10
10.0
Nov 6, 2020
11/20
by
The Well Worship Center, Derby, Kansas
audio
eye 10
favorite 0
comment 0
The Dying Words of Jesus - Part 1 -Father Forgive Them
Topics: Jesus Prayed on the Cross In His Agony, Isaiah 53 Was Fulfilled In Its Entirety, Jesus Identified...
The grades of stainless steel have several applications such as aerospace, medical, power plants, and automobile industry. Especially stainless steel 316L (SS316L) has been successfully utilized in many sectors because of its excellent corrosion resistance, self-healing property, biocompatibility, high fatigue life and creep resistance. This reported work is a study of SS316L in gas tungsten arc welding (GTAW) in order to enhance the strength of the weldment. The GTAW butt joint of SS316L was...
Topics: GTAW, Micro Hardness, SS316L & Tensile Test
610
610
texts
eye 610
favorite 7
comment 0
49 pg
Topics: MACHINING, 3D MACHINING, MANUFACTURING, MILLING, MACHINE SHOP, BRASS, METAL, TOOL, ELECTRICAL...
310
310
texts
eye 310
favorite 0
comment 0
320pg
Topics: MACHINING, 3D MACHINING, MANUFACTURING, MILLING, MACHINE SHOP, BRASS, METAL, TOOL, ELECTRICAL...
0
0.0
Aug 17, 2020
08/20
by
Royston, Angela
texts
eye 0
favorite 0
comment 0
32 pages : 22 cm
Topics: Hardness -- Juvenile literature, Hardness
124
124
texts
eye 124
favorite 1
comment 0
240 PG
Topics: mechine mechanical engineering, metal, workshop, welding, tools, manufacturing, tool and die, ASME,...
Aluminum MMC’s are widely used in various applications because of their higher mechanical and physical properties when compared with their base Al alloy. This paper focuses on the change in mechanical properties of various Al/SiC composites fabricated by using stir casting method. Effect of SiC reinforcement in different Al alloys on mechanical properties like hardness, tensile strength, wear test, percentage elongation, residual stress measurements are discussed in detail. For this purpose...
Topics: Al/SiC, Al LM-25, Hardness, MMCs, Tensile Strength, Wear Resistance, Response Surface Methodology.
Experiments were conducted to study the cohesion of metals with surface films of varying thickness and hardness. It was established that the deformation necessary for the occurrence of cohesion is determined by the correlation of mechanical properties of the films and the base metal. The greater the relative hardness of the film the lower the deformation necessary for the occurrence of cohesion. The films are as plastic as the base metal prevent cohesion, since in this case it is impossible for...
Topics: NASA Technical Reports Server (NTRS), COHESION, DRY FRICTION, METAL SURFACES, OXIDE FILMS,...
The adhesion, friction, and micromechanical properties of ion-beam-deposited boron nitride (BN) films are reviewed. The BN films are examined in contact with BN metals and other harder materials. For simplicity of discussion, the tribological properties of concern in the processes are separated into two parts. First, the pull-off force (adhesion) and the shear force required to break the interfacial junctions between contacting surfaces are discussed. The effects of surface films, hardness of...
Topics: NASA Technical Reports Server (NTRS), ADHESION, BORON NITRIDES, DEPOSITION, FRACTURE MECHANICS, ION...
Since 1987 experiments dealing with comet nucleus phenomena have been carried out in the DFVLR space simulation chambers. The main objective of these experiments is a better understanding of thermal behavior, surface phenomena and especially the gas dust interaction. As a function of different sample compositions and exposure to solar irradiation (xenon-bulbs) crusts of different hardness and thickness were measured. The measuring device consists of a motor driven pressure foot (5 mm diameter),...
Topics: NASA Technical Reports Server (NTRS), COMET NUCLEI, COMETS, DUST, ELECTRON MICROSCOPY,...
A diamondlike carbon film is deposited in the surface of a substrate by exposing the surface to an argon ion beam containing a hydrocarbon. The current density in the ion beam is low during initial deposition of the film. Subsequent to this initial low current condition, the ion beam is increased to full power. At the same time, a second argon ion beam is directed toward the surface of the substrate. The second ion beam has an energy level much greater than that of the ion beam containing the...
Topics: NASA Technical Reports Server (NTRS), CARBON, DEPOSITION, HARDNESS, ION BEAMS, THIN FILMS, ARGON,...
