WOOD RESEARCH Volume 61, Number 2, 2016
Rongrong Li, Xiaolei Guo, Pingxiang Cao, and Xiaodong (Alice) Wang

Optimization of laser cutting parameters for recombinant bamboo based on response surface methodology

A means for selecting the optimal process parameters for the laser cutting of recombinant bamboo, based on the design of experiments (DOE) approach, was presented. Recombinant bamboo with thicknesses of 5, 10, and 15 mm was cut by a CO2 laser. The parameters investigated were the laser power, air pressure, and cutting speed. The results were compared using a number of process responses which define the efficiency of the cutting, including the upper kerf (UK) width, lower kerf (LK) width, and the ratio of upper-to-lower kerfs. Mathematical models were developed to establish the relationship between the process parameters and response parameters; special graphs were drawn for this purpose. Finally, a numerical optimization was performed to find out the optimal process settings to achieve a minimumupper-to-lower kerf ratio.

WOOD RESEARCH Volume 62, Number 6, 2017
Bin Luo, Siyu Jin, Feng Cheng, Junhua Ying, Xue Bao, Hongguang Liu, and Li Li

Study on sanding force, power consumption and quality of calibrating sanding recombinant bamboo

Recombinant bamboo is a new kind of bamboo-based panel material that has been widely used as a structural material. However, there are many problems in the sanding process of this material. This study analyzes the impacts of sanding parameters on sanding force, sanding active power and sanding efficiency in sanding recombinant bamboo, which is meaningful for improving the sanding quality, reducing power consumption and collocating the sanding parameters more reasonably. Granularity, feed speed, sanding speed and setting sanding thickness have different influences on sanding force, sanding active power and sanding efficiency, and the grey relevancy results show that feed speed has the most significant effect on sanding force, sanding active power and sanding efficiency. The actual sanding thickness is smaller than setting sanding thickness, and the difference between actual and setting values (ΔTs) is influenced by sanding parameters. Taking a comprehensive consideration of ΔTs and standard deviation of actual sanding thickness, determine the optimum schemes according to the method of fuzzy comprehensive evaluation.

WOOD RESEARCH Volume 62, Number 6, 2017
Fu Yang and Fang Hai

Investigation of performance of recombinant bamboo chair through finite element technology

Recombinant Bamboo is a newly bamboo material which breaks through the traditional processing mode, and its excellent physical properties can fully replace the wood widely used in furniture manufacturing. In this paper, take the classic back chair for example, in order to research the application of recombinant bamboo material in the furniture, using ANSYS finite element analysis software to compare the stress and deformation of recombinant bamboo, rosewood and elm under stress states. Meanwhile, in order to find out which leg shape is most suitable for the back chair of recombinant bamboo, the impact of the current mainstream three legs on the mechanical properties of the back chair is analyzed. Moreover, the parametric design method can work out the optimum size of legs and seat which are the most important design elements of back chair. This provides an evidence-based and effective method for furniture design.