Water Resistance of Welded Birch Wood Produced by Linear Friction

Year 2020, Volume: 20 Issue: 3, 266 - 271, 30.12.2020

Mustafa Zor Mojgan Vazırı Dick Sandberg

https://doi.org/10.17475/kastorman.849500

Abstract

Aim of study: In this study, it was aimed to determine the shear strength after water immersion and observe bond-line density of the welded birch wood.
Material and methods: 24 welded samples of dimensions 200x20x20 mm3 (LxTxR) were prepared from sapwood of birch wood (Betula pendula). Shear strength of welded birch at 24h and 48h water soaking were investigated.X-Ray CT-scanning was used to monitor the density profile of welded bond-line.
Main results: The results showed that shear strength decreased slightly with increasing water immersion time. The decreasing of the average shear strength, caused by immersion for 24h and 48h were 60.25% and 78.9%, respectively, compared to control sample. With the welding process, a significant change in density was observed in the welding bond-line. As a result, the X-Ray CT scanner shows that it works effectively on wood material.
Highlights: The results of this research revealed the applicability of a new method alternative to traditional mechanical fasteners (nail, screw etc.) or gluing. The availability of welding combining method in the field of wood engineering should be explored widely and more studies are recommended for appropriate parameters.

Keywords

Birch Wood, X-Ray CT Scanner, Linear Welding, Water Resistance

Supporting Institution

the Scientific and Technological Research Council of Turkey (TUBITAK- 2219/BIDEB, 2019)

Doğrusal Sürtünme İle Üretilen Kaynaklanmış Huş Odunun Su Dayanımı

Abstract

Çalışmanın amacı: Bu çalışmada, kaynaklanmış huş odunun su daldırma sonrası makaslama dayanımının belirlenmesi ve kaynak birleşim hattı yoğunluğunun gözlemlenmesi amaçlanmaktadır.
Materyal ve yöntem: Huş odunun diri odunlarından 200x20x20 mm3(boyuna x radyal x teğet boyutlarında 24 örnek hazırlanmıştır. 24 saatlik ve 48 saatlik suya daldırma sonrası kaynaklanmış huş odunun makaslama dayanımları incelenmiştir. Odun kaynak birleşim hattının yoğunluk değişimi için X-Ray bilgisayarlı tomografi tarayıcısı kullanıldı.
Temel sonuçlar: Sonuçlara göre, suya daldırma süresi arttıkça makaslama dayanımı azda olsa azalma göstermiştir. Kontrol örneğine göre, makaslama dayanımındaki azalış, 24 saatte ortalama %60.25, 48 saatte ortalama %78,9 oranındadır. Kaynak işlemi ile kaynak hattında yoğunlukta önemli derecede değişiklik gözlenmiştir. Sonuç olarak, kullanılan X-Ray CT tarayıcısı, ahşap malzeme üzerinde etkili bir şekilde çalıştığını göstermektedir.
Araştırma vurguları: Bu araştırmanın sonuçları, geleneksel ahşap mekanik bağlantı elemanlarına (çivi, vida vb.)ya da yapıştırmaya alternatif yeni bir yöntemin uygulanabilirliği ortaya çıkmıştır. Ahşap mühendisliği alanında kaynak birleştirme yönteminin kullanılabilirliği geniş çapta irdelenmeli ve uygun parametreler için daha çok çalışmalar yapılması önerilmektedir.

Keywords

Huş Odunu, X-Ray CT Tarayıcı, Doğrusal Kaynaklama, Su Dayanımı

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