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Wednesday, July 22, 2020 | History

3 edition of Optical properties of sputtered aluminum on graphite/epoxy composite material found in the catalog.

Optical properties of sputtered aluminum on graphite/epoxy composite material

Optical properties of sputtered aluminum on graphite/epoxy composite material

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Published by National Aeronautics and Space Administration, Langley Research Center in Hampton, Va .
Written in English

    Subjects:
  • Sputtering (Physics),
  • Aluminum.

  • Edition Notes

    StatementWilliam G. Witte, Jr., Louis A. Teichman.
    SeriesNASA technical memorandum -- 101620.
    ContributionsTeichman, Louis A., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15278774M

    EVALUATION OF ANISOTROPIC PROPERTIES OF GRAPHITE-EPOXY COMPOSITES USING LAMB WAVES INTRODUCTION W. R. Rase, S. 1. Rokhlin, and L. Adler The Ohio State University Department of Welding Engineering Columbus, Ohio The obvious advantage of composite materials is in their high strength and stiffness to weight ratios. Optical Engineering Ebooks Advanced Search > Home > Proceedings > Volume

    Unidirectional graphite/epoxy was characterized at various strain rates ranging from quasi-static to over s −ties were obtained by testing thin rings cm (4 in.) in diameter, cm (1 in.) wide, and 6 to 8 plies thick under internal by: more [1]. Generally composite materials have very high specific strength and specific modulus. The strength of graphite epoxy may be the same, but its specific strength is thrice as that of steel. This translates into reduced material and energy costs. Though the material cost is times that of steel, manufacturing techniques suchFile Size: KB.

    properties, easier and lower-cost production, were used to improve the thermal conductivity of an epoxy. By adding 12 wt% GNPs or wt% silicon carbide microparticles (micro-SiCs) to epoxy, the thermal conductivity reached maxima that were respectively and times that of the epoxy alone. the feasibility of using polymer composite coatings to reduce the coefficient of friction and wear rate. The study explores the friction and wear properties of epoxy and its composite films coated on steel substrates under dry and base oil lubricated conditions. The inclusion of 10 wt. % of graphene and graphite are carried out to.


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Optical properties of sputtered aluminum on graphite/epoxy composite material Download PDF EPUB FB2

Get this from a library. Optical properties of sputtered aluminum on graphite/epoxy composite material. [William G Witte; Louis A Teichman; Langley Research Center.]. Consider the notched T/ graphite/epoxy composite laminate plate shown in Figure (a). Three such laminates were constructed and tested by Bogert et al.

(): [0° 12], [45°/0°/−45°/0°/90°] s, and [45°/0° 2 /−45°/0° 2 /90°] s, with total thicknesses of, and in., respectively, and each with nominal v f = The progressive failure of these. tions. The use of graphite/epoxy parts reduced the satellite's weight by 25 lb. [Ref.

2) Figure 5. Defense Satellite Communications System III There are many other examples from past current and future space projects which call for graphite/ epoxy composite structures.

Future planned com­ posite use include: by: 1. REVIEW OF THERMAL PROPERTIES OF GRAPHITE COMPOSITE MATERIALS D. Kourtides Thermal Protection Materials Branch Ames Research Center Moffett Field, CA ABSTRACT * Flammability, thermal, and selected mechanical properties of composites fabricated with epoxy and other thermally stable resin matrices areFile Size: 1MB.

Fig. 4 shows the WAXD patterns Optical properties of sputtered aluminum on graphite/epoxy composite material book pure graphite platelets and the composites. Both pure graphite platelets and the graphite platelet/epoxy composites exhibit an intense peak at a 2θ value of °, corresponding to a basal spacing of Å.

This basal spacing is exactly the same as that observed for pure crystalline confirms that the graphite platelets, ∼ nm in Cited by: This paper will briefly describe two graphite/epoxy structures and the critical performance parameters and properties related to each of them. The programmes are (1) Applications Technology Satellite (ATS) Reflector Support Truss, and (2) Side Brace for the A37B Aircraft Main Landing by: 4.

there are a lot of possibilities to create a composite material p.e. based on an epoxy matrix resin and carbon materials with different degree of graphitization (p.e. graphenes, carbon nanutubes. The properties of a unidirectional graphite epoxy composite with a fiber volume of 60 percentage are given below.

