Role of Disorder in the Size Scaling of Material Strength

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2008
Major/Subject
Mcode
Degree programme
Language
en
Pages
055502/1-4
Series
Physical Review Letters, Volume 100, Issue 5
Abstract
We study the sample-size dependence of the strength of disordered materials with a flaw, by numerical simulations of lattice models for fracture. We find a crossover between a regime controlled by the disorder and another controlled by stress concentrations, ruled by continuum fracture mechanics. The results are formulated in terms of a scaling law involving a statistical fracture process zone. Its existence and scaling properties are revealed only by sampling over many configurations of the disorder. The scaling law is in good agreement with experimental results obtained from notched paper samples.
Description
Keywords
disordered materials, strength, fractures
Other note
Citation
Alava, Mikko J. & Nukala, Phani K. V. V. & Zapperi, Stefano. 2008. Role of Disorder in the Size Scaling of Material Strength. Physical Review Letters. Volume 100, Issue 5. 055502/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.100.055502.