CA918286A - Non-destructive method of grading wood materials - Google Patents

Non-destructive method of grading wood materials

Info

Publication number
CA918286A
CA918286A CA060302A CA60302A CA918286A CA 918286 A CA918286 A CA 918286A CA 060302 A CA060302 A CA 060302A CA 60302 A CA60302 A CA 60302A CA 918286 A CA918286 A CA 918286A
Authority
CA
Canada
Prior art keywords
wood materials
destructive method
grading
grading wood
destructive
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA060302A
Other languages
English (en)
Inventor
L. Galligan William
F. Pellerin Roy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Washington State University Research Foundation
Original Assignee
Washington State University Research Foundation
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 Washington State University Research Foundation filed Critical Washington State University Research Foundation
Application granted granted Critical
Publication of CA918286A publication Critical patent/CA918286A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0238—Wood
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0421—Longitudinal waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
CA060302A 1968-09-13 1969-08-25 Non-destructive method of grading wood materials Expired CA918286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75954268A 1968-09-13 1968-09-13

Publications (1)

Publication Number Publication Date
CA918286A true CA918286A (en) 1973-01-02

Family

ID=25056047

Family Applications (1)

Application Number Title Priority Date Filing Date
CA060302A Expired CA918286A (en) 1968-09-13 1969-08-25 Non-destructive method of grading wood materials

Country Status (3)

Country Link
CA (1) CA918286A (https=)
GB (1) GB1244699A (https=)
SE (1) SE348558B (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838085A (en) * 1986-03-25 1989-06-13 Washington State University Research Foundation, Inc. Methods and appartaus for non-destructing evaluation of the mechanical properties of composite materials
US5024091A (en) * 1986-03-25 1991-06-18 Washington State University Research Foundation, Inc. Non-destructive evaluation of structural members
US5699274A (en) * 1995-11-16 1997-12-16 Timberco, Inc. Panel performance test system
US6053052A (en) * 1995-11-16 2000-04-25 Timberco, Inc. Panel performance test system

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI69680C (fi) * 1984-06-12 1986-03-10 Tampella Oy Ab Foerfarande foer optimering av bergborrning
US4845989A (en) * 1987-09-04 1989-07-11 Titlow Joseph D Method and apparatus for determining elastic constants in tubes
SE511602C2 (sv) * 1996-06-17 1999-10-25 Dynalyse Ab Förfarande jämte anordning för oförstörande klassificering av företrädesvis långsträckta och/eller skivformade objekt
US6026689A (en) * 1998-02-25 2000-02-22 Weyerhaeuser Company Log cutting optimization system
AU780469B2 (en) * 1998-02-25 2005-03-24 Weyerhaeuser Company Unfinished wood product cutting optimization system
NZ333434A (en) * 1998-12-17 1999-10-28 Carter Holt Harvey Ltd Determining log length by passing ultrasonic signal through log, and using length information to determining cut positions
US6769306B2 (en) 1998-12-17 2004-08-03 Carter Holt Harvey Limited Log cutting procedures
NZ503953A (en) * 2000-04-12 2002-12-20 Carter Holt Harvey Ltd Apparatus and method for estimating timber stiffness profiles of a log by determining the density profile of a cant
CA2436492A1 (en) * 2001-01-31 2002-08-08 Board Of Control Of Michigan Technological University System for and method of performing evaluation techniques on a log or round timber
US6598477B2 (en) 2001-10-31 2003-07-29 Weyerhaeuser Company Method of evaluating logs to predict warp propensity of lumber sawn from the logs
DE10356383B4 (de) * 2003-12-03 2007-06-21 Abb Patent Gmbh Coriolis-Massedurchflussmesser
EP1910820A1 (en) * 2005-07-15 2008-04-16 A-Sort AB Means and method for classifying logs
FR2967492B1 (fr) * 2010-11-17 2013-03-01 Innodura Procede et dispositif de determination non destructive du module de rupture d'une piece en bois
RU2627852C2 (ru) * 2015-10-15 2017-08-14 федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) Способ визуализации и квантификации эффекта памяти формы древесины и древесных материалов

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838085A (en) * 1986-03-25 1989-06-13 Washington State University Research Foundation, Inc. Methods and appartaus for non-destructing evaluation of the mechanical properties of composite materials
US5024091A (en) * 1986-03-25 1991-06-18 Washington State University Research Foundation, Inc. Non-destructive evaluation of structural members
US5699274A (en) * 1995-11-16 1997-12-16 Timberco, Inc. Panel performance test system
US6053052A (en) * 1995-11-16 2000-04-25 Timberco, Inc. Panel performance test system

Also Published As

Publication number Publication date
SE348558B (https=) 1972-09-04
GB1244699A (en) 1971-09-02

Similar Documents

Publication Publication Date Title
CA918286A (en) Non-destructive method of grading wood materials
CA940732A (en) Testing and grading of timber
CS188102B2 (en) Method of wood-fibre material
CA939008A (en) Non-destructive testing apparatus for ferromagnetic materials
CA999428A (en) Method and device for measuring thickness of pieces of timber
AU430463B2 (en) Non-destructive method of grading wood materials
AU6005169A (en) Non-destructive method of grading wood materials
CA947825A (en) Welding method and materials
CA942555A (en) Development method and materials
CA703227A (en) Method and composition for non-destructive analysis
CA718195A (en) Non-destructive strength test of structural lumber
CA779190A (en) Thick fibreboard and method of making same
CA793545A (en) Timber grading
CA980187A (en) Method for the fire-inhibiting impregnation of wood and apparatus for carrying out the method
CA801392A (en) Methods of and systems for effecting the nondestructive analysis of materials
CA797168A (en) Diazotype materials and method
AU435135B2 (en) Method and apparatus for dehydrating materials
CA801387A (en) Methods of and apparatus for measuring the hardness of materials
CA790460A (en) Apparatus for and method of blending dry materials
CA715777A (en) Method of inspection
CA831952A (en) Method and apparatus for manufacture of laminated objects comprised of wood and similar vegetable fibrous materials
CA795419A (en) Radiographic nondestructive testing method
AU3703168A (en) Method of joining polyglycolmethacrylates together with other materials
AU416546B2 (en) Method of and means for the communition of particulate solid materials
CA814541A (en) Nondestructive tester