Browse Topic: Fluoride

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Compatibility of Seven Biologically Derivable Diesel Blendstocks (1-Octanol, 2-Nonanone, Hexyl Hexanoate, n-Undecane, Di-isobutylene, Biodiesel and Renewable Diesel) with Fuel System Plastics2022-01-058303/29/2022
The compatibility of seven bioderivable diesel blendstocks with 21 plastic materials common to fuel storage, dispensing, and delivery systems was evaluated though volume and hardness measurements. The blendstocks included one alcohol (1-octanol), one acid ester (hexyl hexanoate), one ketone (2-nonanone), dibutoxymethane, and three akanes (n-undecane, biodiesel, and renewable diesel). Each blendstock was blended with diesel in concentrations of 0, 10, 20, and 30 wt %. The plastics included resins, nylons, acetals, high density polyethylene, polypropylene, polyetheretherketone, polyphthalamides polyphenylene sulfide, polyethylene terephthalate, polytetrafluoroethylene, ethylene-tetrafluoroethylene, polyvinylidene fluoride, polyetherimide, polyphthalamides, Polyacrylamide, and polybutylene terephthalate. Specimens of each plastic material were immersed in the test fuels for a period of 16 weeks and measured for volume and hardness. Afterward, they were dried at 60 °C for 65 h and
Kass, Michael, Janke, Chris, Nafziger, Eric
FITTING, ELBOW 90°, BULKHEAD, EXTERNAL SWAGE TO FLARELESS, HYDRAULICAS6484 (Current)05/11/2021
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, PORT PLUG AND BLEEDERAS5169C (Historical)02/01/2021
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
TEE, STANDARD REDUCER, EXTERNAL SWAGE ON RUN, MALE FLARELESS ON SIDE, HYDRAULICAS6470 (Current)11/12/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Fluoride Materials for Extra-Thin Computer ChipsTBMG-3782710/01/2020
Smaller and more compact is the direction in which computer chips are moving. Two-dimensional (2D) materials are considered to have great potential since they are as thin as a material can possibly be — in extreme cases, they consist of only one single layer of atoms. This makes it possible to produce novel electronic components with tiny dimensions, high speed, and optimal efficiency.
FITTING, TEE, SWIVEL NUT TO MALE FLARELESS ON RUN, EXTERNAL SWAGE ON SIDEAS6494 (Current)12/26/2019
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Ultrathin Transistors for Faster Computer ChipsTBMG-3528310/01/2019
For decades, microchip transistors have become smaller, faster, and cheaper; however, miniaturization has reached a natural limit, as completely new problems arise when a length scale of only a few nanometers is approached.
Insulation Sleeving, Electrical, Heat Shrinkable, Polyvinylidene Fluoride, Semi-Rigid, CrosslinkedAMSDTL23053/8B (Current)12/05/2018
No Scope Available.
AE-8D Wire and Cable Committee
UV-Absorption Measurements by Spontaneous Raman Scattering in Low-Sooting Diesel-Like Jets2018-01-504210/11/2018
UV-absorption measurements are sparse in diesel(-like) combustion, particularly close to the premixed burn. Thus, such measurements are conducted in diesel-like jets in a high-pressure vessel in this work, using 1D spontaneous Raman scattering (SRS) from N2. Stokes (~263 nm) and anti-Stokes (~235 nm) SRS induced by a krypton fluoride excimer (KrF*) laser (~248 nm) is exploited. Anti-Stokes SRS can be directly used for attenuation correction of laser-induced fluorescence (LIF) from NO at ~236 nm. Results show the importance of attenuation correction, although the jets are largely non-sooting. To identify absorbers, effects of SRS wavelength, measurement time in the injection event, location in the flame, jet width (JW), temperature, CO concentration, and injection pressure are considered. Particularly strong attenuation observed around the time of second-stage ignition appears to be primarily caused by combustion intermediates such as partially oxidized fuel. In the quasi-steady period
Schulz, Christian, Raffius, Thomas, Ottenwälder, Tamara, Grünefeld, Gerd, Pischinger, Stefan, Koß, Hans-Jürgen
FITTING ASSEMBLY, TEE, EXTERNAL SWAGE ON RUN, FEMALE FLARELESS ON BRANCH, HYDRAULICAS6489 (Current)09/19/2018
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, 45° ELBOW, EXTERNAL SWAGE TO FEMALE FLARELESS, HYDRAULICAS6468 (Current)09/17/2018
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Magnesium Alloy, Processes for Pretreatment and Prevention of Corrosion onAMSM3171 (Historical)02/25/2018
This specification covers general requirements for the apparatus, material, and procedures to be used in the processing of magnesium base alloys for the purpose of increasing their corrosion resistance and by producing surfaces suitable for organic paint finish systems.
