Quadratic RSM Models of Processing Parameters for Three-Layer Oriented Flakeboards


  • Kaiyuan Wang
  • Frank Lam


Slenderness ratio, flake orientation, density, response surface method, optimization, oriented strandboard


Response surface method with central composite design was used to establish quadratic regression models and surface maps to relate panel properties, including static bending modulus of elasticity, modulus of rupture, internal bond strength, and thickness swelling with flake slenderness ratio, flake orientation, and panel density. A robot mat formation system was used to form the panels with predefined processing parameters. Results indicated that nonlinear models capable of including interactions were required to relate flake slenderness ratio, flake orientation, and panel density to panel properties. An optimization model was developed to obtain the best panel performance with respect to the three factors. The optimized combination of the three factors within the experimental range is: 133 for flake slenderness ratio, 8° for surface flake orientation, and 0.62g/cm3 for board density.


American Society for Testing and Materials. (ASTM). 1994. D-1037-93 Standard test methods for evaluating properties of wood-base fiber and particle panel materials. Philadelphia, PA.nAu, K. C., R. O. Gertijejansen, and K. Larntz. 1992. Use of response surface methodology to maximize paper birch utilization in a three-layer, two-species oriented strandboard. Wood Fiber Sci. 24(4): 432-441.nCanadian Standards of Association. 1994. Standards on OSB and waferboard. CAN/CSA-0437.0-93.nCanadido, L. S., F. Saito, and S. Suzuki. 1988. Effect of particle shape on the orthotropic properties of oriented strand board. Mokuzai Gakkaishi 34(1): 21-27.nCanadido, L. S., F. Saito, and S. Suzuki. 1990. Influence of strand thickness and board density on the orthotropic properties of oriented strandboard. Mokuzai Gakkaishi 36(8): 632-636.nChen, L. Z., H. Zhang, Q. Wu, and J. Wu. 1981. Application of optimization design in mechanical engineering. Shanghai Sci. and Technol. Publishing Company. Shanghai, China. 293 pp.nDoyle, M., M. Sander, S. Shepard, and J. Yavorsky. 1996. Quadratic models for predicting performance of high quality OSB. Pages 55-63 in Proc. Third Pacific Rim Bio-Based Composites Symposium. Kyoto, Japan.nEthington, R. L. 1978. Structural flakeboard from forest residues. Gen. Tech. Rep. Wo-5. Edit. USDA Forest Serv., Washington, D.C. 241 pp.nGeimer, R. L. 1982. Dimensional stability of flakeboards as affected by board specific gravity and flake alignment. Forest Prod. J. 32(8): 44-52.nGeimer, R. L., H. M. Montrey, and W. F. Lehmann. 1975. Effects of layer characteristics on the properties of three-layer particleboards. Forest Prod. J. 25(3): 19-29.nHsu, W. E. 1996. Optimization of pressing parameters for waferboard/OSB panels. Canadian Forest Service. No. 19. Forintek Canada Corporation. 27 pp.nHsu, W. E., and S. Kirincic. 1996. Advancement in OSB manufacturing technology. Pages 46-54 in Proc. Third Pacific Rim Bio-Based Composites Symposium. Kyoto, Japan.nKelly, M. 1977. Critical review of relationships between processing parameters and physical properties of particleboard. General Technical Report FPL-10. USDA Forest Products Lab, Madison, WI. 65 pp.nKhuri, A. I., and J. A. Cornell. 1996. Response surfaces: Designs and analyses. Marcel Dekker. New York, NY. 510 pp.nKuester, J. L., and J. H. Mize. 1973. Optimization techniques with Fortran. McGraw-Hill, Inc. New York, NY. 500 pp.nLau, P. W. 1981. Numerical approach to predict the modulus of elasticity of oriented waferboard. Wood Sci. 14(2): 73-85.nLehmann, W. F. 1974. Properties of structural particle-boards. Forest Prod. J. 24(1): 19-26.nLu, C., P. R. Steiner, and F. Lam. 1998. Simulation study of wood-flake composite mat structures. Forest Prod. J. 48(5): 89-93.nMao, S. 1981. Regression analysis and experiment design. Huadong Normal University. Shanghai, China. 375 pp.nMcNatt, J. D., L. Bach, and R. W. Wellwood. 1992. Contribution of flake alignment to performance of strand-board. Forest Prod. J. 42(3): 45-50.nMoslemi, A. A. 1974. Particleboard. Vol. I: Materials. Southern Illinois University Press. Carbonale and Edwardsville, IL. 244 pp.nWang, K., and F. Lam. 1998. Robot-based research on three-layer oriented flakeboards. Wood Fiber Sci. 30(4)339-347.nWarren, W. G., and J. R. T. Hailey. 1980. Using response-surface methodology to evaluate veneer yield and quality. Wood Science 12(3): 132-140.n






Research Contributions