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The mechanical behaviour of veneer subjected to bending and tensile loads

Das mechanische Verhalten von Furnier unter Biege- und Zugbelastung

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Abstract

Bending and tensile tests were carried out on veneer of beech (Fagus sylvatica L.) and European oak (Quercus robur L./Quercus petraea Liebl.) with a thickness between 0.35 mm and 0.5 mm. The tests were done on veneer in two test series, one parallel to the fibre and the other one perpendicular to the fibre. Mechanical properties and bending radiuses were measured and evaluated. It could be concluded that the bending properties of the veneers not only depend on the bending stiffness but also the mechanical strength and structure of the material. During the tests it could be shown that the 3-point bending test procedure is not a suitable method for determining the bending modulus of rupture.

Zusammenfassung

Es wurden Biege- und Zugprüfungen an Furnieren der Holzarten Rotbuche (Fagus sylvatica L.) und Europäische Eiche (Quercus robur L./Quercus petraea Liebl.) durchgeführt. Die Versuche wurden jeweils parallel und senkrecht zur Faserrichtung an 0,35 mm und 0,5 mm dicken Furnieren durchgeführt. Mechanische Kennwerte sowie Biegeradien wurden ermittelt und bewertet. Es konnte geschlussfolgert werden, dass die Biegefähigkeit von Furnieren nicht ausschließlich von deren Biegesteifigkeit abhängt, sondern Festigkeit und Struktur des Materials ebenfalls entscheidenden Einfluss haben. Zur Ermittlung der Biegefestigkeit von Furnier erwies sich der 3-Punkt-Biegeversuch als nicht geeignet.

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Correspondence to Beate Buchelt.

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Buchelt, B., Wagenführ, A. The mechanical behaviour of veneer subjected to bending and tensile loads . Holz Roh Werkst 66, 289–294 (2008). https://doi.org/10.1007/s00107-008-0235-7

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  • DOI: https://doi.org/10.1007/s00107-008-0235-7

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