AMS B Finishes Processes and Fluids Committee
Electroactive Material for Wound HealingTBMG-2785211/01/2017
NASA Langley Research Center’s Technology Gateway Hampton, VA
Sulfuric Acid Anodizing of Aluminum and Aluminum AlloysAMS03_25A (Current)10/04/2017
This SAE Standard specifies the properties of sulphuric acid anodizing of aluminum and aluminum alloys.
AMS B Finishes Processes and Fluids Committee
Magnesium Alloys, Anodic Treatment ofAMSM45202B (Current)09/20/2017
This specification covers the requirements for equipment, materials and procedures to be used in anodic treatments for magnesium base alloys for the purpose of increasing their corrosion resistance or producing surfaces suitable for the application of a protective organic finish.
AMS B Finishes Processes and Fluids Committee
Structural Health Monitoring System/Method Using Electroactive Polymer FibersTBMG-2731208/01/2017
NASA's Langley Research Center has developed a novel polymer material that can be utilized as a real-time structural health monitoring sensor. The material is electroactive and generates a signal in response to a mechanical force. The material is also highly elastic, which allows for a large range of measurable strain levels, and is highly durable.
Studies on Carbon Fiber Reinforced Aluminum Based Composites2017-28-198407/10/2017
Importance of fibers as reinforcements in metal matrices has long been recognized. It is only because of this realization that many industries like aerospace and to some extent the automobile industry relies entirely on advanced composite materials for their conflicting demands of high performance and lightweight materials. However most of the work in these areas has been limited or confined to patents created by the defense and automotive sectors. The efforts to commercialize these materials have been restricted due to high cost of the reinforcements and the manufacturing processes used. In this work an attempt has been made to infiltrate the Carbon fibers by imparting Nickel and Salt based coatings to fiber surfaces with commercial purity aluminum and A356 alloy. Infiltration has been performed in ambient atmosphere and also under vacuum. The carbon fibers have been successfully infiltrated with K2ZrF6 salt coatings and were hot pressed to required shapes. The alloy was age-hardened
Hussain, Naveed
Marking of Plastic PartsJ1344_201703 (Current)03/28/2017
This SAE Recommended Practice provides a system for marking plastic parts to designate the type of material from which the part was fabricated.
Plastics Committee
FITTING ASSEMBLY, TEE, FEMALE FLARELESS TO EXTERNAL SWAGE ON RUN, EXTERNAL SWAGE ON BRANCH, HYDRAULICAS6471 (Current)03/14/2017
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW, 90°, EXTERNAL SWAGE TO FLARELESS, HYDRAULICAS6473 (Current)10/27/2016
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Extension of Analytical Methods for Detailed Characterization of Advanced Combustion Engine Emissions2016-01-233010/17/2016
Advanced combustion strategies used to improve efficiency, emissions, and performance in internal combustion engines (IC) alter the chemical composition of engine-out emissions. The characterization of exhaust chemistry from advanced IC engines requires an analytical system capable of measuring a wide range of compounds. For many years, the widely accepted Coordinating Research Council (CRC) Auto/Oil procedure[1,2] has been used to quantify hydrocarbon compounds between C1 and C12 from dilute engine exhaust in Tedlar polyvinyl fluoride (PVF) bags. Hydrocarbons greater than C12+ present the greatest challenge for identification in diesel exhaust. Above C12, PVF bags risk losing the higher molecular weight compounds due to adsorption to the walls of the bag or by condensation of the heavier compounds. This paper describes two specialized exhaust gas sampling and analytical systems capable of analyzing the mid-range (C10 - C24) and the high range (C24+) hydrocarbon in exhaust. An
Fanick, E. Robert, Kroll, Svitlana, Favela, Kristin
INSULATION SLEEVING, ELECTRICAL, HEAT SHRINKABLE, MODIFIED FLUOROPOLYMER, CROSSLINKEDAS23053/18 (Current)10/17/2016
AE-8D Wire and Cable Committee
Device and Method for Healing WoundsTBMG-2497107/01/2016
This technology is a device that uses electrical activity to facilitate the wound healing process while protecting the wound. The bandage is made of an electroactive material (see figure) that is stimulated by the heat of the body and the pressure of cell growth, thus no external power source is required.
