NO20004275L - Ultrasonic device for characterizing elements of wood, by Õ measured wave distortion - Google Patents

Ultrasonic device for characterizing elements of wood, by Õ measured wave distortion

Info

Publication number
NO20004275L
NO20004275L NO20004275A NO20004275A NO20004275L NO 20004275 L NO20004275 L NO 20004275L NO 20004275 A NO20004275 A NO 20004275A NO 20004275 A NO20004275 A NO 20004275A NO 20004275 L NO20004275 L NO 20004275L
Authority
NO
Norway
Prior art keywords
wood
ultrasonic device
wave distortion
measured wave
characterizing elements
Prior art date
Application number
NO20004275A
Other languages
Norwegian (no)
Other versions
NO20004275D0 (en
Inventor
Mark E Schafer
Robert J Ross
Original Assignee
Perceptron Inc
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
Priority claimed from US09/151,432 external-priority patent/US6029522A/en
Priority claimed from US09/196,674 external-priority patent/US6092418A/en
Priority claimed from US09/197,165 external-priority patent/US6295907B1/en
Application filed by Perceptron Inc filed Critical Perceptron Inc
Publication of NO20004275D0 publication Critical patent/NO20004275D0/en
Publication of NO20004275L publication Critical patent/NO20004275L/en

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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2493—Wheel shaped probes
    • 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
    • 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
    • G01N2291/0422—Shear waves, transverse waves, horizontally polarised waves
    • 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
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
    • 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
    • G01N2291/048—Transmission, i.e. analysed material between transmitter and receiver
    • 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
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
    • 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
    • G01N2291/10—Number of transducers
    • G01N2291/103—Number of transducers one emitter, two or more receivers
    • 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
    • G01N2291/10—Number of transducers
    • G01N2291/105—Number of transducers two or more emitters, two or more receivers
    • 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
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2634—Surfaces cylindrical from outside

Landscapes

  • Physics & Mathematics (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)

Abstract

Ultralydteknikk anvendes på målingen av treelement (10) for å identifisere lokale uregelmessigheter i treelementets (10) indre, som hovedsakelig er mindre enn den fulle bredden til ultralydstrålen (48).Ultrasound technique is applied to the measurement of wood element (10) to identify local irregularities in the interior of the wood element (10), which are substantially smaller than the full width of the ultrasonic beam (48).

NO20004275A 1998-02-26 2000-08-25 Ultrasonic device for characterizing elements of wood, by Õ measured wave distortion NO20004275L (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US7609098P 1998-02-26 1998-02-26
US8201298P 1998-04-16 1998-04-16
US8201898P 1998-04-16 1998-04-16
US09/151,432 US6029522A (en) 1998-02-26 1998-09-11 Ultrasonic apparatus for characterizing wooden members
US09/196,674 US6092418A (en) 1998-04-16 1998-11-20 Method and apparatus for detecting and characterizing splits in logs
US09/197,165 US6295907B1 (en) 1998-04-16 1998-11-20 Method and apparatus for on-line monitoring of log sawing
PCT/US1999/003919 WO1999044049A1 (en) 1998-02-26 1999-02-23 Ultrasonic apparatus for characterizing wooden members using a measurement of wave distortion

Publications (2)

Publication Number Publication Date
NO20004275D0 NO20004275D0 (en) 2000-08-25
NO20004275L true NO20004275L (en) 2000-10-18

Family

ID=27557134

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20004275A NO20004275L (en) 1998-02-26 2000-08-25 Ultrasonic device for characterizing elements of wood, by Õ measured wave distortion

Country Status (6)

Country Link
EP (1) EP1057011A4 (en)
AU (1) AU754908B2 (en)
CA (1) CA2321576C (en)
NO (1) NO20004275L (en)
NZ (1) NZ506565A (en)
WO (1) WO1999044049A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118013238B (en) * 2024-04-09 2024-06-21 西安思坦仪器股份有限公司 External ultrasonic flow measurement device and method for intelligent injection and production of oil-water well

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013257A (en) * 1983-07-04 1985-01-23 Fujikura Ltd Ultrasonic diagnosis
US5024091A (en) * 1986-03-25 1991-06-18 Washington State University Research Foundation, Inc. Non-destructive evaluation of structural members
GB8622731D0 (en) * 1986-09-20 1986-10-29 Bio Kil Chemicals Ltd Testing timbers
US5097881A (en) * 1991-04-25 1992-03-24 Blount, Inc. Ultrasonic log grading
US5237870A (en) * 1991-09-20 1993-08-24 Metriguard Inc. Stress wave method and apparatus for estimating the structural quality of finger joints
US5804728A (en) * 1994-09-07 1998-09-08 The Regents Of The University Of California Method and apparatus for non-intrusively detecting hidden defects caused by bio-deterioration in living trees and round wood materials

Also Published As

Publication number Publication date
CA2321576C (en) 2007-12-04
EP1057011A1 (en) 2000-12-06
NZ506565A (en) 2002-10-25
CA2321576A1 (en) 1999-09-02
EP1057011A4 (en) 2003-08-13
AU2783299A (en) 1999-09-15
WO1999044049A1 (en) 1999-09-02
NO20004275D0 (en) 2000-08-25
AU754908B2 (en) 2002-11-28

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application