Pd-Cr alloys were investigated by thermal analysis, hardness measurements, X-ray analysis, microscopic examination of etched pieces, and temperature-resistance curves of the solid alloys. Only one compound, Pd2Cr3, m, 1389 deg, is formed. It possesses a cubic face centered lattice and forms with excess Pd a series of solid solutions with a minimum m.p. at 45 atoms% Pd. Hardness maximum appears at the Pd2Cr3 point. Pd2Cr3 forms no solid solutions with Cr but eutectic point appears at 25 atoms%...
Topics: NASA Technical Reports Server (NTRS), BINARY ALLOYS, CHROMIUM ALLOYS, CHROMIUM COMPOUNDS,...
81
81
Mar 24, 2015
03/15
by
Pankaj Oudhia
movies
eye 81
favorite 1
comment 0
Indian states Chhattisgarh and Odisha are rich in Biodiversity. Pankaj Oudhia is documenting Traditional Medicinal Knowledge about herbs and insects since year 1990. This series is an effort to present Herbal Wealth of these states through movies. There are over 15000 movies in this series. Related Links Encyclopedia of Tribal Medicines by Pankaj Oudhia https://archive.org/details/EncyclopediaOfTribalMedicinesByPankajOudhia Compilation of Pankaj Oudhia’s Research and Documentation work on...
Topics: Tribal Medicinal Plants of Chhattisgarh, Tribal Medicines of Agariya Tribe, Tribal Medicines of...
231
231
Jul 25, 2010
07/10
by
Adamczyk, John J.; Celestina, Mark L.; Beach, Tim A.; Barnett, Mar
texts
eye 231
favorite 0
comment 0
This work outlines a procedure for simulating the flow field within multistage turbomachinery which includes the effects of unsteadiness, compressibility, and viscosity. The associated modeling equations are the average passage equation system which governs the time-averaged flow field within a typical passage of a blade row embedded within a multistage configuration. The results from a simulation of a low aspect ratio stage and a one-half turbine will be presented and compared with...
Topics: DIFFUSION, NONTHERMAL RADIATION, PHOTOCHEMICAL REACTIONS, HARDNESS, SURFACE FINISHING, THIN FILMS,...
New alloys offer wider range of physical properties - General Findings, Inc.
Topics: alloy, annealed, hardness, findings, tensile, solution, elongation, beryllium, properties, knoop,...
346
346
movies
eye 346
favorite 4
comment 0
Created in 1959, "Paths of Steel" shows United States Steel and its operations in Pittsburgh at the height of the company's dominance of the steel industry. The movie looks at some of the research being applied to create innovation in the materials industry through alloys, heat treatment, and forging or rolling. The film was directed by James Petrie, a cameraman, editor, and director who made training and motivational films with Louis de Rochemont and via Potter, Orchard &...
Topics: Steel, Stainless Steel, Tin, Alloy Steel, Steel Can, Metallurgy, Hardness Testing, Radioactivity,...
The shapes of single event transients in linear bipolar circuits are distorted by exposure to total ionizing dose radiation. Some transients become broader and others become narrower. Such distortions may affect SET system error rates in a radiation environment. If the transients are broadened by TID, the error rate could increase during the course of a mission, a possibility that has implications for hardness assurance.
Topics: NASA Technical Reports Server (NTRS), BIPOLARITY, ERRORS, RADIATION DOSAGE, LINEAR SYSTEMS,...
Short-term hot-hardness studies were performed with carburized and hardened AISI 8620, CBS 1000, CBS 1000M, CBS 600, and Vasco X-2 steels. Case and core hardness measurements were made at temperatures from 294 to 811 K (70 to 1000 F). The data were compared with data for high-speed tool steels and AISI 52100. The materials tested can be ranked as follows in order of decreasing hot-hardness retention: (1) Vasco X-2; equivalent to through-hardened tool steels up to 644 K (700 F) above which Vasco...
Topics: NASA Technical Reports Server (NTRS), HARDNESS TESTS, HIGH TEMPERATURE RESEARCH, ROCKWELL HARDNESS,...
