FI20150297A - Procedure for determining crack formation in wood - Google Patents

Procedure for determining crack formation in wood

Info

Publication number
FI20150297A
FI20150297A FI20150297A FI20150297A FI20150297A FI 20150297 A FI20150297 A FI 20150297A FI 20150297 A FI20150297 A FI 20150297A FI 20150297 A FI20150297 A FI 20150297A FI 20150297 A FI20150297 A FI 20150297A
Authority
FI
Finland
Prior art keywords
wood
procedure
crack formation
determining crack
determining
Prior art date
Application number
FI20150297A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI127964B (en
Inventor
Markku Tiitta
Laura Tomppo
Reijo Lappalainen
Original Assignee
Puumit Oy
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 Puumit Oy filed Critical Puumit Oy
Priority to FI20150297A priority Critical patent/FI127964B/en
Priority to PCT/FI2016/050737 priority patent/WO2017072405A1/en
Publication of FI20150297A publication Critical patent/FI20150297A/en
Application granted granted Critical
Publication of FI127964B publication Critical patent/FI127964B/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
    • G01N29/043—Analysing solids in the interior, e.g. by shear waves
    • 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
    • G01N29/225—Supports, positioning or alignment in moving situation
    • 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
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/27—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the material relative to a stationary sensor
    • 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
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • 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
    • G01N2291/025—Change of phase or condition
    • G01N2291/0256—Adsorption, desorption, surface mass change, e.g. on biosensors
    • 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
    • G01N2291/0289—Internal structure, e.g. defects, grain size, texture
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Wood Science & Technology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
FI20150297A 2015-10-26 2015-10-26 Method for quick sampling to determine crack formation in wood on a production line using contactless ultrasound FI127964B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20150297A FI127964B (en) 2015-10-26 2015-10-26 Method for quick sampling to determine crack formation in wood on a production line using contactless ultrasound
PCT/FI2016/050737 WO2017072405A1 (en) 2015-10-26 2016-10-19 Method for determining cracking of wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20150297A FI127964B (en) 2015-10-26 2015-10-26 Method for quick sampling to determine crack formation in wood on a production line using contactless ultrasound

Publications (2)

Publication Number Publication Date
FI20150297A true FI20150297A (en) 2017-04-27
FI127964B FI127964B (en) 2019-06-14

Family

ID=58629805

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20150297A FI127964B (en) 2015-10-26 2015-10-26 Method for quick sampling to determine crack formation in wood on a production line using contactless ultrasound

Country Status (2)

Country Link
FI (1) FI127964B (en)
WO (1) WO2017072405A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3047741A1 (en) 2018-07-12 2020-01-12 Boa-Franc S.E.N.C. Method of making wood flooring boards
WO2024056934A1 (en) * 2022-09-14 2024-03-21 Avant Wood Oy Method and apparatus for controlling a modification process of hygroscopic material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE388388T1 (en) * 1997-06-19 2008-03-15 Mahesh C Bhardwaj ULTRASONIC TRANSDUCER FOR HIGH TRANSDUCTION IN GASES AND METHOD FOR NON-CONTACT ULTRASONIC TRANSMISSION IN SOLID MATERIALS
US6684704B1 (en) * 2002-09-12 2004-02-03 Psiloquest, Inc. Measuring the surface properties of polishing pads using ultrasonic reflectance
FR2934686B1 (en) * 2008-08-01 2013-01-18 Eads Europ Aeronautic Defence METHOD AND DEVICE FOR NON - DESTRUCTIVE ULTRASONIC CONTROL WITH AIRCRAFT COUPLING OF A STRUCTURE.
US20140216158A1 (en) * 2011-08-17 2014-08-07 Sergio José Sanabria Martin Air coupled ultrasonic contactless method for non-destructive determination of defects in laminated structures

Also Published As

Publication number Publication date
WO2017072405A1 (en) 2017-05-04
FI127964B (en) 2019-06-14

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