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    Volume 48, Issue 4 (July 2020)

    Neutral Axis in Thermally Modified Timber Determined by Image-Based Approach

    (Received 1 September 2017; accepted 14 June 2018)

    Published Online: 2018

    CODEN: JTEVAB

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    Abstract

    An alternative assessment procedure for the mechanical performance of thermally modified timber is presented. Non-defect beech wood (Fagus sylvatica L.) specimens were thermally modified at 180°C and 200°C and subjected to static three-point bending load. Based on the full-field strain data acquired during the tests, the neutral axis (NA) at a 50 % level of maximal loading force was identified and localized within the specimen height by means of image processing methods. The NA in specimens mildly thermally modified moved toward the tensile zone when compared to the control specimens, whereas the position of NA within the specimens severely thermally modified was comparable with the NA position in control specimens. The proposed procedure proved to be applicable for the assessment of the mechanical performance; however, in the present study, the NA movements caused by thermal modification were not found to be statistically significant.

    Author Information:

    Brabec, Martin
    Department of Wood Science, Mendel University in Brno, Brno,

    Milch, Jaromír
    Department of Wood Science, Mendel University in Brno, Brno,

    Čermák, Petr
    Department of Wood Science, Mendel University in Brno, Brno,

    Děcký, David
    Department of Wood Science, Mendel University in Brno, Brno,

    Sebera, Václav
    Department of Wood Science, Mendel University in Brno, Brno,

    Tippner, Jan
    Department of Wood Science, Mendel University in Brno, Brno,


    Stock #: JTE20170515

    ISSN:0090-3973

    DOI: 10.1520/JTE20170515

    Author
    Title Neutral Axis in Thermally Modified Timber Determined by Image-Based Approach
    Symposium ,
    Committee D07