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
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 (en)
GB (1) GB1244699A (en)
SE (1) SE348558B (en)

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 (en) * 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 (en) 1996-06-17 1999-10-25 Dynalyse Ab Method and apparatus for destructive classification of preferably elongated and / or disc-shaped objects
AU780469B2 (en) * 1998-02-25 2005-03-24 Weyerhaeuser Company Unfinished wood product cutting optimization system
US6026689A (en) * 1998-02-25 2000-02-22 Weyerhaeuser Company Log cutting optimization system
US6769306B2 (en) 1998-12-17 2004-08-03 Carter Holt Harvey Limited Log cutting procedures
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
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
NZ527569A (en) * 2001-01-31 2005-11-25 Univ Michigan Tech 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 (en) * 2003-12-03 2007-06-21 Abb Patent Gmbh Mass flow meter
EA011414B1 (en) * 2005-07-15 2009-02-27 А-Сорт Аб Means and method for classifying logs
FR2967492B1 (en) * 2010-11-17 2013-03-01 Innodura METHOD AND DEVICE FOR NON-DESTRUCTIVE DETERMINATION OF THE BREAKING MODULE OF A WOODEN PIECE
RU2627852C2 (en) * 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) Visualization and quantification technique of wood and timber-based materials shape memory effect

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 (en) 1972-09-04
GB1244699A (en) 1971-09-02

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