A ferrographic analysis was used to determine the types and quantities of wear debris generated during accelerated rolling contact fatigue tests. The five-ball rolling contact fatigue tester was used. Ball specimens were made of a corrosion resistant, high-temperature bearing steel. The lubricant was a superrefined naphthenic mineral oil. Conditions included a maximum Hertz stress of 5.52 10 to the 9th power Pa and a shaft speed of 10,000 rpm. Four types of wear debris were observed: (1) normal...
Topics: NASA Technical Reports Server (NTRS), BALLS, CORROSION RESISTANCE, FATIGUE TESTS, FERROMAGNETISM,...
Low mass bearing balls with hardened iron-plated surfaces can eliminate problems of low fatigue strength and flexure fatigue, and lead to increased life and reliability of high speed ball bearings. Low mass balls exert lower centrifugal forces on outer race of bearing thus eliminating detrimental effect of high speed operation.
Topics: NASA Technical Reports Server (NTRS), BALL BEARINGS, CARBON STEELS, FRICTION REDUCTION, HARDENING...
Metal to ceramic joining plays a key role for the integration of ceramics into many nuclear, ground and aero based technologies. In order to facilitate these technologies, the active metal brazing of silicon carbide (CVD beta-SiC, 1.1 mm thick, and hot-pressed alpha-SiC, 3 mm thick) to the refractory metals molybdenum and tungsten using active braze alloys was studied. The joint microstructure, composition, and microhardness were evaluated by optical microscopy (OM), scanning electron...
Topics: NASA Technical Reports Server (NTRS), CHEMICAL BONDS, HARDNESS TESTS, SILICON CARBIDES, THERMAL...
The Radiation Hardened Electronics for Space Environments (RHESE) project consists of a series of tasks designed to develop and mature a broad spectrum of radiation hardened and low temperature electronics technologies. Three approaches are being taken to address radiation hardening: improved material hardness, design techniques to improve radiation tolerance, and software methods to improve radiation tolerance. Within these approaches various technology products are being addressed including...
Topics: NASA Technical Reports Server (NTRS), RADIATION HARDENING, MICROELECTROMECHANICAL SYSTEMS,...
A theory for describing the evolution of the median/radial crack system in the far field of sharp-indenter contacts is developed. Analysis is based on a model in which the complex elastic/plastic field beneath the indenter is resolved into elastic and residual components. The elastic component, being reversible, assumes a secondary role in the fracture process: although it does enhance downward (median) extension during the loading half-cycle, it suppresses surface (radial) extension to the...
Topics: DTIC Archive, Lawn ,B R, CALIFORNIA UNIV BERKELEY DEPT OF MATERIALS SCIENCE AND ENGINEERING,...
Two heats of HF-1 steel which were purchased and metallurgically characterized in the previous phase of this project were used to determine the efforts of vendor and/or cooling method (used to produce the steel) on the production of the M549 projectile warhead metal parts. Parameters investigated included mult-parting, forging, rough-machining and nosing. The study included the design and development of tooling and forging and machining parameters in attempt at a cost-effective manufacturing...
Topics: DTIC Archive, Kane, J F, SCRANTON ARMY AMMUNITION PLANT PA, *ORDNANCE STEEL, *PROCESSING,...
As part of a program to determine the viability of underwater wet welding for repair of U. S. Navy surface ships, eight commercially available shielded metal arc wet welding electrodes were evaluated by a series of screening tests. Two E7014 type electrodes provided superior results and were used for welding procedure qualification testing on ASTM A-36 steel with a carbon equivalent of 0.35. Qualification testing included visual, liquid penetrant and radiographic inspection, as well as bend...
Topics: DTIC Archive, West, Thomas C, NAVAL SEA SYSTEMS COMMAND WASHINGTON DC, *ELECTRODES, *UNDERWATER,...
WADD gear machine was used to evaluate the gear load-carrying capacities of three high-hot-hardness gear materials, Cartech EX 00014, CBS 1000 M, and Vasco X-2 ESR, at 74 deg C and 218 deg C (165 deg F and 425 deg F). One MIL-L-23699C lubricant was used to evaluate all three gear materials at the two test temperature levels. Three additional military specification type turbine engine lubricants were included in the evaluation of the Vasco X-2 ESR gear material.
Topics: DTIC Archive, Baber, B. B., SOUTHWEST RESEARCH INST SAN ANTONIO TX FUELS AND LUBRICANTS RESEARCH...
Pre-mixed polysulphide sealants were stored at -20, -30 and -40 C for selected intervals and then tested for conformity for the requirements of the appropriate MIL-specification in regard to cure rate or hardness, application time, tack-free time and peel strength. For Pro-Seal 899 and PR-1750 sealants, no significant change in hardness or peel strength occurred after prolonged storage at temperatures of -20 C and below; a minor decline in peel strength occurred with PR-1422. Application...
Topics: DTIC Archive, Barber, John W, MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA), *FREEZING,...
Theory and numerical results are given for a program simulating two- dimensional granular flows (1) between two infinite, counter-moving, parallel, roughened walls, and (2) for an infinitely-wide slider. Each granule is simulated by a central repulsive force field ratcheted with force restitution factor to introduce dissipation. Transmission of angular momentum between particles occurs via Coulomb friction. The effect of granule hardness is explored. Gaps from 7 to 28 particle diameters are...
Topics: DTIC Archive, Elrod, Harold G, NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS...
461
461
Feb 2, 2008
02/08
by
Frederick Henry Hatch
texts
eye 461
favorite 0
comment 0
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Topics: rocks, igneous, occurs, felspar, crystals, minerals, occur, quartz, mineral, hardness, crossed...
Source: http://books.google.com/books?id=Xu03AAAAMAAJ&oe=UTF-8
Hardness is defined as the withstanding capability of metal against penetration. Welding produces metallurgical transformations. Evaluation of hardness gives insight into these transformations. A proper study on weldment micro hardness will pave the path to enhance the mechanical reliability of the weldment. Thus, a study on mechanical and microhardness properties of 5052 aluminum alloy weldment using nonpulsed and pulsed current welding at frequencies of 2,4,6Hz has been carried out in the...
Topics: 5052 Aluminum Alloy, Gas Tungsten Arc Welding, Micro Hardness, Ultimate Tensile Strength (UTS),...
The effect of various quenching media on the hardness and microstructure of 60 NITINOL (60 NiTi) were evaluated. Specimens of 60 NiTi were heat treated in air at 1000 degC for 30 min or 2 hr, then quench cooled by one of seven different methods. The microstructure and hardness of this material was examined post heat treatment. The results indicated that the quench method had little effect on the resulting hardness and microstructure of 60 NiTi.
Topics: NASA Technical Reports Server (NTRS), HARDNESS, TITANIUM ALLOYS, NICKEL ALLOYS, BINARY ALLOYS,...
The Coralville flood control dam is located in Johnson County, Iowa, about three miles north of Iowa City. The lake, at the conservation pool, 680 feet mean sea level (msl), is 21.7 miles long with a surface area of 2,650 acres, and at spillway level (712 feet msl) is 45.1 miles long with a surface area of 25,040 acres. Prior to February 1992 the level of the pool was normally reduced to 675 feet msl in late winter to facilitate the use of the impoundment for flood control. At this level, the...
Topics: DTIC Archive, Espinosa-Villegas, Claudia, IOWA UNIV IOWA CITY COLL OF ENGINEERING, *WATER FLOW,...
A material for use as a mechanical component is formed of a superelastic intermetallic material having a low apparent modulus and a high hardness. The superelastic intermetallic material is conditioned to be dimensionally stable, devoid of any shape memory effect and have a stable superelastic response without irrecoverable deformation while exhibiting strains of at least 3%. The method of conditioning the superelastic intermetallic material is described. Another embodiment relates to...
Topics: NASA Technical Reports Server (NTRS), INTERMETALLICS, MODULUS OF ELASTICITY, DEFORMATION,...
In this research, new Technique was developed to perform three different operations in the same stroke, namely conventional spinning, shear spinning (wall thickness reduction) and burnishing processes. Experimental work was conducted and confirmed the success of the presented technique. The response of the product quality and required load to process parameters such as rotational speed (46,76,150 and 230 rpm), axial feed (0.15,0.3,0.6 and 1.21 mm/rev), burnishing load (20, 25 and 30 KN),...
Topics: Combined Processes, Conventional Spinning, Shear Flow Forming, Ball Burnishing, Hardness &...
Composite materials are becoming more important in the construction of aerospace structures. Aircraft parts made from composite materials, such as fairings, spoilers, and flight controls, were developed during the 1960s for their weight savings over aluminum parts. New generation large aircraft are designed with all-composite fuselage and wing structures and the repair of these advanced composite materials requires an in-depth knowledge of composite structures, materials, and tooling. The...
