ADHESIVE-FREE WOOD JOINTS – PART I: SESSILE OAK WOOD (Quercus petraea L.)

• Main Author: Ramona-Elena DUMITRAȘCU
• Format: Article
• Language: English
• Published: Editura Universitatii Transilvania din Brasov 2015-09-01
• Series: Pro Ligno
• Online Access: http://www.proligno.ro/ro/articles/2015/3/dumitrascu.pdf

act: Wood as a raw material is indispensable in various human activities. Its investigation is inexhaustible and its responsible valorization, in accordance with current requirements for re-use and subsequent re-integration, is a priority at national level. Rotational friction as an alternative method of joining wood elements or wooden structures has not been addressed in Romania until now, even if it has been under investigation during the past 15 years in the wood field. The paper presents an experimental investigation carried out in order to analyze the process parameters in case of sessile oak wood (Quercus petraea L.) at the activation of lignin through rotational friction, with a view to using this method in furniture design as an alternative for classical (glued) joints. The results showed that at 1600rpm, sessile oak wood (Quercus petraea L.) registered a more compact and uniform area of contact than at 1120rpm, on both wood sections. There is a significant difference between dowels with oblique and linear ribbed joints: the dowels with linear ribs lead to a more uniform density. The quality of the connection mainly depends on the rotation speed and the insertion speed. The overall conclusion of this experimental research is that sessile oak wood (Quercus petraea L.) can be used for adhesive-free joints for furniture.