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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH   FALL 2017 , Volume 32 , Number 3 (60) ; Page(s) 382 To 391.

Investigating and comparing the tensile strength of hardwood dowel joints, made by glue and welding

Author(s):  Omrani P.*, Eisapour R.
* Wood Science and Technology Department, The Faculty of Civil Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran
The insertion of dowels into solid wood for furniture manufacture has been used for centuries. However, recently, this simple technology has been upgraded. The objective of the research was to evaluate and compare the tensile strength of the joints made by wood dowel using new method of “ wood welding” and classical method of “ using of glue” . Variables included dowel joints method (welding joint and joint with glue), dowel diameter (10 and 12 mm) and dowel surface texture (smooth and grooved). Members joint and dowel wood were hornbeam species (Carpinus betulus) and glue was polyvinyl acetate (PVA). The results showed that the types of joints, diameter and surface texture have significant effect on the tensile strength. The welded joints, dowel diameter 12 mm and grooved surface has the highest tensile strength compared to other samples. The results also showed that in all cases, the strengths of the joints made by welding was higher than the joints made by PVA glue.
Keyword(s): Wood welding,dowel joint,the tensile strength of the joint,polyvinyl acetate,Carpinus betulus
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