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On the fracture morphology in wood

part 1: A SEM-study of deformations in wood of spruce and aspen upon ultimate axial compression load

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Summary

Structural changes in spruce and aspen wood samples subjected to axial compression were examined by means of the scanning electron microscope. For comparison, macroscopic model experiments were carried out on tube-shaped samples made of paper so as to represent segments of fibriform xylem cells. The results show that there are fracture patterns characteristic of wood in general and others characteristic of the species of wood. The phenomena characteristic of wood in general are prevalent at the cellular level and in the fracture behaviour of the cell wall layers and perforations. The characteristics of the various species of wood dominate at the level of the growth rings and are decisively influenced by the composition and arrangement of the tissues. The model experiments show that the failure morphology of the individual cells of the xylem may be explained to some extent by their geometry.

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Authors and Affiliations

  1. Institut für Wald-und Holzforschung, Eidgenössische Technische Hochschule Zürich, Switzerland

    L. J. Kučera & M. Bariska

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  1. L. J. Kučera
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  2. M. Bariska
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Kučera, L.J., Bariska, M. On the fracture morphology in wood. Wood Sci. Technol. 16, 241–259 (1982). https://doi.org/10.1007/BF00353147

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  • DOI: https://doi.org/10.1007/BF00353147

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