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Effects of cross-sectional geometry and force direction on bending strength and modulus of elasticity of some softwood beams

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Date
2019
Author
Güray, E. and Kasal, A. and Demirci, S. and Ceylan, E. and Kuskun, T.
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Abstract
The effects of cross-sectional geometry and force direction on bending strength (MOR) and modulus of elasticity (MOE) were investigated in selected softwoods. The specimens were constructed of Scots pine (Pinus sylvestris), Black pine (Pinus nigra), Siberian pine (Pinus sibirica), Stone pine (Pinus pinea), Nordmann fir (Abies nordmanniana), Oriental spruce (Picea orientalis), and Lebanon cedar (Cedrus libani). A total of 280 specimens were prepared from these seven species in two different cross-sectional geometries (circular and square, equal in area) and tested in two characteristic force directions (tangential and radial) by 10 replications. They were subjected to three-point bending tests according to TS 2474 (2005) and TS 2478 (2005) to obtain the MOR and MOE. The results showed that the type of cross-sectional area and direction of applied force, individually or together, had considerable effects on the MOR and MOE. The MOR values of the circular-sectioned specimens were 5% greater than those of the square-sectioned specimens. The MOE values of the circular-sectioned specimens were on average 19% greater than those of the square-sectioned specimens. The MOR and MOE values were on average 7% and 17% greater, respectively, for the force applied in the tangential direction. © 2019, BioResources.
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075238263&partnerID=40&md5=e17657fe453386af80dc6d262fdb2ac9
http://acikerisim.bingol.edu.tr/handle/20.500.12898/4225
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  • Scopus İndeksli Yayınlar Koleksiyonu [1357]





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