Mixed-mode I+II fracture characterization of human cortical bone using the Single Leg Bending test

Mixed-mode I+II fracture characterization of human cortical bone was analyzed in this work. A miniaturized version of the Single Leg Bending test (SLB) was used owing to its simplicity. A power law criterion was verified to accurately describe the material fracture envelop under mixed-mode I+II load...

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Bibliographic Details
Published in:Journal of the mechanical behavior of biomedical materials 2016-02, Vol.54, p.72-81
Main Authors: Silva, F.G.A., de Moura, M.F.S.F., Dourado, N., Xavier, J., Pereira, F.A.M., Morais, J.J.L., Dias, M.I.R.
Format: Article
Language:English
Subjects:
Adult
Algorithms
Bend tests
Biomechanical Phenomena
Biomedical materials
Bones
Cohesion
Digital imaging
Finite Element Analysis
Fracture characterization
Fracture mechanics
Fractures, Bone - physiopathology
Human
Human cortical bone
Humans
Leg - physiopathology
Male
Mechanical Phenomena
Mixed-mode I+II
Models, Biological
Single Leg Bending test
Surgical implants
Tibia - injuries
Young Adult
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Summary:Mixed-mode I+II fracture characterization of human cortical bone was analyzed in this work. A miniaturized version of the Single Leg Bending test (SLB) was used owing to its simplicity. A power law criterion was verified to accurately describe the material fracture envelop under mixed-mode I+II loading. The crack tip opening displacements measured by digital image correlation were used in a direct method to determine the cohesive law mimicking fracture behavior of cortical bone. Cohesive zone modeling was used for the sake of validation. Several fracture quantities were compared with the experimental results and the good agreement observed proves the appropriateness of the proposed procedure for fracture characterization of human bone under mixed-mode I+II loading.
ISSN:1751-6161
1878-0180
DOI:10.1016/j.jmbbm.2015.09.004