Phys. Rev. B 61, 14968–14974 (2000)Origin of mist and hackle patterns in brittle fractureReceived 8 April 1999; revised 29 November 1999; published in the issue dated 1 June 2000 A velocity growth rule for secondary cracks in brittle materials is suggested. This rule agrees with the assumption that the mist-hackle transition originates from the inability of the primary crack to overtake secondary cracks. The geometrical shapes of the secondary cracks in the mist and hackle zones change gradually with distance from the fracture origin. The velocity rule is used to calculate these shapes across the mist and at the beginning of the hackle zone. These calculations are shown to be in agreement with experimental results. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.61.14968
DOI:
10.1103/PhysRevB.61.14968
PACS:
62.20.Mk
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