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Publication: Forest Products Journal
Authors: Xu Wei
Reference ID: 50(10):43-47
Publish Year: 2000
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Title: Influence of percent alignment and shelling ratio on modulus of elasticity of oriented strandboard: a model investigation
Description:
This paper uses a previously developed theoretical simulation model to investigate the influence of orientation level of strands as measured by percent alignment (PA), and shelling ratio (SR) (weight percentage of the face layer) on modulus of elasticity (MOE) of oriented strandboard (OSB). As expected, improving PA increases MOE-parallel and decreases MOE-perpendicular, but the decrease of MOE-perpendicular levels off after PA exceeds approximately 50 percent. Increasing SR improves MOE-parallel and decreases MOE-perpendicular, but the change of MOE is negligible after SR reaches approximately 0.7. This paper also shows that orientation level and use of different species in the core only have minimal influence on MOE. Use of MOE-ratio (MOE-parallel/MOE-perpendicular) to estimate PA in the face of three-layer commercial OSB is also discussed.
This paper uses a previously developed theoretical simulation model to investigate the influence of orientation level of strands as measured by percent alignment (PA), and shelling ratio (SR) (weight percentage of the face layer) on modulus of elasticity (MOE) of oriented strandboard (OSB). As expected, improving PA increases MOE-parallel and decreases MOE-perpendicular, but the decrease of MOE-perpendicular levels off after PA exceeds approximately 50 percent. Increasing SR improves MOE-parallel and decreases MOE-perpendicular, but the change of MOE is negligible after SR reaches approximately 0.7. This paper also shows that orientation level and use of different species in the core only have minimal influence on MOE. Use of MOE-ratio (MOE-parallel/MOE-perpendicular) to estimate PA in the face of three-layer commercial OSB is also discussed.
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