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Friday, November 13, 2020 | History

3 edition of A heater made from graphite composite material for potential deicing application found in the catalog.

A heater made from graphite composite material for potential deicing application

Ching-Cheh Hung

A heater made from graphite composite material for potential deicing application

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  • 30 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, D.C.], [Springfield, Va .
Written in English

    Subjects:
  • Airplanes -- Ice prevention.

  • Edition Notes

    StatementChing-Cheh Hung and Michael E Dillehay and Mark Stahl.
    SeriesNASA technical memorandum -- 88888.
    ContributionsDillehay, Michael E., Stahl, Mark., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicrofiche
    Pagination1 v.
    ID Numbers
    Open LibraryOL14662231M

    Dr. Michael Dillehay, MD is a board certified family physician in Lake Mary, Florida. He is affiliated with Central Florida Regional Hospital and AdventHealth tion: Medical Director/Vitas Healthcare. 1 day ago  A novel composite phase change material (CPCM), capric–myristic acid/expanded graphite (CA–MA/EG) CPCM, was prepared by absorbing liquid CA–MA (as the phase change material (PCM)) into EG (as the substrate material) for heat storage in the backfill materials of soil-source heat pump systems. The thermal characteristics and microstructure of the novel CPCM were analyzed using .


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A heater made from graphite composite material for potential deicing application by Ching-Cheh Hung Download PDF EPUB FB2

A HEATER MADE FROl4,GRAPHITE COMPOSITE MATERIAL FOR POTENTIAL DEICING APPLICATION Ching-cheh Hung National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio and Michael E.

Dillehay and Mark Stahl Cleveland State University Cleveland, Ohio SUMMARY A surface heater was developed using a graphite fiber-epoxy composite File Size: KB. The interlaminar interface of a carbon fiber polymer-matrix composite as a resistance heating element Composites Part A: Applied Science and Manufacturing, Vol.

34, No. 10 Composite materials for electrical applicationsCited by: Get this from a library. A heater made from graphite composite material for potential deicing application. [Ching-cheh Hung; Michael E Dillehay; Mark Stahl; United States.

National Aeronautics and Space Administration.]. A surface heater was developed using a graphite fiber-epoxy composite as the heating element. This heater can be thin, highly electrically and thermally conductive, and can conform to an irregular surface.

Therefore it may be used in an aircraft's thermal deicing system to quickly and uniformly heat the aircraft surface. heaters in automobile defogging/deicing systems, heatable smart windows, graphene electrodes potential applications to the fabrication of very high resolution, high throughput nanopore-based single-molecule detectors; antibacterial activity of graphene, graphite oxide, graphene oxide and a promising material for the application to Cited by: The high heating rate means that the graphene film/paper is suitable for de-icing because, in general, electrical heating materials for de-icing are required to reach a high temperature in a short time period.

For all curves of Fig. 8a and b, a linear trend is observed in the initial part. The range of linearity is dependent on the heat flux by: In this study, a thermal de-icing/anti-icing system for aircraft surfaces was designed using flexible graphene film/paper.

It was placed between two Carbon Fiber Reinforced Plastic (CFRP) laminates. Advanced composite material for aerospace application-A Review reinforced in matrix of graphite, often with silicon carbide coating to prevent oxidation.

It was developed for the nose cone and leading edges of the space shuttle and for the nose cone of intercontinental ballistic Size: KB. 1. Melting Point. Due to the material’s surprising melting point, graphite is frequently used to make crucibles, products that are molded, and specialty plates (or wall liners) for high temperature furnaces and fireproofing systems; rooms, lockers, safes, etc.

Flexible graphite is a flexible sheet made by compressing a collection of exfoliated graphite flakes (called worms) without a binder. During exfoliation, an intercalated graphite (graphite compound with foreign species called the intercalate between some of the graphite layers) flake expands typically by over times along the c by: Aircraft brake manufacturers are meeting the challenge of reducing the weight of the braking system by using carbon/carbon (C/C) composite materials which serve as the friction material, heat sink.

and structural components. composite made of tungsten and 70 vol.% graphite the value of the CTE at 50 °C is ppm/ K perpendicular to the pressing direction and ppm/ K parallel to the pressing direction (figure 5 a). A material that should work as heat dissipating part of a component will undergo many cycles of heating up to service temperature and cooling down.

