Flexural Behavior of Glass Fiber Reinforced Hardboard
Keywords:Hardboard, reinforced wood composite, wood fiber, glass fiber, mechanical properties
AbstractThe flexural stiffness and strength of a dry-process hardboard matrix were significantly improved by internal reinforcement with continuous glass fibers. The dynamic and static moduli of elasticity and the modulus of rupture of glass fiber reinforced hardboard increased with increasing reinforcement volume fraction. When modelled as a sandwich construction, the static flexural modulus of elasticity of the composite could be accurately predicted from the modulus of elasticity of the wood fiber matrix, and the tensile modulus of elasticity and volume fraction of the glass fiber reinforcement. Excellent linear correlation among the dynamic modulus of elasticity, the static modulus of elasticity, and the modulus of rupture allowed for estimation of the composite failure stress from flexural properties that were determined nondestructively. The results of this study will assist in the design of glass fiber reinforced hardboard composites.
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