Avalanche criticality during compression of porcine cortical bone of different ages

Jordi Baró, Peter Shyu, Siyuan Pang, Iwona M. Jasiuk, Eduard Vives, Ekhard K.H. Salje, Antoni Planes

Research output: Contribution to journalArticlepeer-review


Crack events developed during uniaxial compression of cortical bones cut from femurs of developing pigs of several ages (4, 12, and 20 weeks) generate avalanches. These avalanches have been investigated by acoustic emission analysis techniques. The avalanche energies are power-law distributed over more than four decades. Such behavior indicates the absence of characteristic scales and suggests avalanche criticality. The statistical distributions of energies and waiting times depend on the pig age and indicate that bones become stronger, but less ductile, with increasing age. Crack propagation is equally age-dependent. Older pigs show, on average, larger cracks with a time distribution similar to those of aftershocks in earthquakes, while younger pigs show only statistically independent failure events.

Original languageEnglish (US)
Article number053001
JournalPhysical Review E
Issue number5
StatePublished - May 2 2016

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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