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Journal of Materials Science
Published in: Journal of Materials Science 21/2010

01-11-2010

Orthotropic properties of loblolly pine (Pinus taeda) strands

Authors: Gi Young Jeong, Daniel P. Hindman, Audrey Zink-Sharp

Published in: Journal of Materials Science | Issue 21/2010

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Abstract

Orthotropic properties of loblolly pine strands were measured from growth ring numbers 1–10 and 11–20 using digital image correlation (DIC). Eight elastic properties (E L , E R , E T , G LR , G LT, υLR, υLT, and υRT) and five strength values (σL, σR, σT, τLR, and τLT) of loblolly pine strands were measured. Compliance matrices were derived and used to calculate the maximum normal and shear strains. With the increment of growth ring number, elastic modulus and ultimate tensile strength (UTS) generally increased, whereas shear strength decreased. Statistical comparison showed that elastic moduli, Poisson’s ratio, and UTS were highly dependent upon orientation of strands with loading direction. Only elastic modulus and UTS from the longitudinal-radial plane strands were significantly different by the two growth ring positions. More distinctive orthotropic properties of loblolly pine strands from growth ring numbers 11–20 were found associated with more consistent failure modes.
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Metadata
Title
Orthotropic properties of loblolly pine (Pinus taeda) strands
Authors
Gi Young Jeong
Daniel P. Hindman
Audrey Zink-Sharp
Publication date
01-11-2010
Publisher
Springer US
Published in
Journal of Materials Science / Issue 21/2010
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-010-4658-2

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