Investigation of microcracks in wood with laser speckle intensity

Paul Wahl, Antti Hanhijärvi, Raimo Silvennoinen

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

Microcracking of wood caused by drying was investigated by detecting the intensity variations of a speckle pattern induced by a focused laser beam scattered from the surface. Two trials were carried out to test the usefulness of this method. The trials were used to compare the severity of different drying treatments and to follow the development of cracking during drying. The data gathered from these experiments revealed clear correlation between the amount of cracking on a wood surface and severity of the drying treatment. Furthermore, an increase in the amount of cracks was observed as drying proceeds.
Original languageEnglish
Pages (from-to)788-792
Number of pages5
JournalOptical Engineering
Volume40
Issue number5
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

Fingerprint

microcracks
Microcracks
Speckle
drying
Wood
Drying
Lasers
lasers
Microcracking
speckle patterns
Laser beams
cracks
laser beams
Cracks
Experiments

Keywords

  • laser speckle
  • microcracks
  • damage in dried wood
  • optical metrology

Cite this

Wahl, Paul ; Hanhijärvi, Antti ; Silvennoinen, Raimo. / Investigation of microcracks in wood with laser speckle intensity. In: Optical Engineering. 2001 ; Vol. 40, No. 5. pp. 788-792.
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Wahl, P, Hanhijärvi, A & Silvennoinen, R 2001, 'Investigation of microcracks in wood with laser speckle intensity', Optical Engineering, vol. 40, no. 5, pp. 788-792. https://doi.org/10.1117/1.1358297

Investigation of microcracks in wood with laser speckle intensity. / Wahl, Paul; Hanhijärvi, Antti; Silvennoinen, Raimo.

In: Optical Engineering, Vol. 40, No. 5, 2001, p. 788-792.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Investigation of microcracks in wood with laser speckle intensity

AU - Wahl, Paul

AU - Hanhijärvi, Antti

AU - Silvennoinen, Raimo

PY - 2001

Y1 - 2001

N2 - Microcracking of wood caused by drying was investigated by detecting the intensity variations of a speckle pattern induced by a focused laser beam scattered from the surface. Two trials were carried out to test the usefulness of this method. The trials were used to compare the severity of different drying treatments and to follow the development of cracking during drying. The data gathered from these experiments revealed clear correlation between the amount of cracking on a wood surface and severity of the drying treatment. Furthermore, an increase in the amount of cracks was observed as drying proceeds.

AB - Microcracking of wood caused by drying was investigated by detecting the intensity variations of a speckle pattern induced by a focused laser beam scattered from the surface. Two trials were carried out to test the usefulness of this method. The trials were used to compare the severity of different drying treatments and to follow the development of cracking during drying. The data gathered from these experiments revealed clear correlation between the amount of cracking on a wood surface and severity of the drying treatment. Furthermore, an increase in the amount of cracks was observed as drying proceeds.

KW - laser speckle

KW - microcracks

KW - damage in dried wood

KW - optical metrology

U2 - 10.1117/1.1358297

DO - 10.1117/1.1358297

M3 - Article

VL - 40

SP - 788

EP - 792

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JF - Optical Engineering

SN - 0091-3286

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