1B - Graphite Elements c maximum temperature, for use in UHV, high vacuum or inert atmosphere (Not suitable for use in O2 above c). Raw material available in large blocks, so mainly used for tubular elements, or where flat element requires a cvd coating such as SiC, PBN or PG.

BASIC GASKET APPLICATION GUIDE & MATERIAL SELECTION Application / Function Because gaskets are generally low cost and appear to be simple, the criticality of their role in a device is often overlooked. They usually don’t garner much attention until there is a problem with an application or if there are high maintenance cost to service the Size: KB.

> Carbon nanotube based composites film heater for de-icing ap Carbon nanotube based composites film heater for de-icing application.

Research output: Contribution the laminate structure showed a stable reversibility after a number of heating cycles, which indicated it’s potential for thermal interface materials, sensors and de-icing Cited by: 4.

compared to other composite materials or metals, especially in the thermal expansion properties. Carbon -Carbon (C-C) composites can absorb heat without deformation because of its low coefficient of the thermal expansion in the fiber direction (mm) and (mm) in the.

Introduction to polymer matrix composites We only discuss polymermatrix compositesin this book. Polymer matrix composite material is the one that uses organicpolymeras ma-trix and fiber as reinforcement.

Strength and modulus of fiber are much higher desirable to the application and developmentof materials. de-icing and anti-icing, lightning strike protection, erosion resistance and other functionality, e.g. actuators for morphing and fully integrated conformal sensors •If used today, these functions require separate add-on systems, but they can be more efficiently engineered with multifunctional composite materials and surfaces tomorrow.

Graphite fiber-reinforced composite materials have been evaluated for use in aircraft structural components, primarily as a means of reducing the weight of selected metal parts.

Control surfaces, fairings, internal structures, and landing gear have Author: S. Cross. The most recent studies on the applications of nanostructured carbon materials, including carbon nanotubes, carbon nanofibers, and graphene oxides, in constructions are presented. First, the preparation of nanostructured carbon/infrastructure material composites is summarized.

This part is mainly focused on how the nanostructured carbon materials were mixed with cementitious or asphalt Cited by: Graphene's high optical transparency coupled with its high electrical conductivity make it an ideal material for PV electrodes since it allows the maximum solar energy to reach the active material while offering minimal resistance of the charge collector to the take off of the generated current.

De-icing Using Bleed Heat There is a lot of waste heat generated while the aircraft is flying. This is primarily the heat expelled from the engines. In this new alternative to prevent icing, it is suggested that this heat be bleed or routed back to the critical zones using Pyrolytic graphite sheets.

This heat. Using graphene’s conductive properties and thinking outside the box, SAAB filed a patent application in February detailing a de-icing process with graphene at its core.

Nanoplatelets of graphene are mixed into a polymer resin, with the resin applied to the aircraft body and. Technology demonstrated by researchers at the National Composites Centre in Bristol promises to make it easier to dismantle, repair and recycle composite parts.

Developed in collaboration with a team from Oxford Brookes University, the technology – which involves the use of carefully modified structural adhesives – enables composite structures to be separated (or disbonded) quickly and.

Carbon nanotube heaters recently gained more attention due to their efficiency and relative ease of fabrication. In this chapter, we report on the design and fabrication of low-voltage carbon nanotube (CNT) heaters and their potential applications.

CNT sheets drawn from CNT arrays have been used to make the heaters. The sheet resistance of the CNT sheet is dependent on the number of layers Cited by: 3. It's time for an update on graphene, that super material of the future.

Scientists have come up with some new ways of making it that are easier. Origins of Composites. The rapid development and use of composite materials beginning in the s had three main driving forces.

Military vehicles, such as airplanes, helicopters, and rockets, placed a premium on high-strength, light-weight materials. Several ice protection strategies have been developed to overcome the icing hazards in the aerospace industry. The electro-thermal method is one of the popular approaches to prevent ice accretion a.

