Australian Quinoa Industry RD&E Plan 2024-2029
Quinoa (Chenopodium quinoa) is an ‘ancient grain’ that was domesticated about 8,000 years ago in South America, where it became an important part of Andean...
Prediction of Eucalyptus dunnii and Pinus radiata Timber Stiffness Using Acoustics
121 pages
Published: 1 Jan 2004
Author(s): Joe, Bill, Dickson, Ross, Raymond, Carolyn, ., Jugo L
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Increasing the recovery of high grade material is a primary objective of improving the
profitability of growing trees for sawn products. Stiffness is the major basis of machine
stress grading of sawn timber, and has a major influence on price. It is not a parameter,
however, that is readily measured in logs or standing trees. Derivation of a surrogate
indicator for stiffness would facilitate more effective planning and permit effective log
sorting, while also providing a valuable tool for breeders and silviculturists working with
standing trees.
This study examined the relationship between stiffness and acoustic properties measured
with a variety of stress wave timer tools, for both Eucalyptus dunnii and Pinus radiata.
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