A Satistical Characterization of The Horizontal Density Distribution in Flakeboard


  • Wei Xu
  • Paul R. Steiner


Density distribution, structure, particleboard, wood composites


Studies reported on the horizontal density distribution (HDD) of wood composites and paper materials are reviewed. The literature suggests that for wood composites a concept for quantifying the HDD has yet to be established. The variation of HDD is shown to decrease as the specimen size increases. When determined within the less sensitive range, the horizontal density variation is likely a reflection of the forming nonuniformity, while the variation exhibited at smaller specimen sizes is caused mainly by voids present in the board structure. A model is established to relate the magnitude of HDD, as quantified by the standard deviation, to the specimen size based on a density variation phenomenon and statistical considerations.


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