Investigations of flakeboard mat consolidation
<p>The response of a flake mat to the mechanical stress applied during consolidation is a function of mat structure, raw material properties and the environmental conditions created during pressing. This research project was aimed at improving the understanding of raw material behavior during...
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| Format: | Others |
| Language: | en |
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/43438 http://scholar.lib.vt.edu/theses/available/etd-06232009-063307/ |
| Summary: | <p>The response of a flake mat to the mechanical stress applied during
consolidation is a function of mat structure, raw material properties and the
environmental conditions created during pressing. This research project was
aimed at improving the understanding of raw material behavior during the
hot-pressing of wood based composites by examining the response of a wood
flake mat to the compression encountered during press closure in the flakeboard
manufacturing process. The structure of a flakeboard mat can be considered to be
that of a cellular material, the properties of which are governed by the cellular
geometry, or arrangement of cells, and the properties of the solid cell wall material.
A method for quantifying the cellular structure of a wood flake mat was developed
and implemented. The structure of thin mat sections and small flake mats was
quantified using image analysis techniques. The applicability of theories
developed for modelling the compressive behavior of cellular materials to the
consolidation of wood flake mats was investigated using thin mat sections. Narrow mat sections and small laboratory mats has similar void sizes but significantly
different void shapes. Void size was not significantly affected by flake orientation, but void shape was.</p> === Master of Science |
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