Comparative Analysis of the Nail and Screw Withdrawal Resistances of Fir (Abies Mill.), Cherry (Prunus Avium L.), Walnut (Juglans Regia L.) and Oak (Quercus L.) Wood

Year 2006, Volume: 2 Issue: 2, 61 - 75, 01.12.2006

Murat Kılıç , Erol Burdurlu , İlker Usta , Umut Özgür Berker Pelin Oduncu

Abstract

In this study, the nail and screw withdrawal resistance (NWR and SWR) of wooden materials obtained from Fir (Abies Mill.), Cherry (Prunus avium L.), Walnut (Juglans regia L.) and Oak (Quercus L.) on the tangential, radial and transverse cut surfaces were researched. A total of 480 each samples were prepared in conformance with ASTM 1761 in order to determine the effect of the species of wood and type of cut surface on the NWR and SWR and the NWR and SWR of these samples were measured on the universal test machine. The data obtained was analyzed statistically and the findings obtained were interpreted. According to this, the highest NWR and SWR was on the radial cut surfaces in oak. As the specific gravity increases, the NWR and SWR increases. In general, the radial cut surfaces have a higher NWR and SWR compared to the tangential and transverse cut surfaces and the tangential cut surfaces have a higher NWR and SWR compared to the transverse cut surfaces. 

Keywords

Wood, Nail, Screw, Withdrawal Resistance

Göknar (Abies Mill.), Kiraz (Prunus Avium L.), Ceviz (Junglans Regia L.) (Quercus L.) Analiz

Abstract

Bu çalışmada Göknar (Abies Mill.), Kiraz (Prunus avium L.), Ceviz (Junglans regia L.) ve Meşe (Quercus L.)’ den elde edilen ahşap malzemenin teğet, radyal ve enine kesit yüzeylerindeki çivi ve vida tutma dayanımları araştırılmıştır. Ağaç ve kesit yüzey türünün çivi ve vida tutma dayanımına etkisinin belirlenmesi için ASTM D 1761’e uygun olarak 480 adet numune hazırlanmış ve üniversal test makinesinde bu numunelerin çivi ve vida tutma dayanımları ölçülmüştür. Elde edilen veriler istatistiksel olarak analiz edilmiş elde edilen bulgular yorumlanmıştır. Buna göre en yüksek çivi ve vida tutma dayanımı Meşe’de radyal kesit yüzeylerde ortaya çıkmaktadır. Özgül ağırlık arttıkça çivi ve vida tutma dayanımı artmakta, genelde radyal kesit yüzeyler teğet ve enine kesit yüzeylere kıyasla ve teğet kesit yüzeyler de enine kesit yüzeylere kıyasla daha yüksek çivi ve vida tutma dayanımı vermektedir.

Keywords

Ahşap Malzeme, Çivi tutma dayanımı, Vida tutma dayanımı

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