Determination Of Form (Shape) Stability Performance On Curved Laminated Wood (Lvl) Elements

Yıl 2017, Cilt: 17 Sayı: 3, 1192 - 1199, 29.12.2017

Necmi Kahraman Mustafa Altınok

Öz

The following determines performance stability of curved laminated wood elements made with a vacuum membrane press. For this purpose, 13 layers of 1.5 mm thick beech (Fagus orientalis Lipsky), sessile oak (Quercus petrean Liebl) and pine (Pinus sylvestris) veneer layers were glued with D4 adhesive using a vacuum membrane press and curved laminated wood samples were prepared. Diagonal compression test was applied on the prepared samples. The highest diagonal compression strength difference found between beech laminate and oak laminate was statistically insignificant. Most low strength samples consisted of laminated pine.

Anahtar Kelimeler

Vacuum Membrane Presses, Laminated Wood

Kaynakça

• Altınok M, Söğütlü C, Kahraman N,. 2009. Determination of bonding performance of laminated veneer elements produced in vacumm membrane press, Afyon Kocatepe University Journal of Science, Afyonkarahisar, 9(1), 51-60.
• Altınok M, Burdurlu E, Özkaya K,, 2008. Deformation analysis of curved laminated structural wood elements, Construction and Building Materials, 22, 32767.
• Altınok M, Döngel N., 1999. The effects of wood species, glue type and number of layer in lamination on the bending strength, Z.K.Ü. Karabuk Tec. Edu. Fac. Technology Journal, 2(1-2), 225-237.
• ASTM D4761 – 13, 2013. Standard Test Methods for Mechanical Properties of Lumber and Wood-Base Structural Material, United States Standards, USA.
• BS EN 204, 2001. Non–structural adhesives for joining of wood and derived timber products, British Standards, England.
• Colling F., 1995. Glued laminated timber - Production and strength classes, Step A8.
• Eckelman C A., 1993. Potential uses of laminated veneer lumber in furniture, Forest Products Journal, 43, 19-24.
• Genbilim, Türkiye’s Science Webpage, 2011. Losses of electromagnetic fields. http://www.genbilim. com/content/view/1897/36
• Glued Wood Products, 2002. (Working Group 2), Transportation Research Board. National Academy of Sciences, 2nd Edition, Washington D C, 65-69.
• Keskin H., 2001. Technical properties of laminated wood materials and possibilities of using them in woodworking industry, Ph.D. Thesis, Gazi University Institute of Science and Technology, Ankara, 163.
• Keskin H, Togay A., 2003. Some physical and mechanical properties of wood laminated materials produced with a combination of the Oriental Beech and Black poplar, Süleyman Demirel University Journal of the Faculty of Forestry, Isparta, 2, 101-114.
• Kılıç Y, Gürey A., 1996. The effect of lamination technics on Alder wood’s mechanical properties, I. National Furniture Congress, Ankara.
• Kleiberit, 2006. PVAc D4 adhesive product technical catalog, Kleiberit product catalog, Germany, 1-3.
• Leufenberg T., 1982. Exposure Effect Upon Performance of Laminated Veneer Lumber and Glulam Materials, Forest Products Journal, 32, 5.
• Örs Y, Özçifçi A, Atar M., 1999. Bonding resistance of the Klebit 303, Kleiberit 305.0 and Süper–Lackleim 308 adhesives, Turkish Journal of Agriculture and Forestry, 23(3), 757–761.
• Park Han-Min, Fushitani M, Sato K, Kubo T, Byeon Hee-Seop, 2003. Static bending strength performances of cross-laminated woods made with five species, The Japan Wood Research Society, Japan, 49, 411-417.
• Söğütlü C, Döngel N., 2007. Tensile shear strengths of some local woods bonded with polyvinyl acetate andpolyurethane adhesives G.U. Faculty of Technical Education, Journal of Polytechnic, 10(3), 287-293.
• Sönmez,A. Söğütlü,C. 2005. Rendeleme İşleminin Ağaç Malzeme Yüzey Pürüzlülüğüne Etkisi. Z.K.Ü. Teknik Eğitim Fakültesi, Teknoloji Dergisi, 8(3), 279-285.
• TS EN 387, 2003. Glued laminated timber - Large finger joints - Performance requirements and minimum production requirements, TSE Standard, Ankara, 1–4.
• Uysal, B., 2005. Bonding Strength and Dimentional Stabilityof Laminated Veneer Lumbers Manufactured Byusing Different Adhesives After The Steam Test, International Journal of Adhesion and Adhesives, 25, 395-403