Topics: Hardness, Impact Test, Tension Test & Composite Material
Five collapsible, elastomer-coated fabric products were exposed to four middle distillate fuels and to a middle distillate fuel simulant. The coated fabrics were represented by a drum material, a pillow tank fabric and its seam section, and a berm liner with its seam section. Each of these samples was treated as individual materials. Compatibility of these products was studied under accelerated conditions, during which each elastomer was submerged in each fuel for 14 days at 80 C. The effects...
Topics: DTIC Archive, Fodor, George E, SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS...
This project was performed in support of a (DARPA) program to calibrate a Soviet nuclear test site be generating spherical waves in granite obtained from a borehole drilled adjacent to the site of the JVE. Objectives were to determine effects of pore condition and effective stress on spherical wave propagation and attenuation and to investigate coupling and attenuation properties in different low porosity 'hard' rocks to find a suitable analog to the JVE rock and determine if attenuation is...
Topics: DTIC Archive, Miller, S A, SRI INTERNATIONAL MENLO PARK CA, *STRESSES, USSR, LABORATORY TESTS,...
Five experimental, low impurity content aluminum alloys were evaluated for characteristics such as tensile properties, fracture toughness, resistance to corrosion and stress corrosion, temperature stability and quench sensitivity. Although none of the alloys achieved the target strength-toughness criteria, two compositions were superior to conventional alloys in this respect. These were nominally Al-5 Zn-2.4 Mg-1.2 Cu-.15 Cr (MA07) and Al-5.9 Zn-2.4 Cu-2. 2 Mg-.3 Mn (MA08). One...
Topics: DTIC Archive, Rogers, Jr, Ralph W, ALUMINUM CO OF AMERICA ALCOA CENTER PA ALCOA LABS, *ALUMINUM...
This research was performed in conjunction with funding by DURALCAN- USA through a Cooperative Research and Development Agreement (CRDA). The program seeks to improve the ductility of cast and extruded Al 6061-Al203 metal matrix composite (MMC) materials. Annealing stages were designed to be introduced into combined extrusion and drawing operations during the processing of the MMCs. This work has included a comprehensive analysis of a composite's microstructure as related to processing strains...
Topics: DTIC Archive, Longenecker, Fredric W, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *MICROSTRUCTURE,...
The magneto-mechanical behaviour of five steels, mild steel, HSLA 80, HY 80, HY 100 and a quenched alloy steel, has been investigated. Magnetic fields of the order of the Earth's field and compressive stresses up to 200 MPa were applied to the steels. The increase in magnetization due to stress cycling in a constant applied field and to field cycling at constant stress was measured. The results show that the differential permeability of the steel largely determines the magnetization increase...
Topics: DTIC Archive, Robertson, I M, MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA), *STRESSES, *MAGNETIC...
Four aluminum alloys, designed for use at elevated temperatures, supersaturated with iron, chromium and other elements: Ti, V, Zr, were studied. The starting materials were alloy powders made by the RSR (Rapid Solidification Rate) centrifugal atomization process (approx. one million (deg C/sec)) developed by Pratt and Whitney Aircraft and extrusion bars were made from four powders. The as extruded microstructure and the microstructure of the annealed alloys at 482 C (900 F) were investigated by...
Topics: DTIC Archive, Shechtman,Dan, TECHNION - ISRAEL INST OF TECH HAIFA DEPT OF MATERIALS ENGINEERING,...
An assessment has been made of the primary dislocation slip systems in the explosive pentaerythritol tetranitrate (PETN) and cyclotrimethylene trinitramine (RDX) using a combination of dislocation etching and microhardness indentation techniques. Hardness measurements were made on all major habit faces as a function of temperature and load. These showed that, within the attainable temperature range (PETN 292-353, RDX 293-373K) no change in hardness occurred which could be associated with the...
Topics: DTIC Archive, Sherwood,J N, UNIVERSITY OF STRATHCLYDE GLASGOW (SCOTLAND) DEPT OF PURE AND APPLIED...
