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The effect of drying on wood fracture surfaces from specimens loaded in wet condition
Kungliga tekniska högskolan, KTH.
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå tekniska universitet.
1998 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 32, no 2, p. 83-94Article in journal (Refereed) Published
Abstract [en]

The study describes the effect of drying on fracture surfaces of Scots pinePinus silvestris L. Microtomed specimens of isolated and combined early-and latewood, in green and oven-dried/resoaked state were loaded to failure in uniaxial tension parallel to the grain. The fracture surfaces were studied using scanning electron microscopy (SEM). Both green early- and latewood samples showed rough fracture surfaces, which in latewood was dominated by intrawall failure. In the resoaked state, transwall failure dominated and fracture surfaces were more flat, indicating a more brittle fracture process. Although variation in the data was large, the strength of the resoaked samples were generally lower than those of paired green samples. The observations support irreversible cell wall damage formed during drying which severely affects the failure mechanism.

Place, publisher, year, edition, pages
1998. Vol. 32, no 2, p. 83-94
National Category
Composite Science and Engineering
Research subject
Polymeric Composite Materials
Identifiers
URN: urn:nbn:se:ltu:diva-6424DOI: 10.1007/BF00702589Local ID: 4a5d2920-b51d-11db-bf94-000ea68e967bOAI: oai:DiVA.org:ltu-6424DiVA, id: diva2:979309
Note
Godkänd; 1998; 20070205 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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