Yazar "Altinok, M." seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    Determination of the effects of wood types and impregnation process in performance of the window frames corner joints
    (2013) Altinok, M.; Doruk, S.; Arslan, A.R.; Gürleyen, L.
    This study examines the effects of wood types and impregnation (procedure types and process time) in performance of window frames corner joint with double tenon. For this purpose, "L corner joint" type samples (number 120) were manufactured by using Scotch pine (Pinus sylvestris Lipsky), oak (Quercus petreaea Lipsky) and black locust (Robinia pseudoacacia L.). Polyvinyl acetate based (two kompenant-D4) adhesive were used to bond tenon and mortise corner joints. The samples were impregnated by using the method of immersion for 20 and 40 min with mixture of wax/linseed oil (3 % paraffin, 10 % linseed oil, 87 % white spirit) and imersol aqua. The diagonal compression test was applied to test samples (determine performance of the window frames corner joint) according to ASTM-D 143-83 1983 standards. Finally, the highest diagonal compression performance was obtained on black locust samples (7480.016 N) with the immersol aqua impregnated for 40 min. The lowest diagonal compression performance was received on oak samples (2572.706 N) which were impregnated in white mixture of wax/linseed oil for 40 min.
  • Küçük Resim Yok
    Öğe
    Effects of some environmentally-friendly fireretardant boron compounds on modulus of rupture and modulus of elasticity of wood
    (2009) Toker, H.; Baysal, E.; Simsek, H.; Senel, A.; Sonmez, A.; Altinok, M.; Ozcifci, A.
    This study was designed to determine some mechanical properties such as modulus of rupture (MOR) and modulus of elasticity (MOE) of wood treated with some environmentally-friendly fire-retardant boron compounds. Sodium perborate (SP) boric acid, (BA), and borax (BX) were used as boron compounds. Wood specimens were prepared from Calabrian pine (Pinus brutiaTen.) and beech (Fagus orientalis Lipski) wood. Before MOR and MOE tests, wood specimens were impregnated with aqueous solutions (1,2, 3,4, 5, and 6 %) of borates according to ASTM D 1413-76. Our results showed that MOR values of wood specimens treated with borates were lower compared to untreated control specimens. The MOR and MOE values of wood specimens were the lowest for treatments with SP followed by BX and BA, respectively. In general, the higher concentration levels of borates, the lower MOR of wood resulted.
  • Küçük Resim Yok
    Öğe
    An investigation on compression parallel to grain values of wood impregnated with some boron compounds
    (2008) Toker, H.; Baysal, E.; Ozcifci, A.; Altinok, M.; Sonmez, A.; Yapici, F.; Altun, S.
    This study was carried out to determine compression strength parallel to grain of wood impregnated with some boron compounds. Sodium perborate (SP) boric acid, (BA), and borax (BX) were used as boron compounds. Wood specimens were prepared from Calabrian pine (Pinus brutia Ten.) and beech (Fagus orientalis L.) wood. Before compression test parallel to grain, wood specimens were impregnated with aqueous solutions (1, 2, 3, 4, 5, and 6 %) of boron compounds according to ASTM D 1413(1976). Results showed that compression strength parallel to grain values ofwood specimens treated with boron compounds were lower compared to untreated control specimens. Borate treatments reduced compression strength parallel to grain of wood in significant level compared to untreated control. The compression strength parallel to grain values ofwood specimens were the highest for untreated control specimen followed by BA, BX, and SP treated wood specimens, respectively. In general, our results showed that the higher concentration levels of boron compounds, the lower compression strength parallel to grain values of wood resulted.