Development of a Bending Stiffness Model for Wet Process Fiberboard

Authors

  • Chris Turk
  • John F. Hunt

Keywords:

National fire plan, fiberboard, bending stiffness, modulus of elasticity, dynamic testing, dynamic modulus, density, area density, sheet weight, process variable, value-added

Abstract

In traditional mechanics of materials, the stiffness of a beam or plate in bending is described by its cross-sectional shape as well as its material properties, primarily the modulus of elasticity. Previous work at the USDA Forest Products Laboratory, Madison, Wisconsin, has shown that modulus of elasticity has a strong correlation to the density of the fiberboard. Examined here are experimental and theoretical relationships between process variables of bulk density and area density and the transverse bending stiffness of the fiberboard. A model is developed and evaluated for the relationship between area density, bulk density, and bending stiffness.

References

Barbour, J. 1999. Relationship between diameter and gross product value for small trees. Pages 40-46 in Proc. 27th Wood Technology and Show, Forest Products Society, Madison WI. Miller Freeman, San Francisco, CA.nHarris C. M., and A. G. Piersol. 2002. Harris' shock and vibration handbook. Chapter 7 (5th ed.). McGraw-Hill, New York, NY.nHunt, J. F. 1999. Mechanical property variables for formed fiber packaging. USDA Forest Products Laboratory, for Proc. of International Molded Fibre Product Seminar 4th International Seminar on Molded Pulp Packaging. November 19, 1999, Chicago, IL. International Molded Pulp Environmental Packaging Association, Mequon, WI.nHunt, J. F., and C. Turk. 2006. Development of a test for measurement of dynamic modulus. In preparation.nJohn, E. G. 1998. Simplified curve fitting using spreadsheet add-ins. Systems Division, School of Engineering, Cardiff University. Inter. J. Eng. Ed.14(5):375-380.nORNL. 1999. Biomass feedstock availability in the United States 1999 state-level analysis, Marie E. Walsh and others. Oak Ridge National Laboratory, Oak Ridge TN. Updated 2000. http://bioenergy.ornl.gov/resourcedata/1999biomass_quantity.xls'>http://bioenergy.ornl.gov/resourcedata/1999biomass_quantity.xlsnUSDA Forest Service. 2005. National Fire Plan. http://www.fireplan.gov/'>http://www.fireplan.gov/n

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Published

2007-06-05

Issue

Number 1 / January 2007

Section

Research Contributions

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