Compatibility of Dimethyl Ether (DME) and Diesel Blends with Fuel System Polymers: A Hansen Solubility Analysis Approach2016-01-083504/05/2016
The compatibility of notable infrastructure elastomers and plastics with DME and its blends with diesel fuel were examined using solubility analysis. The elastomer materials were fluorocarbon, acrylonitrile butadiene rubber (NBR), styrene butadiene (SBR), neoprene, polyurethane and silicone. Plastic materials included polyphenylene sulfide (PPS), polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyoxymethylene (POM), polybutylene terephthalate (PBT), polypropylene (PP), high density polyethylene (HDPE), along with several nylon grades and thermosetting resins. These materials have been rigorously studied with other fuel types, and their volume change results were found to correspond well with their predicted solubility levels. A Hansen solubility analysis was performed for each material with DME, diesel, and blends of both fuel components. The results for the elastomers indicate that DME and its blends with diesel fuel will offer
Kass, Michael D., Daw, Charles
SPLICE, ELECTRIC, PERMANENT, CRIMP STYLE, NICKEL-COATED COPPER, INSULATED, ENVIRONMENT RESISTANT, CLASS 1, 175 °C, HEATLESS SEALINGAS81824/14B (Current)01/08/2016
AE-8C2 Terminating Devices and Tooling Committee
Graphene Coating Could Aid ChemotherapyTBMG-2331211/01/2015
Norwegian University of Science and Technology, Trondheim, Norway
NASA PS400 High-Temperature Solid Lubricant CoatingTBMG-2285409/01/2015
NASA has an ongoing need for high-temperature solid lubricant coatings to reduce friction and wear in turbine engines, rocket engines, and other mechanical systems. Such lubricants must be thermally and chemically stable in air, vacuum, and reducing environments like hydrogen. Traditional lubricants like oil, grease, and PTFE (Polytetrafluoroethylene), and even more exotic solid lubricants like graphite and molybdenum disulphide, lack such capabilities. The key problem is to identify and formulate a material that possesses good mechanical properties, long-term environmental durability, and acceptable friction and wear-reducing characteristics while being practical to apply to bearings, seals, and other mechanical components.
Compliant Electrode and Composite Materials for Piezoelectric Wind and Mechanical Energy ConversionTBMG-2285609/01/2015
Thin film, piezoelectric materials generate a small voltage whenever they are deformed, suggesting that they are suitable for tapping energy from freely available resources, such as the wind. Yet their low-energy production levels and lack of electrode durability have hampered development. NASA researchers have invented a system, method, and device for improving the performance and increasing the lifespan of small-form-factor, thin-film electrode, piezoelectric devices capable of interacting with the wind to provide power to wearable devices and stretchable electronics.
Lithium Fluoride as a Polysulfide Shuttle Inhibitor for Lithium Sulfur ChemistryTBMG-2219906/01/2015
Lyndon B. Johnson Space Center, Houston, Texas
Sulfuric Acid Anodizing of Aluminum and Aluminum AlloysAMS03_25 (Historical)05/21/2015
This SAE Standard specifies the properties of sulphuric acid anodizing of aluminum and aluminum alloys.
