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Official Journal of the Japan Wood Research Society

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Transverse shrinkage anisotropy of coniferous wood investigated by the power spectrum analysis


The transverse shrinkage behavior of early wood and late wood tracheids of radiata pine (Pinus radiata D. Don) was investigated by the power spectrum analysis. The representative cell model shapes before and after shrinkage constructed by the analysis revealed that the early wood tracheid showed anisotropic shrinkage, although the late wood tracheid showed almost isotropic shrinkage. To link the macroscopic shrinkage of coniferous wood with the results obtained by the power spectrum analysis, a two-layer model composed of early wood and late wood was adopted, and the relation between shrinkage anisotropy and late wood fraction was predicted. The results suggested that the shrinkage anisotropy depended significantly on the mechanical interaction between early and late wood.


  1. Pentoney RE (1953) Mechanisms affecting tangential vs. radial shrinkage. J Forest Prod Res Soc 3(2):27–32

    Google Scholar 

  2. Nakato K, Kajita S (1955) On the cause of the anisotropic shrinkage and swelling of wood. VI. On the relationships between the annual ring and the anisotropic shrinkage (in Japanese). J Jpn Forest Soc 37(l):22–25

    Google Scholar 

  3. Nakato K (1963) Current trends in researches on the mechanism of anisotropic shrinkage of wood (in Japanese). Mokuzai Gakkaishi 9:147–152

    Google Scholar 

  4. Maekawa T, Fujita M, Saiki H (1993) Characterization of cell arrangement by polar coordinate analysis of power spectral patterns (in Japanese). J See Mater Sci Jpn 42:126–131

    Article  Google Scholar 

  5. Watanabe U, Fujita M, Norimoto M (1996) Analysis of the shrinkage deformation of wood cells using the replica and fast Fourier transform methods. In: Donaldson LA, Singh AP, Butterfield BG, Whitehouse LJ (eds) Recent advances in wood anatomy. New Zealand Forest Research Institute Ltd. pp 363–365

  6. Adachi A, Ishimaru Y, Fujita M, Sadoh T (1989) Swelling anisotropy of wood in organic liquids. II. Transverse swelling behavior of buna revealed by the replica method (in Japanese). Mokuzai Gakkaishi 35:689–695

    Google Scholar 

  7. Yuhara T, Hasuike M, Murakami K (1987) Application of the image processing technique for analysis on sheet structure of paper. III. Determination of the fiber orientation distribution of paper (in Japanese). Jpn Tappi J 41:523–529

    Article  Google Scholar 

  8. Yano H, Yamada T (1985) The dynamic mechanical-properties of wood in the radial direction (in Japanese). Mokuzai Gakkaishi 31:222–230

    Google Scholar 

  9. Gibson LJ, Ashby MF (1988) The mechanics of honeycombs. In: Cellular solids. Pergamon, Oxford, pp 69–118

    Google Scholar 

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Part of this report was presented at the 46th Annual Meeting of the Japan Wood Research Society at Kumamoto, April 1996

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Watanabe, U., Norimoto, M., Fujita, M. et al. Transverse shrinkage anisotropy of coniferous wood investigated by the power spectrum analysis. J Wood Sci 44, 9–14 (1998).

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