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    Modeling of Creep Behavior of a Rotating Disc in the Presence of Both Composition and Thermal Gradients

    Source: Journal of Engineering Materials and Technology:;2005:;volume( 127 ):;issue: 001::page 97
    Author:
    V. K. Gupta
    ,
    S. B. Singh
    ,
    H. N. Chandrawat
    ,
    S. Ray
    DOI: 10.1115/1.1839187
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The creep behavior of a rotating disc made of isotropic composite containing varying amounts of silicon carbide in the radial direction has been investigated in the presence of a thermal gradient, also in the radial direction. The variation of silicon carbide content has been so tailored as to contain larger amounts of particles in a highly stressed region. This type of inhomogeneous material is known as Functionally Graded Material (FGM). The thermal gradient experienced by the disc is the result of braking action as estimated by FEM analysis. The creep behavior of the disc under stresses developing due to rotation has been determined following Sherby’s law and compared with that of a similar disc following Norton’s law. The difference in the distribution of stresses and strain rates in the discs does not follow any definite trend but the values are somewhat different. The presence of thermal gradient and a linear particle gradient separately or their simultaneous presence result in a significant decrease in steady state creep rates as compared to that in a composite disc with the same average particle content (20 vol %) distributed uniformly and operating under isothermal condition. Further, the study revealed that the creep behavior of a FGM disc could be significantly improved by increasing the gradient of particle distribution while keeping the same average particle content of 20 vol % silicon carbide in the disc.
    keyword(s): Creep , Composite materials , Particulate matter , Stress , Disks , Functionally graded materials , Rotating Disks , Temperature gradients AND Gradients ,
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      Modeling of Creep Behavior of a Rotating Disc in the Presence of Both Composition and Thermal Gradients

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    http://yetl.yabesh.ir/yetl1/handle/yetl/131894
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    contributor authorV. K. Gupta
    contributor authorS. B. Singh
    contributor authorH. N. Chandrawat
    contributor authorS. Ray
    date accessioned2017-05-09T00:16:19Z
    date available2017-05-09T00:16:19Z
    date copyrightJanuary, 2005
    date issued2005
    identifier issn0094-4289
    identifier otherJEMTA8-27065#97_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/131894
    description abstractThe creep behavior of a rotating disc made of isotropic composite containing varying amounts of silicon carbide in the radial direction has been investigated in the presence of a thermal gradient, also in the radial direction. The variation of silicon carbide content has been so tailored as to contain larger amounts of particles in a highly stressed region. This type of inhomogeneous material is known as Functionally Graded Material (FGM). The thermal gradient experienced by the disc is the result of braking action as estimated by FEM analysis. The creep behavior of the disc under stresses developing due to rotation has been determined following Sherby’s law and compared with that of a similar disc following Norton’s law. The difference in the distribution of stresses and strain rates in the discs does not follow any definite trend but the values are somewhat different. The presence of thermal gradient and a linear particle gradient separately or their simultaneous presence result in a significant decrease in steady state creep rates as compared to that in a composite disc with the same average particle content (20 vol %) distributed uniformly and operating under isothermal condition. Further, the study revealed that the creep behavior of a FGM disc could be significantly improved by increasing the gradient of particle distribution while keeping the same average particle content of 20 vol % silicon carbide in the disc.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleModeling of Creep Behavior of a Rotating Disc in the Presence of Both Composition and Thermal Gradients
    typeJournal Paper
    journal volume127
    journal issue1
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.1839187
    journal fristpage97
    journal lastpage105
    identifier eissn1528-8889
    keywordsCreep
    keywordsComposite materials
    keywordsParticulate matter
    keywordsStress
    keywordsDisks
    keywordsFunctionally graded materials
    keywordsRotating Disks
    keywordsTemperature gradients AND Gradients
    treeJournal of Engineering Materials and Technology:;2005:;volume( 127 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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