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- W3100981230 abstract "A heterogeneous brittle material characterized by a random field of local toughness Kc(x) can be represented by an equivalent homogeneous medium of toughness, Keff. Homogenization refers to a process of estimating Keff from the local field Kc(x). An approach based on a perturbative expansion of the stress intensity factor along a rough crack front shows the occurrence of different regimes depending on the correlation length of the local toughness field in the direction of crack propagation. A `weak pinning regime takes place for long correlation lengths, where the effective toughness is the average of the local toughness. For shorter correlation lengths, a transition to strong pinning occurs leading to a much higher effective toughness, and characterized by a propagation regime consisting in jumps between pinning configurations." @default.
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- W3100981230 date "2003-09-01" @default.
- W3100981230 modified "2023-10-10" @default.
- W3100981230 title "Effective toughness of heterogeneous brittle materials" @default.
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- W3100981230 doi "https://doi.org/10.1016/s0997-7538(03)00078-0" @default.
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