WO2010046692A3 - Non- destructive method for determining the moisture content in a hygroscopic material - Google Patents

Non- destructive method for determining the moisture content in a hygroscopic material Download PDF

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Publication number
WO2010046692A3
WO2010046692A3 PCT/GB2009/051407 GB2009051407W WO2010046692A3 WO 2010046692 A3 WO2010046692 A3 WO 2010046692A3 GB 2009051407 W GB2009051407 W GB 2009051407W WO 2010046692 A3 WO2010046692 A3 WO 2010046692A3
Authority
WO
WIPO (PCT)
Prior art keywords
moisture content
hygroscopic material
determining
destructive method
measurements
Prior art date
Application number
PCT/GB2009/051407
Other languages
French (fr)
Other versions
WO2010046692A2 (en
Inventor
Daniel James Ridley-Ellis
John Robert Moore
Andrew Jamie Lyon
Original Assignee
The Court Of Edinburgh Napier University
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 The Court Of Edinburgh Napier University filed Critical The Court Of Edinburgh Napier University
Publication of WO2010046692A2 publication Critical patent/WO2010046692A2/en
Publication of WO2010046692A3 publication Critical patent/WO2010046692A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/46—Wood
    • 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
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • 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
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/011—Velocity or travel time
    • 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
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02845—Humidity, wetness
    • 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
    • G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Method and apparatus for the determination of moisture content in a hygroscopic material. Measurements of parameters such as the modulus of elasticity and the time of flight, are recorded on the material using two methods of measurement. The two methods are each affected differently by moisture content. The moisture content is derivable by taking a ratio of the measurements with a factor to account for the species or type of hygroscopic material. A non-destructive method for determining the absolute moisture content in wood,which provides measurements above the fibre saturation point, is described.
PCT/GB2009/051407 2008-10-22 2009-10-20 Non- destructive method for determining the moisture content in a hygroscopic material WO2010046692A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0819314.6 2008-10-22
GB0819314A GB0819314D0 (en) 2008-10-22 2008-10-22 Non-destructive method for determining the moisture content in a hygroscopic material

Publications (2)

Publication Number Publication Date
WO2010046692A2 WO2010046692A2 (en) 2010-04-29
WO2010046692A3 true WO2010046692A3 (en) 2010-07-29

Family

ID=40097793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/051407 WO2010046692A2 (en) 2008-10-22 2009-10-20 Non- destructive method for determining the moisture content in a hygroscopic material

Country Status (2)

Country Link
GB (1) GB0819314D0 (en)
WO (1) WO2010046692A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104090029B (en) * 2014-07-24 2016-06-22 中国计量学院 The in-situ measuring method of soil shear strength and long-range real-time automatic measuring system thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077669A1 (en) * 2000-04-12 2001-10-18 Carter Holt Harvey Limited A method of estimating timber stiffness profiles
WO2007011296A1 (en) * 2005-07-15 2007-01-25 A-Sort Ab Means and method for classifying logs
WO2008074929A1 (en) * 2006-12-21 2008-06-26 Tecsan Sarl Method and device for determining the quality of a hygroscopic material and for classifying and sorting it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001077669A1 (en) * 2000-04-12 2001-10-18 Carter Holt Harvey Limited A method of estimating timber stiffness profiles
WO2007011296A1 (en) * 2005-07-15 2007-01-25 A-Sort Ab Means and method for classifying logs
WO2008074929A1 (en) * 2006-12-21 2008-06-26 Tecsan Sarl Method and device for determining the quality of a hygroscopic material and for classifying and sorting it

Also Published As

Publication number Publication date
GB0819314D0 (en) 2008-11-26
WO2010046692A2 (en) 2010-04-29

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