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Assessment of glued timber integrity by limited-angle microfocus X-ray computed tomography = Detektion von Fehlverklebungen in Holzbauteilen mittels Mikrofokus Röntgen-Computertomographie

Sanabria, Sergio ; Wyss, Peter ; Neuenschwander, Juerg ; Niemz, Peter ; Sennhauser, Urs

In: European Journal of Wood and Wood Products, 2011, vol. 69, no. 4, p. 605-617

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    Titre
    • Assessment of glued timber integrity by limited-angle microfocus X-ray computed tomography
    Titre traduit ()
    • Detektion von Fehlverklebungen in Holzbauteilen mittels Mikrofokus Röntgen-Computertomographie
    Auteur
    • Sanabria, Sergio. Electronics/Metrology/Reliability Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600, Duebendorf, Switzerland
    • Wyss, Peter. Electronics/Metrology/Reliability Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600, Duebendorf, Switzerland
    • Neuenschwander, Juerg. Electronics/Metrology/Reliability Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600, Duebendorf, Switzerland
    • Niemz, Peter. Institute for Building Materials, Wood Physics, ETH Zurich, Zurich, Switzerland
    • Sennhauser, Urs. Electronics/Metrology/Reliability Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600, Duebendorf, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • European Journal of Wood and Wood Products, 2011, vol. 69, no. 4, p. 605-617. Springer-Verlag
    Autre version électronique
    Classification
    • Technologie, Sciences de l'ingénieur
    Identifiant OAI-PMH
    • oai:doc.rero.ch:318961
    Summary
    Glued timber products have an extensive range of applications in construction. In this work a Microfocus X-ray Computed Tomography method was developed to inspect gluing defects in timber samples and was applied successfully on experimental data. The bonding plane was segmented into glued and non-glued regions and imaged with 5mm resolution. Moreover, the gap topology between timber lamellas was precisely characterised. Alimited-angle reconstruction with anisotropic frame binning together with a specific glue line readout method efficiently filters out undesired wood structure highlighting the information of the adhesive joint. This method imposes limitations on the size of the specimen in only one dimension. The presence and absence of glue could be detected for glue line thicknesses over 50μm and air gaps larger than 150μm could be characterised. Several information reduction approaches were combined in the reconstruction process to implement the assessment of a 100×100mm2 bonding plane in less than 40s