Avalanche criticality during compression of porcine cortical bone of different ages.
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Authors
Baró, Jordi
Shyu, Peter
Pang, Siyuan
Jasiuk, Iwona M
Vives, Eduard
Planes, Antoni
Publication Date
2016-05Journal Title
Physical Review E: Statistical, Nonlinear, and Soft Matter Physics
ISSN
1539-3755
Publisher
American Physical Society
Volume
93
Issue
5
Pages
053001-053001
Language
English
Type
Article
Metadata
Show full item recordCitation
Baró, J., Shyu, P., Pang, S., Jasiuk, I. M., Vives, E., Salje, E., & Planes, A. (2016). Avalanche criticality during compression of porcine cortical bone of different ages.. Physical Review E: Statistical, Nonlinear, and Soft Matter Physics, 93 (5), 053001-053001. https://doi.org/10.1103/PhysRevE.93.053001
Abstract
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.
Sponsorship
The group from Barcelona acknowledges financial support
from CICyT (Spain), Projects No. MAT2013-40590-P and
No. MAT2015-69777-REDT. E.K.H.S. is grateful to EPSRC
for support under Grant No. EP/K009702/1. I.J. gratefully
acknowledges support from the National Science Foundation
(NSF) the DMR Program Grant No. 15-07169.
Funder references
EPSRC (EP/K009702/1)
Identifiers
External DOI: https://doi.org/10.1103/PhysRevE.93.053001
This record's URL: https://www.repository.cam.ac.uk/handle/1810/255818
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