97
97
Nov 8, 2014
11/14
by
Pankaj Oudhia
movies
eye 97
favorite 0
comment 0
Indian states Chhattisgarh and Odisha are rich in Biodiversity. Pankaj Oudhia is documenting Traditional Medicinal Knowledge about herbs and insects since year 1990. This series is an effort to present Herbal Wealth of these states through movies. There are over 15000 movies in this series. Related Links Encyclopedia of Tribal Medicines by Pankaj Oudhia https://archive.org/details/EncyclopediaOfTribalMedicinesByPankajOudhia Compilation of Pankaj Oudhia’s Research and Documentation work on...
Topics: Ethnobotany, Traditional Biological Knowledge, Tribal Medicines, Folk Remedies, Medicinal Plants of...
The increased use and research on direct composite restorations materials are mainly attributed to the demand for esthetic and excellent strength restorations. Early composites that were used for restoration process tend to had unfavorable properties, such as weak and having bad interaction with teeth interface. Combination of metakaolin-zirconia-apatite can yield a very good composite for teeth restoration application. It produces high hardness and good interaction with the teeth. The Vickers...
Topics: Restoration, Teeth, Nanocomposite, Hardness, Shrinkage
Studies were conducted on the fabricability of Pyrrone systems by room-temperature isostatic and conventional compression molding techniques. The capability of the Pyrrones to be compression molded at elevated temperatures by dead-cure procedures (molding of fully cyclized polymer) was demonstrated and this fabrication method was emphasized. Correlations of conditions required to successfully mold Pyrrone pellets to various density and hardness values were developed. Molded Pyrrones were found...
Topics: DTIC Archive, Bradbury, E. J., BATTELLE MEMORIAL INST COLUMBUS OH, *POLYMERS, *ISOSTATIC PRESSING,...
Traditional piezoelectric materials have much higher impedances than water, and so most hydrophones are hard compared to the surrounding water medium. This hardness is the cause of internal and external reflections which manifest themselves as resonance and diffraction factor effects, respectively. Even nonvoided polyvinylidene fluoride (PVDF), a piezoelectic polymer, has a characteristic acoustic impedance (pc) about 2.5 times that of water. With the advent of voided PVDF, however, it is...
Topics: DTIC Archive, NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT, *PIEZOELECTRIC MATERIALS, ACOUSTIC...
The magnetic behaviour of the glass-covered metallic microwires with a wide compositional range of composition with soft and bard magnetic character is presented. The effect of conventional furnace and dc current annealing under dc axial magnetic field or without it as well as of a chemical etching on the magnetic properties of Co and Fe-based glass coated microwires has been studied. Such treatments modify the magnetic parameters. In particular, annealing under applied magnetic field (field...
Topics: DTIC Archive, Zhukov, A. P., Gonzalez, J., Zhukova, V., Blanco, J. M., DONOSTIA INTERNATIONAL...
The following is a laboratory experiment designed to further a student's understanding of materials science. The student performing this experiment should have a knowledge of binary phase diagrams. The objectives of this experiment are as follows: (1) to give the student a hands-on approach to changing materials properties through heat treatment of a specimen; (2) to quantify the amount of strengthening obtained in the specimen; and (3) to encourage the student to speculate about the structural...
Topics: NASA Technical Reports Server (NTRS), ANNEALING, EXPERIMENT DESIGN, HARDNESS, PHASE DIAGRAMS,...
The adhesive bond between ceramic cement and a titanium matrix composite substrate to be used in the National Aerospace Plane program is evaluated. Two commercially available adhesion testers, the Sebastian Adherence Tester and the CSEM REVETEST Scratch Tester, are evaluated to determine their suitability for quantitatively measuring adhesion strength. Various thicknesses of cements are applied to several substrates, and bond strengths are determined with both testers. The Sabastian Adherence...
Topics: NASA Technical Reports Server (NTRS), ADHESION, ADHESION TESTS, ADHESIVE BONDING, ADHESIVES,...
Aerogels are extremely low density solids that are characterized by a high porosity and pore sizes on the order of nanometers. Their low thermal conductivity and sometimes transparent appearance make them desirable for applications such as insulation in cryogenic vessels and between double paned glass in solar architecture. An understanding of the mechanical properties of aerogels is necessary before aerogels can be used in load bearing applications. In the present study, the mechanical...
Topics: NASA Technical Reports Server (NTRS), AEROGELS, COMPRESSIVE STRENGTH, FIBER COMPOSITES, FRACTURING,...
