FORESTIST
Araştırma Makalesi (Research Article)

Bending of Solid Wood

1.

İ.Ü.Orman Fakültesi, Orman Endüstri Mühendisliği Bölümü, Odun Mekaniği ve Teknolojisi Anabilim Dalı

FORESTIST 2010; 60: 29-37
DOI: 10.17099/jffiu.17763
Read: 725 Downloads: 539 Published: 18 February 2010

Bending of wood as a well-known process has been used for many years. Curved wood parts are used in production of furniture, arched windows-doors, basket, barrel, boats and ships, tool handles, sporting goods, agricultural implements and musical instruments. When a piece of wood is bent, tension occurs in the outer side and compression in the inner side. Generally bending quality of hardwoods is better than that of softwoods and exotic wood species cannot be bent to small radii. Bending of wood demonstrates variations depending on many factors such as radius of bending, species, moisture content, thickness and width of wood, steaming time, fiber direction and defects. Selected wood for bending must be defect-free and have straight fibers. Factors such as tree age, rate of growth, soil characteristics have secondary importance. In order to improve bending qualities of wood, some pre-treatments such as steaming, immersion in boiling water, precompression application and impregnation with ammonia or urea are used. Investigations connected with bending of solid wood generally have determined minimum bending radius of wood species. Studies regarding with bending of solid woods are very limited. Additionally there is lack of bending radius of wood species grown in Turkey and changes in mechanical properties of wood after bending.

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EISSN 2602-4039