AMS B Finishes Processes and Fluids Committee
FITTING, BUSHING, PORT, REDUCERAS5173C (Historical)04/22/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
WASHER, FLAT, BEAM SEAL FITTINGAS5018 (Current)04/21/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW, 90°, BEAM SEAL, BULKHEAD, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4226 (Current)04/20/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW, 90°, BEAM SEAL, EXTERNAL THREAD, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4225 (Current)04/20/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ADAPTER, BEAM SEAL, SWIVEL NUT, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4234 (Current)04/20/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW, 45°, BEAM SEAL, EXTERNAL THREAD, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4218 (Current)04/17/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW, 45°, BEAM SEAL, BULKHEAD, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4219 (Current)04/17/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ADAPTER, BEAM SEAL, BULKHEAD, EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4217 (Current)04/17/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ADAPTER, BEAM SEAL, EXTERNAL THREAD EXTERNAL SWAGE TUBE END, HYDRAULIC, 3000 PSIAS4215 (Current)04/17/2015
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Compatibility Assessment of Plastic Infrastructure Materials with Off-Highway Diesel and a Diesel Blend Containing 20 Percent Fast Pyrolysis Bio-Oil2015-01-089304/14/2015
The compatibility of plastic materials used in fuel storage and dispensing applications was determined for an off-highway diesel fuel and a blend containing 20% bio-oil (Bio20) derived from a fast pyrolysis process. Bio20 is not to be confused with B20, which is a diesel blend containing 20% biodiesel. The feedstock, processing, and chemistry of biodiesel are markedly different from bio-oil. Plastic materials included those identified for use as seals, coatings, piping and fiberglass resins, but many are also used in vehicle fueling systems. The plastic specimens were exposed to the two fuel types for 16 weeks at 60°C. After measuring the wetted volume and hardness, the specimens were dried for 65 hours at 60°C and then remeasured to determine extent of property change. A solubility analysis was performed to better understand the performance of plastic materials in fuel blends composed of bio-oil and diesel. All of the plastic materials evaluated in this study exhibited higher
Kass, Michael D., Janke, Chris, Connatser, Raynella, Lewis, Sam, Keiser, James, Theiss, Timothy
SPLICE, ELECTRIC, PERMANENT, CRIMP STYLE, NICKEL-COATED COPPER, INSULATED, ENVIRONMENT RESISTANT, CLASS 1, 175 °C, HEATLESS SEALINGAS81824/14A (Historical)08/20/2014
AE-8C2 Terminating Devices and Tooling Committee
SPLICE, ELECTRIC, PERMANENT, CRIMP STYLE, NICKEL-COATED COPPER, INSULATED, ENVIRONMENT RESISTANT, CLASS 1, 175 °C, HEATLESS SEALINGAS81824/14 (Historical)04/03/2014
AE-8C2 Terminating Devices and Tooling Committee
Membrane Shell Reflector Segment AntennaTBMG-1526512/01/2012
The mesh reflector is the only type of large, in-space deployable antenna that has successfully flown in space. However, state-of-the-art large deployable mesh antenna systems are RF-frequency-limited by both global shape accuracy and local surface quality. The limitations of mesh reflectors stem from two factors. First, at higher frequencies, the porosity and surface roughness of the mesh results in loss and scattering of the signal. Second, the mesh material does not have any bending stiffness and thus cannot be formed into true parabolic (or other desired) shapes.
Insulation Sleeving, Electrical, Heat Shrinkable, Polyvinylidene Fluoride, Semi-Rigid, CrosslinkedAMSDTL23053/8A (Historical)10/11/2012
AE-8D Wire and Cable Committee
Insulation Sleeving, Electrical, Heat Shrinkable, Modified Fluoropolymer, CrosslinkedAMSDTL23053/18A (Historical)09/05/2012
AE-8D Wire and Cable Committee
New ‘Spintronic’ LED Technology Promises Brighter TV and Computer DisplaysTBMG-1480809/01/2012
Physicists at the University of Utah have invented a new “spintronic” organic light-emitting diode (OLED) that promises to be brighter, cheaper and more environmentally friendly than the kinds of LEDs now used in television and computer displays, lighting, traffic lights and numerous electronic devices.
Magnesium Alloys, Anodic Treatment ofAMSM45202A (Historical)11/21/2011
This specification covers the requirements for equipment, materials and procedures to be used in anodic treatments for magnesium base alloys for the purpose of increasing their corrosion resistance or producing surfaces suitable for the application of a protective organic finish.
AMS B Finishes Processes and Fluids Committee
Room-Temperature Sub-Diffraction-Limited Plasmon LaserTBMG-1078108/01/2011
Lasers present the means to deliver powerful, coherent, and directional high-frequency electromagnetic energy. However, the diffraction limit of light imposes fundamental constraints on how compact such photonic devices can be and their potential for integration with electronic circuits, which are orders of magnitude smaller.
Tubing, Plastic, Flexible, Convoluted, Annular Polyvinylidene Fluoride (PVDF), Thermally Stabilized, Standard ConvolutionAS81914/8 (Historical)01/04/2011
Scope unavailable.
AE-8C1 Connectors Committee
High-Temperature Solid Lubricant CoatingTBMG-830408/01/2010
NASA PS400 is a solid lubricant coating invented for high-temperature tribological applications. This plasma-sprayed coating is a variant of the previously patented PS304 coating, and has been formulated to provide higher density, smoother surface finish, and better dimensional stability.
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