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Wood Science and Technology

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25.04.2019 | Original

Determination of elastic properties of latewood and earlywood by digital image analysis technique

verfasst von: Tzu-Yu Kuo, Wei-Chung Wang

Erschienen in: Wood Science and Technology | Ausgabe 3/2019

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Abstract

The proportion of latewood varies from species to species and from site to site. To understand the stiffness of wood structures, it is necessary to accurately determine the modulus of elasticity (MOE) of the wood. In this paper, a digital image correlation method was used to analyze the surface strain of wood specimens during tensile testing and calculate the Poisson’s ratios of latewood and earlywood. Digital image analysis (DIA) and X-ray densitometry (XrD) techniques were employed to determine the latewood proportion. Good agreement was observed between the DIA and XrD results for the sapwood proportion. Based on the rule of mixtures, the effective MOE was calculated based on the MOEs of earlywood and latewood.

Vorheriger Artikel An advanced virtual grading method for wood based on surface information of knots

Nächster Artikel A new approach based on a combination of capacitance and near-infrared spectroscopy for estimating the moisture content of timber

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Titel: Determination of elastic properties of latewood and earlywood by digital image analysis technique
verfasst von: Tzu-Yu Kuo
Wei-Chung Wang
Publikationsdatum: 25.04.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: Wood Science and Technology / Ausgabe 3/2019
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI: https://doi.org/10.1007/s00226-019-01096-x

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