Automated low energy photon absorption equipment for measuring internal moisture and density distributions of wood samples

Markku Tiitte, Hannu Olkkonen, Timo Lappalainen, Tapio Kanko

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Automated equipment for measuring the moisture and density distributions of wood samples was developed. Using a narrow beam of gamma rays, the equipment scans the wood samples, which are placed on the moving belt. The moisture measurement is based on the241Am photon absorption technique (59.5 keV), where the difference of the linear absorption coefficients of the moist and dry wood is measured. The method requires no knowledge of the thickness of the specimen. The density estimation method is based on the measurement of the linear attenuation coefficient of wood. Comprehensive software including image processing was developed for treatment of the numerical values of the measurements.

Original languageEnglish
Pages (from-to)417 - 421
Number of pages5
JournalHolz als Roh- und Werkstoff
Volume51
Issue number6
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

Fingerprint

measuring devices
Wood
Moisture
Photons
moisture
energy
sampling
belts (equipment)
absorption coefficient
estimation method
image processing
Gamma rays
gamma radiation
Image processing
methodology
image analysis
software
photons
distribution
measuring

Keywords

  • wood
  • timber
  • properties
  • moisture content
  • density
  • measurement
  • photons
  • absorption

Cite this

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title = "Automated low energy photon absorption equipment for measuring internal moisture and density distributions of wood samples",
abstract = "Automated equipment for measuring the moisture and density distributions of wood samples was developed. Using a narrow beam of gamma rays, the equipment scans the wood samples, which are placed on the moving belt. The moisture measurement is based on the241Am photon absorption technique (59.5 keV), where the difference of the linear absorption coefficients of the moist and dry wood is measured. The method requires no knowledge of the thickness of the specimen. The density estimation method is based on the measurement of the linear attenuation coefficient of wood. Comprehensive software including image processing was developed for treatment of the numerical values of the measurements.",
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author = "Markku Tiitte and Hannu Olkkonen and Timo Lappalainen and Tapio Kanko",
year = "1993",
doi = "10.1007/BF02628240",
language = "English",
volume = "51",
pages = "417 -- 421",
journal = "European Journal of Wood and Wood Products",
issn = "0018-3768",
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number = "6",

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Automated low energy photon absorption equipment for measuring internal moisture and density distributions of wood samples. / Tiitte, Markku; Olkkonen, Hannu; Lappalainen, Timo; Kanko, Tapio.

In: Holz als Roh- und Werkstoff, Vol. 51, No. 6, 1993, p. 417 - 421.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Automated low energy photon absorption equipment for measuring internal moisture and density distributions of wood samples

AU - Tiitte, Markku

AU - Olkkonen, Hannu

AU - Lappalainen, Timo

AU - Kanko, Tapio

PY - 1993

Y1 - 1993

N2 - Automated equipment for measuring the moisture and density distributions of wood samples was developed. Using a narrow beam of gamma rays, the equipment scans the wood samples, which are placed on the moving belt. The moisture measurement is based on the241Am photon absorption technique (59.5 keV), where the difference of the linear absorption coefficients of the moist and dry wood is measured. The method requires no knowledge of the thickness of the specimen. The density estimation method is based on the measurement of the linear attenuation coefficient of wood. Comprehensive software including image processing was developed for treatment of the numerical values of the measurements.

AB - Automated equipment for measuring the moisture and density distributions of wood samples was developed. Using a narrow beam of gamma rays, the equipment scans the wood samples, which are placed on the moving belt. The moisture measurement is based on the241Am photon absorption technique (59.5 keV), where the difference of the linear absorption coefficients of the moist and dry wood is measured. The method requires no knowledge of the thickness of the specimen. The density estimation method is based on the measurement of the linear attenuation coefficient of wood. Comprehensive software including image processing was developed for treatment of the numerical values of the measurements.

KW - wood

KW - timber

KW - properties

KW - moisture content

KW - density

KW - measurement

KW - photons

KW - absorption

U2 - 10.1007/BF02628240

DO - 10.1007/BF02628240

M3 - Article

VL - 51

SP - 417

EP - 421

JO - European Journal of Wood and Wood Products

JF - European Journal of Wood and Wood Products

SN - 0018-3768

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