Effect of Moisture on Bending and Breaking Resistance of Commercial Oriented Strandboards

Authors

  • Qinglin Wu

Keywords:

Design, flakeboard, stiffness, strength, thickness swelling

Abstract

This is a short addendum to an earlier paper (Wu and Suchsland 1997) on bending resistance (E·I) and breaking resistance (R·S) of commercial oriented strandboard (OSB). It is shown that for a moisture content (MC) change from 4 to 24%, the combined effect of increased MC and thickness swelling led to an average E·I loss of 37% in the parallel direction and 51% in the perpendicular direction; and to an average R·S loss of 31% in the parallel direction and 43% in the perpendicular direction. Predictive equations expressing E·I and R·S as functions of moisture content were established for various products.

References

Knudson, R. M. 1997. Moisture effect on properties of OSB. Personal communication.nSAS Institute Inc. 1994. SAS/STAT User's guide. Version 6. SAS Institute Inc., Cary, NC. 1688 pp.nWu, Q., and O. Suchsland. 1997. Effect of moisture on the flexural properties of commercial oriented strand boards. Wood Fiber Sci. 29(1):47-57.n

Downloads

Published

2007-06-19

Issue

Number 2 / April 1998

Section

Research Contributions

License

The copyright of an article published in Wood and Fiber Science is transferred to the Society of Wood Science and Technology (for U. S. Government employees: to the extent transferable), effective if and when the article is accepted for publication. This transfer grants the Society of Wood Science and Technology permission to republish all or any part of the article in any form, e.g., reprints for sale, microfiche, proceedings, etc. However, the authors reserve the following as set forth in the Copyright Law:

1. All proprietary rights other than copyright, such as patent rights.

2. The right to grant or refuse permission to third parties to republish all or part of the article or translations thereof. In the case of whole articles, such third parties must obtain Society of Wood Science and Technology written permission as well. However, the Society may grant rights with respect to Journal issues as a whole.

3. The right to use all or part of this article in future works of their own, such as lectures, press releases, reviews, text books, or reprint books.