YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASCE
    • Journal of Nanomechanics and Micromechanics
    • View Item
    •   YE&T Library
    • ASCE
    • Journal of Nanomechanics and Micromechanics
    • View Item
    • All Fields
    • Source Title
    • Year
    • Publisher
    • Title
    • Subject
    • Author
    • DOI
    • ISBN
    Advanced Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Archive

    Mechanics of Metal-Nanocomposites at Multiple Length Scales: Case of Al-BNNT

    Source: Journal of Nanomechanics and Micromechanics:;2017:;Volume ( 007 ):;issue: 004
    Author:
    N. M. Anoop Krishnan
    ,
    Debraj Ghosh
    DOI: 10.1061/(ASCE)NM.2153-5477.0000129
    Abstract: Metal-nanocomposites are drawing attention of the composites community due to improvements in stiffness, strength, crack-bridging ability, and resistance to creep and fracture. The analysis of nanocomposites involves studies at multiple length scales due to the small length of the reinforcement. This paper conducts a detailed study on the mechanical behavior of a metal nanocomposite (Al-BNNT)—made of an aluminum (Al) matrix reinforced with boron nitride nanotubes (BNNTs)—under compressive and shear loadings. First a representative volume element (RVE) is modeled and analyzed using molecular dynamics (MD) simulation. Then the elastic properties are derived for a specially orthotropic lamina using a hierarchical multiscale scheme in conjunction. This result is further extended to derive elastic and shear moduli of bulk nanocomposites with aligned and randomly oriented reinforcement. The result shows excellent agreement with previous experimental observations. The bounds of elastic moduli using Voigt and Reuss formulations diverge with an increase in volume fraction of reinforcement—unlike typical composites, in which these two bounds first diverge and then eventually converge. This anomaly is attributed to the weakness of nanotubes in the radial direction. However, most elastic properties are found to be improved by the reinforcement, especially by double-walled nanotubes. Depending on the type of loading, nanocomposite exhibits failure at the matrix, interface, or nanotubes. This reveals the importance of considering all three loading cases when modeling a nanocomposite.
    • Download: (688.1Kb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Mechanics of Metal-Nanocomposites at Multiple Length Scales: Case of Al-BNNT

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4237482
    Collections
    • Journal of Nanomechanics and Micromechanics

    Show full item record

    contributor authorN. M. Anoop Krishnan
    contributor authorDebraj Ghosh
    date accessioned2017-12-16T09:01:08Z
    date available2017-12-16T09:01:08Z
    date issued2017
    identifier other%28ASCE%29NM.2153-5477.0000129.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4237482
    description abstractMetal-nanocomposites are drawing attention of the composites community due to improvements in stiffness, strength, crack-bridging ability, and resistance to creep and fracture. The analysis of nanocomposites involves studies at multiple length scales due to the small length of the reinforcement. This paper conducts a detailed study on the mechanical behavior of a metal nanocomposite (Al-BNNT)—made of an aluminum (Al) matrix reinforced with boron nitride nanotubes (BNNTs)—under compressive and shear loadings. First a representative volume element (RVE) is modeled and analyzed using molecular dynamics (MD) simulation. Then the elastic properties are derived for a specially orthotropic lamina using a hierarchical multiscale scheme in conjunction. This result is further extended to derive elastic and shear moduli of bulk nanocomposites with aligned and randomly oriented reinforcement. The result shows excellent agreement with previous experimental observations. The bounds of elastic moduli using Voigt and Reuss formulations diverge with an increase in volume fraction of reinforcement—unlike typical composites, in which these two bounds first diverge and then eventually converge. This anomaly is attributed to the weakness of nanotubes in the radial direction. However, most elastic properties are found to be improved by the reinforcement, especially by double-walled nanotubes. Depending on the type of loading, nanocomposite exhibits failure at the matrix, interface, or nanotubes. This reveals the importance of considering all three loading cases when modeling a nanocomposite.
    titleMechanics of Metal-Nanocomposites at Multiple Length Scales: Case of Al-BNNT
    typeJournal Paper
    journal volume7
    journal issue4
    journal titleJournal of Nanomechanics and Micromechanics
    identifier doi10.1061/(ASCE)NM.2153-5477.0000129
    treeJournal of Nanomechanics and Micromechanics:;2017:;Volume ( 007 ):;issue: 004
    contenttypeFulltext
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian
     
    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian