The effect of temperature and moisture content on the fracture behaviour of spruce and birch

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The effect of temperature and moisture content on the fracture behaviour of spruce and birch. / Tukiainen, Pekka; Hughes, Mark.

In: Holzforschung, Vol. 70, No. 4, 01.04.2016, p. 369-376.

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@article{1d0a0c9095d042efa371997722b27eae,
title = "The effect of temperature and moisture content on the fracture behaviour of spruce and birch",
abstract = "The fracture behaviour of wood is affected by, amongst other factors, its microscopic structure, moisture content and temperature, as well as the direction of crack propagation. Spruce (Picea abies [L.] Karst.) and birch (Betula pendula Roth.) compact tension specimens were subjected to pure mode I loading in both the radial-tangential (RT) and tangential-radial (TR) orientations under four climatic conditions. The effect of microscopic structure on crack propagation was observed, and the {"}crack mouth opening displacement vs. load{"} histories were recorded, from which characteristic fracture parameters were calculated. The fracture surfaces were subsequently examined by optical microscopy. In both species, distinct changes in the fracture behaviour were observed as moisture content (MC) and temperature (T) were varied. The results were specific for the wood species, but MC and T influenced fracture behaviour in a similar way. The effects were more pronounced in birch than in spruce. Elevated T and MC did not affect the failure mode, except in the case of spruce in the RT orientation.",
keywords = "birch, CT specimen, fracture, moisture content, RT direction, spruce, temperature, TR direction, CRACK-PROPAGATION SYSTEM, MECHANICAL-PROPERTIES, FINITE-ELEMENT, WOOD FRACTURE, MICROMECHANICS, TOUGHNESS, COMPOSITES., GROWTH",
author = "Pekka Tukiainen and Mark Hughes",
year = "2016",
month = "4",
day = "1",
doi = "10.1515/hf-2015-0017",
language = "English",
volume = "70",
pages = "369--376",
journal = "Holzforschung",
issn = "0018-3830",
number = "4",

}

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TY - JOUR

T1 - The effect of temperature and moisture content on the fracture behaviour of spruce and birch

AU - Tukiainen, Pekka

AU - Hughes, Mark

PY - 2016/4/1

Y1 - 2016/4/1

N2 - The fracture behaviour of wood is affected by, amongst other factors, its microscopic structure, moisture content and temperature, as well as the direction of crack propagation. Spruce (Picea abies [L.] Karst.) and birch (Betula pendula Roth.) compact tension specimens were subjected to pure mode I loading in both the radial-tangential (RT) and tangential-radial (TR) orientations under four climatic conditions. The effect of microscopic structure on crack propagation was observed, and the "crack mouth opening displacement vs. load" histories were recorded, from which characteristic fracture parameters were calculated. The fracture surfaces were subsequently examined by optical microscopy. In both species, distinct changes in the fracture behaviour were observed as moisture content (MC) and temperature (T) were varied. The results were specific for the wood species, but MC and T influenced fracture behaviour in a similar way. The effects were more pronounced in birch than in spruce. Elevated T and MC did not affect the failure mode, except in the case of spruce in the RT orientation.

AB - The fracture behaviour of wood is affected by, amongst other factors, its microscopic structure, moisture content and temperature, as well as the direction of crack propagation. Spruce (Picea abies [L.] Karst.) and birch (Betula pendula Roth.) compact tension specimens were subjected to pure mode I loading in both the radial-tangential (RT) and tangential-radial (TR) orientations under four climatic conditions. The effect of microscopic structure on crack propagation was observed, and the "crack mouth opening displacement vs. load" histories were recorded, from which characteristic fracture parameters were calculated. The fracture surfaces were subsequently examined by optical microscopy. In both species, distinct changes in the fracture behaviour were observed as moisture content (MC) and temperature (T) were varied. The results were specific for the wood species, but MC and T influenced fracture behaviour in a similar way. The effects were more pronounced in birch than in spruce. Elevated T and MC did not affect the failure mode, except in the case of spruce in the RT orientation.

KW - birch

KW - CT specimen

KW - fracture

KW - moisture content

KW - RT direction

KW - spruce

KW - temperature

KW - TR direction

KW - CRACK-PROPAGATION SYSTEM

KW - MECHANICAL-PROPERTIES

KW - FINITE-ELEMENT

KW - WOOD FRACTURE

KW - MICROMECHANICS

KW - TOUGHNESS

KW - COMPOSITES.

KW - GROWTH

UR - http://www.scopus.com/inward/record.url?scp=84964375924&partnerID=8YFLogxK

U2 - 10.1515/hf-2015-0017

DO - 10.1515/hf-2015-0017

M3 - Article

VL - 70

SP - 369

EP - 376

JO - Holzforschung

JF - Holzforschung

SN - 0018-3830

IS - 4

ER -

ID: 2548908