The matrix is simple epoxy with its properties also given. Estimate the modulus in the 1 direction for the same composite with a reduced fiber volume fraction of 55 percentage. ture absorption and the mechanical properties of different graphite-epoxy composites.

INTRODUCTION ONE OF THE questions in practical applications of composite materials is the degradation of the material due to exposure to a moist environment. Moisture absorbed by the material may have undesirable effects resulting in a reduction in.

Lubrication with sputtered MoS₂ films [microform]: principles, operation, limitations / T. Spalvins Ion beam treatment of potential space materials at the NASA Lewis Research Center [microform] / Michael. About Goodfellow.

Goodfellow supplies metals, ceramics and other materials to meet the research, development and specialist production requirements of science and industry worldwide.

Source: Goodfellow. For more information on this source please visit Goodfellow. material were varied in a systematic manner to facilitate the exploration of intrinsic material structure on the engineering properties of the composite.

To determine these properties, experimental tests were performed that included dynamic nanoindentation, Dynamical Mechanical Analysis (DMA), and. These materials combine the strength, hardness and wear resistance of carbon with the corrosion resistance and self lubricating properties of graphite.

They can be impregnated with various materials to enhance its properties and used in applications where traditional lubrication is ition: blank. This paper presents results of experiments in which the thermal expansion and swelling behaviour of an epoxy resin system and two graphite/epoxy composite systems exposed to water were measured.

It was found that the cured epoxy resin swells by an amount slightly less than the volume of the absorbed water and that the swelling efficiency of the water varies with the moisture content of the Cited by: The coatings were sputtered from an aluminum target onto 1-inch-diameter substrates of T/ graphite/epoxy composite material with two different surface textures.

The mechanical properties of the nanocomposites were significantly enhanced by the addition of GO. About 50% of increment in the flexural strength of the composite sample filled with wt% of GO as compared to the neat epoxy sample.

However, only slight improvement in the impact strength of the composite were obtained by adding wt% of GO. Netherland developed conductive composite bipolar plates using compression molding, injection molding, two-component injection molding, dan preform molding to make big size bipolar plates [16].

The current work investigated the effect of graphite-epoxy composition to the properties of composite. Effect of Alumina-Graphite Filler Blending on Tensile Behavior of Glass Fiber Reinforced Epoxy Composites 74 compounds with the chemical formula Al2O3. It is an amphoteric oxide and is commonly referred to as alumina, corundum as well as many other names, reflecting its widespread occurrence in nature and : Puneeth, Subramanian, Tridib, Chidambaram, Haseebuddin.

The objective of this experiment is to measure the effects of exposure to the Shuttle launch and near-Earth space environments on the optical properties of ion-beam-textured high-absorptance solar thermal control surfaces, the optical and electrical properties of ion-beam-sputtered conductive solar thermal control surfaces, and the weight loss.

Thermal behavior of polyester composite with graphene oxide/graphite was investigated using DMA, TGA and SEM. The influence of graphene oxide/graphite on mechanical and thermal properties of polyester composites were studied in case of small contents.

The study allowed to conclude that graphene oxide and graphite have a different effect onFile Size: KB. Glass fibre reinforced epoxy composites using plain weave fabric and 3D non-crimp fabric are fabricated in four different (40, 45, 50 and 55%) fibre weight fractions and their mechanical properties such as flexural strength, tensile strength, impact strength, inter laminar shear strength (ILSS) are evaluated and compared.

Hand lay-up method is followed to fabricate the composite panels.The epoxy based graphite composite has been prepared with various additives.

The possibility for bipolar plate material at PEMFC was investigated by electrical and thermal properties. Density of bipolar plate with graphite composite was decreased from to as 80 w/o of graphite content were changed to 50 w/o of graphite content and 30 w Cited by: 1.properties, together with a direct cost reduction due to the lower consumption of resin material (Suresha et al.

). In this study the properties of composites consisting of epoxy resin reinforced with graphite platelets and of hybrids consisting on graphite/epoxy resin reinforced with carbon fiber are investigated and compared regarding.