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J. Manuf. Mater. Process. 2018, 2(1), 7; doi:10.3390/jmmp2010007

Manufacture of Profiled Amabilis Fir Deckboards with Reduced Susceptibility to Surface Checking

Centre for Advanced Wood Processing, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Department of Applied Mathematics, The Australian National University, Canberra, ACT 0200, Australia
Author to whom correspondence should be addressed.
Received: 22 December 2017 / Revised: 16 January 2018 / Accepted: 22 January 2018 / Published: 24 January 2018
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Machining grooves and ridges (peaks) into the surface of wooden deckboards reduces undesirable checking that develops when “profiled” boards are exposed to the weather. We aim to develop improved profiles for amabilis fir decking to reduce its susceptibility to checking, and also to examine whether profiling influences distortion (cupping) of deckboards. We systematically varied radii of grooves and peaks, and the heights and widths of peaks in profiled deckboards, exposed them to the weather, and measured checking and cupping of boards. Profiling significantly reduced the numbers and sizes of checks in amabilis fir deckboards, but increased cupping. Profiles with narrow grooves and tall peaks were generally better at restricting checking than profiles with wide grooves and shorter peaks. Our results suggest that one of the profiles we tested would be better at restricting checking than profiles used previously to manufacture profiled decking from amabilis fir. We conclude that the surface checking of profiled amabilis fir decking can be significantly reduced by altering the geometry of surface profiles. In principal, the same approach could be used with other softwood species that have potential to capture a share of the large and important market for wood decking. View Full-Text
Keywords: wood; amabilis fir; decking; profiling; checking; cupping; confocal profilometry wood; amabilis fir; decking; profiling; checking; cupping; confocal profilometry

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Cheng, K.J.; Evans, P.D. Manufacture of Profiled Amabilis Fir Deckboards with Reduced Susceptibility to Surface Checking. J. Manuf. Mater. Process. 2018, 2, 7.

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J. Manuf. Mater. Process. EISSN 2504-4494 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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