Quantitative Wood Anatomy—Relating Anatomy to Transverse Tensile Strength

Authors

  • Wade H. Beery
  • Geza Ifju
  • Thomas E. McLain

Keywords:

Tension perpendicular-to-grain, wood anatomy, stereology

Abstract

The tension perpendicular-to-grain properties of eight North American hardwood species were determined and related to their anatomy. Stereological techniques based on countings of points and intersections were used to quantitatively characterize the anatomy of each species. Modulus of elasticity and proportional limit stress values were found to be more dependent on specific gravity than anatomy. However, the properties associated with failure were closely associated with anatomical features. Earlywood vessel area fraction negatively influenced radial maximum stress and strain, whereas the ray width and area fraction were positively related to the maximum radial properties. Analysis showed that the rays significantly affected the transverse stiffness.

References

Bodig, J. 1965. The effect of anatomy on the initial stress-strain relationship in transverse compression. For. Prod. J.15(5):197-202.nBodig, J. 1966. Stress-strain relationship for wood in transverse compression. J. Materials1(3):645-666.nIfju, G. 1983. Quantitative wood anatomy—Certain geometrical-statistical relationships. Wood Fiber Sci.15(4):326-337.nIfju, G., J. D. Chimelo, and T. Nasroun. 1978. Structure-property relations for wood and wood products. Proceedings: V. Inter-American Conference on Materials Technology, IPT, Sao Paulo, Brazil. Pp. 259-268.nKennedy, R. W. 1968. Wood in transverse compression: Influence of some anatomical variables and density on behavior. For. Prod. J.18(3):36-40.nSchniewind, A. P. 1959. Transverse anisotropy of wood: A function of gross anatomic structure. For. Prod. J.9(10):350-360.nSteele, J. H., G. Ifju, and J. A. Johnson. 1976. Quantitative characterization of wood micro-structure. J. Microscopy107(3):297-311.n

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Published

2007-06-27

Issue

Number 4 / October 1983

Section

Research Contributions

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