University Library
  • Login
A gateway to Melbourne's research publications
Minerva Access is the University's Institutional Repository. It aims to collect, preserve, and showcase the intellectual output of staff and students of the University of Melbourne for a global audience.
View Item 
  • Minerva Access
  • Science
  • School of Mathematics and Statistics
  • School of Mathematics and Statistics - Research Publications
  • View Item
  • Minerva Access
  • Science
  • School of Mathematics and Statistics
  • School of Mathematics and Statistics - Research Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

    Early prediction of macrocrack location in concrete, rocks and other granular composite materials

    Thumbnail
    Download
    Published version (3.499Mb)

    Citations
    Altmetric
    Author
    Tordesillas, A; Kahagalage, S; Ras, C; Nitka, M; Tejchman, J
    Date
    2020-11-20
    Source Title
    Scientific Reports
    Publisher
    NATURE RESEARCH
    University of Melbourne Author/s
    Tordesillas, Antoinette
    Affiliation
    School of Mathematics and Statistics
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Tordesillas, A., Kahagalage, S., Ras, C., Nitka, M. & Tejchman, J. (2020). Early prediction of macrocrack location in concrete, rocks and other granular composite materials. SCIENTIFIC REPORTS, 10 (1), https://doi.org/10.1038/s41598-020-76616-y.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/253049
    DOI
    10.1038/s41598-020-76616-y
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7679422
    Abstract
    Heterogeneous quasibrittle composites like concrete, ceramics and rocks comprise grains held together by bonds. The question on whether or not the path of the crack that leads to failure can be predicted from known microstructural features, viz. bond connectivity, size, fracture surface energy and strength, remains open. Many fracture criteria exist. The most widely used are based on a postulated stress and/or energy extremal. Since force and energy share common transmission paths, their flow bottleneck may be the precursory failure mechanism to reconcile these optimality criteria in one unified framework. We explore this in the framework of network flow theory, using microstructural data from 3D discrete element models of concrete under uniaxial tension. We find the force and energy bottlenecks emerge in the same path and provide an early and accurate prediction of the ultimate macrocrack path [Formula: see text]. Relative to all feasible crack paths, the Griffith's fracture surface energy and the Francfort-Marigo energy functional are minimum in [Formula: see text]; likewise for the critical strain energy density if bonds are uniformly sized. Redundancies in transmission paths govern prefailure dynamics, and predispose [Formula: see text] to cascading failure during which the concomitant energy release rate and normal (Rankine) stress become maximum along [Formula: see text].

    Export Reference in RIS Format     

    Endnote

    • Click on "Export Reference in RIS Format" and choose "open with... Endnote".

    Refworks

    • Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References


    Collections
    • Minerva Elements Records [45770]
    • School of Mathematics and Statistics - Research Publications [680]
    Minerva AccessDepositing Your Work (for University of Melbourne Staff and Students)NewsFAQs

    BrowseCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    My AccountLoginRegister
    StatisticsMost Popular ItemsStatistics by CountryMost Popular Authors