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Assessment of continuous distribution of wood properties from a low number of samples: Application to the variability of modulus of elasticity between trees and within a tree by Henri Baillères; Olivier Vitrac; Tahiana Ramananantoandro is a Engineering article available to read on EtoBox.

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## Abstract The aim of this study was to propose an alternative non-deterministic and non-parametric technique for describing continuous variation in modulus of elasticity (__E__) within and between stems. The material studied consisted of hybrid__Eucalyptus__(__Eucalyptus urophylla__×__Eucalyptus grandis__) stems felled at the age of 59 months. Samples for measuring__E__were taken along a diameter slab at 1.30 m above ground. The results showed that the proposed reconstruction technique is consistent compared to results from other studies on__Eucalyptus__.__E__increases from pith to bark, following a polynomial distribution. Local and tree-averaged__E__increased with cambial age, following a sigmoidal profile that can be described with five characteristic parameters (__E__at pith,__E__at inflection point,__E__after inflection point, cambial age when latency period ends, and cambial age at inflection point). The tree contributes little to the total variation. The most important changes in__E__value were found with increasing radial position, with this effect eight-fold more important than the tree effect.

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Author

Henri Baillères; Olivier Vitrac; Tahiana Ramananantoandro

Publisher

Walter de Gruyter GmbH

Published

2005

Language

EN

Field

Engineering (Physical Sciences)