Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry.

Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Research Abstract Details 

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Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Abstract Text:

R Shahar,P Zaslansky,M Barak,A A Friesem,J D Currey,S Weiner,

Young's modulus and Poisson's ratios of 6mm-sized cubes of equine cortical bone were measured in compression using a micro-mechanical loading device. Surface displacements were determined by electronic speckle pattern-correlation interferometry. This method allows for non-destructive testing of very small samples in water. Analyses of standard materials showed that the method is accurate and precise for determining both Young's modulus and Poisson's ratio. Material properties were determined concurrently in three orthogonal anatomic directions (axial, radial and transverse). Young's modulus values were found to be anisotropic and consistent with values of equine cortical bone reported in the literature. Poisson's ratios were also found to be anisotropic, but lower than those previously reported. Poisson's ratios for the radial-transverse and transverse-radial directions were 0.15+/-0.02, for the axial-transverse and axial-radial directions 0.19+/-0.04, and for the transverse-axial and radial-axial direction 0.09+/-0.02 (mean+/-SD). Cubes located only millimetres apart had significantly different elastic properties, showing that significant spatial variation occurs in equine cortical bone.

Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Publishing Authors By Initials

R Shahar,P Zaslansky,M Barak,AA Friesem,JD Currey,S Weiner,

For similar investigative techniques: epidemiologic methods: statistics as topic: statistical distributions: poisson distribution research abstracts see: investigative techniques: epidemiologic methods: statistics as topic: statistical distributions: poisson distribution research

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Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of biomechanics

VOLUME: 40

Page Numbers: 252-64

Journal Abbreviation:

ISSN: 0021-9290

DAY: 24

MONTH: 03

YEAR: 2006

Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Information

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LANGUAGE: eng

NlmUniqueID: 157375

Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry. Keywords Mesh Terms:

KEYWORDS: Poisson Distribution

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Grant and Affiliation Information for Anisotropic Poisson's ratio and compression modulus of cortical bone determined by speckle interferometry.

AFFILIATION: Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, P.O. Box 12, 76100 Rehorot, Israel. shahar@agri.huji.ac.il

Country: United States

AGENCY: United States NIDCR

GRANT: R01 DE006954

ACRONYM: DE

MEDLINETA: J Biomech

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