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Paul Wallden

Tutkimuksia koivupuun anatoomisen rakenteen ja teknillisten ominaisuuksien keskinäisestä riippuvuudesta solumittauksien perusteella

Wallden P. (1934). Tutkimuksia koivupuun anatoomisen rakenteen ja teknillisten ominaisuuksien keskinäisestä riippuvuudesta solumittauksien perusteella. Acta Forestalia Fennica vol. 40 no. 14 article id 7291. https://doi.org/10.14214/aff.7291

English title: Studies on relationship between anatomical structure and technical properties of birch wood.

Abstract

Birch wood is used widely in wooden structures where mechanical strength is needed. The aim of the research was to study the influence of the relative share of mechanically weak tracheids, and length of the wood fibers on specific gravity and bending strength of downy birch (Betula pubescens Ehrh.) wood. According to the results, the strength of wood is strongly dependent on the relative share of tracheids, and length of the libriform cells. The strength of the wood increases when the share of tracheids decreases and the length of libriform cells increases. The specific gravity can be used as an indication of the strength of wood, especially if it is possible to analyze the structure of the wood.

The PDF includes a summary in German.

Original keywords
koivu; Betula pubescens; taivutuslujuus; puu; putkilo

English keywords
downy birch; bending strength; wood; tracheid; libriform cell

Published in 1934

Available at https://doi.org/10.14214/aff.7291 | Download PDF

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Wallden P. (1934) Studies on relationship between anatomical struc.. Silva Fennica vol. 40 no. 14 article id 7291
Walldén P. (1933) Bending strength of birch wood Silva Fennica vol. 39 no. 5 article id 7276