A heating element converts electrical energy into heat through the process of Joule heating. Electric current through the element encounters resistance, resulting in heating of the element.

Unlike the Peltier effect, this process is independent of the direction of current. Electrothermal De-Icing. preventing failure or non-operable zones. Even after damage, heater functionality is preserved. Built-in redundancy provides greater fault/FOD/fatigue tolerance and higher reliability.

use and application; State-of-the-art technologies provide comprehensive solutions in ice detection, system control and heating. High-Thermal Conductivity Graphite and Composites. WIDELY COMPATIBLE, SUPERIOR HEAT CONDUCTIVITY. Based on a complete line of high-conductivity thermal pyrolytic graphite (TPG) material, Momentive high-thermal conductivity graphite and composites are an excellent choice in electronic assembly applications.

The results show that the conductive EPDM rubber composite material has good temperature durability, outstanding mechanical stability, and excellent heat production capacity. The feasibility of the material for road active deicing and snow melting is verified. It is a kind of electric heating deicing material with broad application : Shuanye Han, Haibin Wei, Leilei Han, Qinglin Li.

Having just returned from a Thanksgiving holiday where ice has been a major problem already this winter, a discussion on deicing materials seems appropriate. Ice on sidewalks and roadways makes for a hazardous combination to people and property.

Removal of compacted snow and ice with shovels or snow blowers isn't always easy or effective. The use of a chemical deicer may be needed to. The Gr/Cu composite is also of interest as a model composite system. The graphite and copper components do not react with one another to form a compound.

They are also mutually insoluble. As a result the only bond between the fiber and the matrix is a mechanical bond. Abstract. Fibre reinforced polymer composite materials can pose a serious health hazard in fire. Smouldering or flaming composites can produce copious amounts of dense smoke consisting of a potentially toxic mix of combustion gases, soot particles and fibres.

There are numerous methods for fabricating composite components. Some methods have been borrowed (injection molding from the plastic industry, for example), but many were developed to meet specific design or manufacturing challenges faced with fiber-reinforced polymers.

Selection of a method for a particular part, therefore, will depend on the materials, the part design and end-use or application. I f the 20th century was the age of plastics, the 21st century seems set to become the age of graphene —a recently discovered material made from honeycomb sheets of carbon just one atom thick.

Science journals have been running out of superlatives for this wondrous stuff: it's just about the lightest, strongest, thinnest, best heat- and electricity- conducting material ever discovered.

All of the above-mentioned properties of carbon fiber reinforced polymers make this material a potential candidate for automobile, aerospace, infrastructure and marine applications. Figure 1: Carbon composite materials are lighter and stronger than traditional materials Author: Mehdi Yari.

EFFECTS OF EXTREME LOW TEMPERATURE ON COMPOSITE MATERIALS A Thesis Submitted to the Graduate Faculty of the University of New Orleans in partial fulfillment of the requirements for the degree of Masters of Science in The Department of Mechanical Engineering by Sridevi KichhannagariJawaharlal Nehru Technological University, India, De-icing is the process of removing snow, ice or frost from a surface.

Anti-icing is understood to be the application of chemicals that not only de-ice but also remain on a surface and continue to delay the reformation of ice for a certain period of time, or prevent adhesion of ice to make mechanical removal easier. Trains and rail switches.

Carbon fibers or carbon fibres (alternatively CF, graphite fiber or graphite fibre) are fibers about 5–10 micrometres in diameter and composed mostly of carbon atoms. Carbon fibers have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion.Graphene-Info is proud to present The Graphene Handbook.

This book is a comprehensive guide to graphene technology, industry and ne is the world's strongest and most conductive 2D material that is set to revolutionize entire industries.It is a sandwich material with inside layers made from flexible graphite and core with low density carbon foam.

Carbon foam allows lower thermal conductivity at temperature above 1,°C. Outside layers allow high resistance to chemical reaction and low particle emission. 2D Grades Standard 2D composite grades, long fibre, structural. Thin.