Skip to content


Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image
  • Original Article
  • Open Access

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

  • 1,
  • 1,
  • 2 and
  • 3
Journal of Wood ScienceOfficial Journal of the Japan Wood Research Society199844:BF00521868

  • Received: 23 April 1997
  • Accepted: 29 August 1997
  • Published:


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.

Key words

  • Radiata pine
  • Cell shrinkage
  • Shrinkage anisotropy
  • Power spectrum analysis
  • Two-layered model