YaBeSH Engineering and Technology Library

    • Journals
    • PaperQuest
    • YSE Standards
    • YaBeSH
    • Login
    View Item 
    •   YE&T Library
    • ASME
    • Journal of Engineering Materials and Technology
    • View Item
    •   YE&T Library
    • ASME
    • Journal of Engineering Materials and Technology
    • 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

    Scaling of Quasi-Brittle Fracture and the Fractal Question

    Source: Journal of Engineering Materials and Technology:;1995:;volume( 117 ):;issue: 004::page 361
    Author:
    Zdeněk P. Bažant
    DOI: 10.1115/1.2804726
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The paper represents an extended text of a lecture presenting a review of recent results on scaling of failure in structures made of quasibrittle materials, characterized by a large fracture process zone, and examining the question of possible role of the fractal nature of crack surfaces in the scaling. The problem of scaling is approached through dimensional analysis, the laws of thermodynamics and asymptotic matching. Large-size and small-size asymptotic expansions of the size effect on the nominal strength of structures are given, for specimens with large notches (or traction-free cracks) as well as zero notches, and simple size effect formulas matching the required asymptotic properties are reported. The asymptotic analysis is carried out, in general, for fractal cracks, and the practically important case ofnonfractal crack propagation is acquired as a special case. Regarding the fractal nature of crack surfaces in quasibrittle materials, the conclusion is that it cannot play a signification role in fracture propagation and the observed size effect. The reason why Weibull statistical theory of random material strength does not explain the size effect in quasibrittle failures is explained. Finally, some recent applications to fracture simulation by particle models (discrete element method) and to the determination of size effect and fracture characteristics of carbon-epoxy composite laminates are briefly reviewed.
    keyword(s): Brittleness , Fracture (Process) , Fractals , Size effect , Failure , Formulas , Crack propagation , Discrete element methods , Traction , Simulation , Strength (Materials) , Epoxy adhesives , Laws of thermodynamics , Carbon , Composite materials , Particulate matter , Dimensional analysis AND Laminates ,
    • Download: (919.9Kb)
    • Show Full MetaData Hide Full MetaData
    • Get RIS
    • Item Order
    • Go To Publisher
    • Price: 5000 Rial
    • Statistics

      Scaling of Quasi-Brittle Fracture and the Fractal Question

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/115365
    Collections
    • Journal of Engineering Materials and Technology

    Show full item record

    contributor authorZdeněk P. Bažant
    date accessioned2017-05-08T23:47:18Z
    date available2017-05-08T23:47:18Z
    date copyrightOctober, 1995
    date issued1995
    identifier issn0094-4289
    identifier otherJEMTA8-26974#361_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/115365
    description abstractThe paper represents an extended text of a lecture presenting a review of recent results on scaling of failure in structures made of quasibrittle materials, characterized by a large fracture process zone, and examining the question of possible role of the fractal nature of crack surfaces in the scaling. The problem of scaling is approached through dimensional analysis, the laws of thermodynamics and asymptotic matching. Large-size and small-size asymptotic expansions of the size effect on the nominal strength of structures are given, for specimens with large notches (or traction-free cracks) as well as zero notches, and simple size effect formulas matching the required asymptotic properties are reported. The asymptotic analysis is carried out, in general, for fractal cracks, and the practically important case ofnonfractal crack propagation is acquired as a special case. Regarding the fractal nature of crack surfaces in quasibrittle materials, the conclusion is that it cannot play a signification role in fracture propagation and the observed size effect. The reason why Weibull statistical theory of random material strength does not explain the size effect in quasibrittle failures is explained. Finally, some recent applications to fracture simulation by particle models (discrete element method) and to the determination of size effect and fracture characteristics of carbon-epoxy composite laminates are briefly reviewed.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleScaling of Quasi-Brittle Fracture and the Fractal Question
    typeJournal Paper
    journal volume117
    journal issue4
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.2804726
    journal fristpage361
    journal lastpage367
    identifier eissn1528-8889
    keywordsBrittleness
    keywordsFracture (Process)
    keywordsFractals
    keywordsSize effect
    keywordsFailure
    keywordsFormulas
    keywordsCrack propagation
    keywordsDiscrete element methods
    keywordsTraction
    keywordsSimulation
    keywordsStrength (Materials)
    keywordsEpoxy adhesives
    keywordsLaws of thermodynamics
    keywordsCarbon
    keywordsComposite materials
    keywordsParticulate matter
    keywordsDimensional analysis AND Laminates
    treeJournal of Engineering Materials and Technology:;1995:;volume( 117 ):;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