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Thursday, May 14, 2020 | History

3 edition of Thermally-driven microfracture in high temperature metal matrix composites found in the catalog.

Thermally-driven microfracture in high temperature metal matrix composites

Thermally-driven microfracture in high temperature metal matrix composites

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  • 13 Currently reading

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

    Subjects:
  • Metallic composites.

  • Edition Notes

    Other titlesThermally driven microfracture in high ....
    StatementSubodh K. Mital and Christos C. Chamis.
    SeriesNASA technical memorandum -- 105305.
    ContributionsChamis, C. C., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18052806M

      We developed a nanocomposite with highly aligned graphite platelets in a copper matrix. Spark plasma sintering ensured an excellent copper–graphite interface for transmitting heat and stress. The resulting composite has superior thermal conductivity ( W m–1 K–1, % of copper), which is in excellent agreement with modeling based on the effective medium by:   Polymer cold-drawing 1,2,3,4 is a process in which tensile stress reduces the diameter of a drawn fibre (or thickness of a drawn film) and orients Cited by:

      Discussing the design and optimum use of thermal analysis instrumentation for materials' property measurement, this work details how the instruments work, what they measure, potential pitfalls and the fitting of experimental results to theoretical by: This research is focused on the influence of processing temperature on titanium matrix composites reinforced through Ti, Al, and B4C reactions. In order to investigate the effect of Ti-Al based intermetallic compounds on the properties of the composites, aluminum powder was incorporated into the starting materials. In this way, in situ TixAly were expected to form as well as TiB and by: 6.

    Digimat-FE to simulate thermal conductivity performances of composite materials. A more in-depth analysis of the behavior of a composite can be performed in Digimat-FE. In this tool, thermal properties and percolation can be investigated. For instance, the effect of the amount of inclusions on the percolation can be studied in a fast and easy way. The high TC and high damping can be achieved with metal- graphite composites. The authors used as matrix metal copper, aluminium, iron and tungsten. Selected properties of these systems are described in the following paragraphs. Experimental The metal powders are carbonyl iron (diameter.


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Thermally-driven microfracture in high temperature metal matrix composites Download PDF EPUB FB2

The reference state. Hence, it can be concluded for both unidirectional and crossply composites, that thermally driven microfracture propagation is quite insensitive to temperature increases up to °C ( °F) from the reference (room) temperature.

In the next set of simulations, the composites were cooled down from °C ( °F) to. Get this from a library. Thermally-driven microfracture in high temperature metal matrix composites.

[Subodh K Mital; C C Chamis; United States. National Aeronautics and Space Administration.]. Microfracture (fiber/matrix fracture, interphase debonding and interply delamination) in high temperature metal matrix composites (HTMMC), subjected to thermal loading, is computationally simulated.

Both unidirectional and crossply SiC/Ti15 composites are evaluated for microfracture driven by thermal loads, using multicell finite element models. Microfracture (fiber/matrix fracture, interphase debonding and interply delamination) in high temperature metal matrix composites (HTMMC), subjected to thermal loading, is computationally simulated.

Both unidirectional and crossply SiC/Ti15 composites are evaluated for microfracture driven by thermal loads, using multicell finite element : Christos C. Chamis and Subodh K. Mital. Microfracture (fiber/matrix fracture, interphase debonding and inter-ply delam-ination) in high temperature metal matrix composites (HTMMC), subjected to both mech-o anical and thermal loading, is computationally simulated.

A crossply fiber volume ratio SiC/TiI5 composite with 0/90/0 lay-up is evaluated for microfracture. using a multicell. S.K. Mital and C.C. Chamis, Thermally-driven Microfracture in High Temperature Metal Matrix Composites, Proc.

Syrup. on the Mechanics of Composites at Elevated and Cryogenic Temperatures, ASME Applied Mechanics Division Meeting, Columbus, Ohio, June ().Author: S.K. Mital, P.L.N. Murthy, C.C. Chamis. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

The design of a high-temperature, high-work radial turbine for advanced small gas turbine engines is described. This turbine is designed to produce nearly Btu/lb gas flow at % efficiency. Composites Science and Technology 50 () MICRO-FRACTURE IN HIGH-TEMPERATURE METAL-MATRIX LAMINATES Subodh K.

Mital~t University of Toledo, Toledo, OhioUSA Christos C. Chamis* & Pascal K. Gotsis M.S. NASA Lewis Research Center, Cleveland, OhioUSA (Received 18 February ; revised version received 26 July ; accepted 4 February ) Cited by: 9. The possibility of designing composites with the necessary balance of high-temperature strength, fracture toughness, and oxidation resistance (heat resistance), in particular, composites operated at temperatures of –°C is demonstrated by the example of a molybdenum oxide by: 4.

Metal matrix composites (MMCs) are composed of a metal matrix and a reinforcement, which confers excellent thermally conductive and mechanical performance. High thermal conductivity MMCs have special Cited by: 5. Book. TOC. Actions. Share. High Temperature Ceramic Matrix Composites Tensile Creep Behavior of In‐Situ Single Crystal Oxide Ceramics Eutectic Composites in Ultra‐High Temperature, High Pressure and Moisture Rich Environments (Pages: ) A Multiscale New Chart Method for Properly Assessing the Performance of Ceramic Matrix.

Metal matrix composites offer the potential for improved specific properties as well as increased elevated temperature performance relative to their unreinforced alloys.

These are critical attributes for many aeroengine applications, making composites attractive despite their higher by: Metal matrix composites with high specific stiff-ness and strength could be used in applications in which saving weight is an important factor.

In-cluded in this category are robots, high-speed ma-chinery, and high-speed rotating shafts for ships or land vehicles. Good wear resistance, along with high specific strength, also favors MMC use.

(). Metal Matrix Composites for Thermal Management: A Review. Critical Reviews in Solid State and Materials Sciences: Vol. 41, No. 2, pp. Cited by: Creep of Metal Matrix Composites. In book: Comprehensive Composite Materials, pp microfracture in high-temperature metal matrix crossply laminates.

The problem of fracture toughness of metal matrix composites is analyzed. The possibility of designing composites with the necessary balance of high-temperature strength, fracture toughness, and oxidation resistance (heat resistance), in particular, composites operated at temperatures of °C is demonstrated by the example of a.

Al-based metal matrix composites (MMCs) belong to a technologically attractive class of materials with low density, high specific strength and high wear Cited by: Keywords: Thermal properties, Aluminum metal matrix composites and Ceramic particles.

Introduction 1Composite materials do play a great significance and an effective role in many engineering industries applications because of the physical properties File Size: 1MB. Metal Matrix Composites: Mechanisms and Properties includes sections on strengthening mechanisms, mechanical properties, fracture and fatigue, physical properties, and environmental effects.**Its companion volume, Metal Matrix Composites: Processing and Interfaces contains an introductory chapter that places the current state of the composites field in historical perspective.

polymer-matrix composites with the CaCO 3 mineral filler is studied. The proper ratio of glass-fibers and mineral filler is important for obtaining good mechanical, and at the same time good thermal properties of the composites used in production of high-quality components in electro Size: KB.This book contains technical papers, presented at the Sixth Japan-U.S.

Conference on Composite Materials held in Orlando inon various topics, including stress analysis, interfaces and material systems, micromechanics, structural analysis, design and optimization, and strength analysis.thermal interface materials with the hybrid graphene-metal particle fillers.

The thermal conductivity of resulting composites was increased by ~% in a temperature range from K to K at a small graphene loading fraction of 5-vol.-%. The unusually strong enhancement of thermal properties was attributed to the high intrinsic thermal.