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NZ331527A - Acoustic wave testing of logs for selection of wood based on fibre characteristics - Google Patents

Acoustic wave testing of logs for selection of wood based on fibre characteristics

Info

Publication number
NZ331527A
NZ331527A NZ33152799A NZ33152799A NZ331527A NZ 331527 A NZ331527 A NZ 331527A NZ 33152799 A NZ33152799 A NZ 33152799A NZ 33152799 A NZ33152799 A NZ 33152799A NZ 331527 A NZ331527 A NZ 331527A
Authority
NZ
New Zealand
Prior art keywords
wood
fibre
velocity
logs
selection
Prior art date
Application number
NZ33152799A
Inventor
Denis John Albert
John Corrie Fleming Walker
Ross Lindsay Dickson
Thomas Alan Clark
Original Assignee
Carter Holt Harvey Ltd
Canterprise Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carter Holt Harvey Ltd, Canterprise Ltd filed Critical Carter Holt Harvey Ltd
Priority to NZ33152799A priority Critical patent/NZ331527A/en
Publication of NZ331527A publication Critical patent/NZ331527A/en

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

A method for predictively assessing one or more characteristics of wood fibre or wood pulp produced from solid wood is disclosed. The method includes determining the velocity of sound through the solid wood and assessing characteristics(s) of wood fibre or wood pulp produced from the wood by reference to the velocity through the solid wood. An apparatus for carrying the method is also claimed. The apparatus includes sensing mean capable of detecting the velocity of a sound wave through the length of wood and computer processing means comprising stored information on fibre characteristic(s) versus sound velocity through wood and arranged to determine the fibre characteristic(s) for the wood by reference to the stored information on fibre characteristics versus velocity through the wood.
NZ33152799A 1999-08-24 1999-08-24 Acoustic wave testing of logs for selection of wood based on fibre characteristics NZ331527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ33152799A NZ331527A (en) 1999-08-24 1999-08-24 Acoustic wave testing of logs for selection of wood based on fibre characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ33152799A NZ331527A (en) 1999-08-24 1999-08-24 Acoustic wave testing of logs for selection of wood based on fibre characteristics

Publications (1)

Publication Number Publication Date
NZ331527A true NZ331527A (en) 2000-03-27

Family

ID=19926897

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ33152799A NZ331527A (en) 1999-08-24 1999-08-24 Acoustic wave testing of logs for selection of wood based on fibre characteristics

Country Status (1)

Country Link
NZ (1) NZ331527A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6813927B1 (en) 1999-07-30 2004-11-09 Carter Holt Harvey Limited Log testing apparatus
US7603904B2 (en) 2005-02-11 2009-10-20 Waratah Nz Limited Method and apparatus for assessing or predicting the characteristics of wood

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6813927B1 (en) 1999-07-30 2004-11-09 Carter Holt Harvey Limited Log testing apparatus
US7603904B2 (en) 2005-02-11 2009-10-20 Waratah Nz Limited Method and apparatus for assessing or predicting the characteristics of wood

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Legal Events

Date Code Title Description
RENW Renewal (renewal fees accepted)
RENW Renewal (renewal fees accepted)
ASS Change of ownership

Owner name: FIBRE-GEN INSTRUMENTS LIMITED, NZ

Free format text: OLD OWNER(S): CARTER HOLT HARVEY LIMITED

RENW Renewal (renewal fees accepted)
RENW Renewal (renewal fees accepted)
EXPY Patent expired