Waratah Nz Limited

Paul Gamble

Alex James Stevenson

Douglas Craig Swinyard

Brett James Kaye

Eugene Stytsenko

Paul David Harris

Frederic Lecarpentier

Michael Kenneth Andrews

Russell John Petherick

Eberhard Juergen Deuss

Francis Collier

A method and apparatus for determining a characteristic, such as the stiffness, of a portion of a wood specimen characterised by the steps of a) producing an acoustic signal in the wood specimen part way along the length of the wood specimen, and b) sensing a response in the wood specimen part way along the length of the wood specimen including a reverberation from a first end of the wood specimen, and c) calculating a characteristic of a portion of the wood specimen from analysis of the sensed response. A related method and apparatus may be used to determine a characteristic of a portion of a tree stem during harvesting of a tree and the characteristic used to optimise the value of a log cut from the stem.

Method and apparatus for assessing or predicting the characteristics of wood

Growing community of inventors

Taupo, New Zealand

Paul Gamble