Elastic Analysis of Surface Reinforced Particleboard

Structural panel products are generally made from flakes, with a large length to width ratio, or wafers. Another possibility is to use lower grade particles in combination with reinforcement. A surface reinforced particleboard was fabricated, tested, and analyzed. The theory of laminated composites was applied to analysis of the surface reinforced randomly oriented flakeboard. The flakeboard, made using ring-cut flakes, was reinforced with a fiberglass reinforced plastic (phenol-resorcinol formaldehyde) applied to the surface. The composite was tested and analyzed in plate and beam flexure. A point loading at the center of the plate and third point loading of the beams were adequately modeled by the theory of laminated composites. The behavior of uniformly loaded plates was not as well modeled. The discrepancy appears to be in the manner in which the uniform load was applied. The effect of thickness density profile in the flakeboard was considered. The inclusion of the effect increased the accuracy of the prediction of behavior, but only slightly. This is probably due to the high ratio of the fiberglass reinforced plastic modulus to the flakeboard modulus.

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