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    Crack Propagation in a Nonlinearly Viscoelastic Solid With Relevance to Adhesive Bond Failure

    Source: Journal of Applied Mechanics:;1993:;volume( 060 ):;issue: 004::page 793
    Author:
    W. G. Knauss
    ,
    G. U. Losi
    DOI: 10.1115/1.2900985
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The problem of crack propagation through a material possessing nonlinearly viscoelastic material response is considered, including the influence of stress-induced free-volume changes on the rheology, as well as the formation of voids as material failure is approached. This particular material response is confined to a thin layer along the crack propagation axis, while the bulk of the material behaves in a linearly viscoelastic manner, thus simulating the situation arising in the growth of a crazeled crack, or the failure of a bonded joint with a thin adhesive layer strained uniformly across its thickness. The nonlinear material behavior thus governs simultaneously the stress and strain distribution at the crack tip as well as the crack speed solely in dependence on the applied load (stress intensity factor). Only quasi-static motion is considered, the velocities being understood to be “reduced” by temperature according to a time-temperature superposition principle. Comparisons with a model based on linearly viscoelastic considerations and rate-insensitive properties of the damaged material are presented.
    keyword(s): Adhesives , Crack propagation , Failure , Stress , Fracture (Materials) , Temperature , Thickness , Rheology , Motion AND Viscoelastic materials ,
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      Crack Propagation in a Nonlinearly Viscoelastic Solid With Relevance to Adhesive Bond Failure

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/111318
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    contributor authorW. G. Knauss
    contributor authorG. U. Losi
    date accessioned2017-05-08T23:40:20Z
    date available2017-05-08T23:40:20Z
    date copyrightDecember, 1993
    date issued1993
    identifier issn0021-8936
    identifier otherJAMCAV-26352#793_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/111318
    description abstractThe problem of crack propagation through a material possessing nonlinearly viscoelastic material response is considered, including the influence of stress-induced free-volume changes on the rheology, as well as the formation of voids as material failure is approached. This particular material response is confined to a thin layer along the crack propagation axis, while the bulk of the material behaves in a linearly viscoelastic manner, thus simulating the situation arising in the growth of a crazeled crack, or the failure of a bonded joint with a thin adhesive layer strained uniformly across its thickness. The nonlinear material behavior thus governs simultaneously the stress and strain distribution at the crack tip as well as the crack speed solely in dependence on the applied load (stress intensity factor). Only quasi-static motion is considered, the velocities being understood to be “reduced” by temperature according to a time-temperature superposition principle. Comparisons with a model based on linearly viscoelastic considerations and rate-insensitive properties of the damaged material are presented.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCrack Propagation in a Nonlinearly Viscoelastic Solid With Relevance to Adhesive Bond Failure
    typeJournal Paper
    journal volume60
    journal issue4
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.2900985
    journal fristpage793
    journal lastpage801
    identifier eissn1528-9036
    keywordsAdhesives
    keywordsCrack propagation
    keywordsFailure
    keywordsStress
    keywordsFracture (Materials)
    keywordsTemperature
    keywordsThickness
    keywordsRheology
    keywordsMotion AND Viscoelastic materials
    treeJournal of Applied Mechanics:;1993:;volume( 060 ):;issue: 004
    contenttypeFulltext
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