the fragile member by the application of a minimum pressure to provide a uniform, non-varying contact therebetween, thereby enabling the mechanical motion therebetween to be absorbed without damage ... |
|
| The Application of Atomic Absorption Spectroscopy and Optical Microscopy to the Characterization of Sized Airborne Particulate in Dayton, Ohio |
1978 |
|
| Authors:
Lorelei Ann Krebs; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| A four-stage Anderson cascade impactor, fitted onto a standard high volume air sampler was used to collect 24-hour suspended particulate samples at four sites in the Dayton, Ohio, metropolitan area. The particulate was impacted on tared perforated aluminum foil disks and two sheets of Whatman 41 cellulose paper were used as backup filters. The suspended particulate was thus fractionated into five aero-dynamic size ranges, each of which can be related ... |
|
| An Experimental Technique to Evaluate the Blow-Off Effects of Nuclear Weapons. |
16 SEP 1977 |
|
| Authors:
John A. Schaeffel; Bobby R. Mullinix; William F. Ranson; ARMY MISSILE RESEARCH AND DEVELOPMENT COMMAND REDSTONE ARSENAL AL GROUND EQUIP/MISSILE STRUCTURES DIRECTORATE
|
| An experimental technique to simulate and evaluate the effects of high concentrations of x-rays resulting from a nuclear detonation on missile steuctures is presented. Data from 34 tests are included to demonstrate the technique. The effects of variations in the foil thickness, capacitor voltage, and plate thickness on the total impulse and maximum strain in the structure were determined. The experimental technique utilizes a high energy capacitor discharge unit to ... |
|
| Improved Cook-Off Coating. |
05 MAY 1977 |
|
| Authors:
Donald P. Crowley; DEPARTMENT OF THE NAVY WASHINGTON D C
|
| A flexible composite sheet coating for providing cook-off protection time for rocket motors, etc., comprising intumescent material in liquid form including mica flakes sprayed in sequence onto aluminum foil and glass cloth and bonded to the wall of a rocket structure. (Author) |
|
| Deterioration Studies and Storage Lifetime of Commercial Packaged Chemiluminescent Formulation. |
MAR 1976 |
|
| Authors:
D. B. Paul; E. F. Wiese; MATERIALS RESEARCH LABS MARIBYRNONG (AUSTRALIA)
|
| The commercial chemiluminescent lightstick ('Cyalume') has been tested under various conditions designed to enable an assessment of the factors which affect light output to be made. It has been shown that under ambient storage conditions the lightsticks have a service life of three years. There is no gradual decline in performance; after the onset of deterioration the failure point is rapidly reached. The most severe deterioration is produced by a ... |
|
| The Continuous Aluminum-Foil Hydrometeor Sampler; Design, Operation, Data Analysis Procedures, and Operating Instructions. |
11 JUL 1975 |
|
| Authors:
James F. Church; Konstantins K. Pocs; Alfred A. Spatola; AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MASS
|
| The continuous aluminum-foil hydrometeor sampler is an airborne meteorological instrument that uses a continuous ribbon of aluminum-foil which moves at a constant speed past a 14.51 sq cm sampling area aperture exposing the foil to the ambient air-flow inflight. The aluminum-foil is backed by a rotating drum for exposing the foil immediately behind the aperture as well as for metering the amount of foil exposed in relation to the drum's ... |
|
| Lossy High Voltage Feed-Thru Capacitor. |
13 MAR 1975 |
|
| Authors:
Arthur E. Brockschmidt; DEPARTMENT OF THE AIR FORCE WASHINGTON D C
|
| The patent application describes an extended foil feed-thru capacitor including a resistance located in the capacitor case, in electrical series with the capacitor. |
|
| Exploratory Development of New and Improved Self-Sealing Materials for Fuel Lines |
OCT 1974 |
81 pages |
| Authors:
R. M. Heitz; F. Hill; NORTHROP CORP HAWTHORNE CA AIRCRAFT DIV
|
| New and improved self-sealing fuel line composites were developed under this program. Fabric reinforced plastic and nonflowering integrated aluminum foil, fabric reinforced laminated fuel line composites employing compressed natural rubber foam as the sealant were fabricated which successfully sealed wounds inflicted by .30 and .50 caliber projectiles. The weight of these new self-sealing fuel line composites ranged from 0.83 to 1.28 lbs/sq ft. Results of pressure tests demonstrated that the ... |
|
| Protective Container Comprising Heat Sealable Laminate. |
11 JUN 1974 |
|
| Authors:
Edmond J. Carreras; Irving H. Curtis; DEPARTMENT OF THE NAVY WASHINGTON D C
|
| The patent describes a flexible container having a heat sealable laminated structure with layers of low density polyethylene face film, aluminum foil, nylon mesh and high density spun bonded polyethylene with aluminum coating. This laminate forms a rugged container providing environmental protection for enclosed articles. |
|
| Measurement of Advanced Composition Materials Shielding Effectiveness. |
JUN 1974 |
|
| Authors:
D. G. Kim; G. A. DuBro; R. C. Beavin; AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO
|
| The work was conducted to define the shielding characteristics of advanced composite materials. The report discusses the experimental evaluation of the shielding effectiveness of advanced boron and graphite composites with and without conductive layers at low-to-moderate frequencies. |
|
| Subcritical Crack Extension in 2S Aluminum and in Zinc Foils. |
JAN 1974 |
|
| Authors:
H. L. Smith; W. J. Ferguson; E. McLean; T. W. George; J. A. Kies; NAVAL RESEARCH LAB WASHINGTON D C
|
| The nucleation of advance fracture elements in metal foils was studied under the direction of G.R. Irwin in the years 1947 to 1949 in the Ballistics Branch of the Mechanics Division of the Naval Research Laboratory. Some heretofore unpublished results obtained on 2S aluminum and on zinc are analyzed here. The observations aid in the interpretation of fracture surface markings in other materials wherein discontinuous fracturing occurs. The spacings between ... |
|
| Development of Boron (on Carbon) - Aluminum Composite. |
DEC 1973 |
|
| Authors:
Paul Melnyk; Istvan J. Toth; TRW INC CLEVELAND OHIO
|
| E PROPERTIES. Processing variables of time, temperature and pressure were evaluated using boron fibers on both carbon, B(C), and tungsten B(W), substrates. Property evaluation was carried out using multi-ply v/o B(C)-2024 Al composite panels. The composite panels were fabricated by the foil-filament array, vacuum hot diffusion bonding process. Composite characterization included dimensional inspection, radiography, ultrasonic C-scan, mechanical testing, metallography, SEM and flatness measurement. In the 50 v/o B(W)-2024 Al system ... |
|
| Advanced Development on Vulnerability/Survivability of Advanced Composite Structures. |
15 JAN 1972 |
|
| Authors:
H. T. Clark; MCDONNELL AIRCRAFT CO ST LOUIS MO
|
|
| Advanced Development on Vulnerability/Survivability of Advanced Composite Structures. |
15 OCT 1971 |
|
| Authors:
H. T. Clark; MCDONNELL AIRCRAFT CO ST LOUIS MO
|
|
| Glass-, Boron-, and Graphite-Filament-Wound Resin Composites and Liners for Cryogenic Pressure Vessels |
FEB 68 |
18 pages |
| Authors:
Morgan P. Hanson; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
|
| An experimental investigation was conducted to determine the tensile strength properties of glass, boron, and graphite composites at 75, -320, and - 423 degrees F (297, 77, and 20 K). Composite tensile strength and interlaminar shear strength tests were made of Naval Ordnance Laboratory (NOL) rings. Tensile strengths of boron filaments were determined at 75 and -320 F (297 and 77 K). Strengths of glass composites were about 29 percent ... |
|
| Techniques for the Measurement of the Flexural Rigidity of Thin Films and Laminates |
APR 66 |
36 pages |
| Authors:
Howard L. Price; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER
|
| A method of measuring the flexural rigidity of thin films and laminates is described. The method employs the principle of the heavy elastic a which relates flexural rigidity to the deflection of the material under its own weight. Results are presented of tests to determine the stiffness of plastic films and plastic-metal laminates for use in space structures experiments. Tests were performed on untreated and aluminized polyETHYLENE TEREPHTHALATEJ FILM, ALUMINUM ... |
|
| Evaluation of a Subscale Internally Insulated Fiber-Glass Propellant Tank for Liquid Hydrogen |
OCT 65 |
32 pages |
| Authors:
Laurence J. Heidelberg; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
|
| The use of fiber-glass-reinforced plastics as a structural material, in conjunction with internally located foam insulation for liquid-hydrogen propellant tanks, was investigated by designing, fabricating, and experimentally evaluating a subscale tank. The tank consisted of three main components: a structural shell of filament-wound fiber glass, an internal insulation system of polyurethane foam encapsulated in a vacuum-tight jacket of aluminum-Mylar- aluminum foil laminate, and an impermeable liner of the same laminate. ... |
|
| Preliminary Investigation of Filament-Wound Glass-Reinforced Plastics and Liners for Cryogenic Pressure Vessels |
MAR 65 |
30 pages |
| Authors:
Morgan P. Hanson; Hadley T. Richards; Robert O. Hickel; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
|
| A preliminary investigation of the strength characteristics of filament-wound glass-reinforced plastic (FRF) materials was made at temperatures of 75 deg, -320 deg, and -423 deg F. The material was tested in the form of bidirectionally wound sheet material, unidirectionally wound Naval Ordinance Laboratory (NOL) type rings and bidirectionally wound cylinders. Also, a preliminary investigation of metallic and polymeric liners was made in FRP pressure vessels under cyclic strain of 2 ... |
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Reports by Keyword(s)
ALUMINUM FOIL
