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 characteristicsInfo
- 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
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.
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)
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 |
-
1999
- 1999-08-24 NZ NZ33152799A patent/NZ331527A/en not_active IP Right Cessation
Cited By (2)
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 |