X-ray microdensitometry analysis of vibration-welded wood

Leban, J.-M.; Pizzi, A.; Wieland, S.; Zanetti, M.; Properzi, M.; Pichelin, Frédéric (2004). X-ray microdensitometry analysis of vibration-welded wood Journal of Adhesion Science and Technology, 18(6), pp. 673-685. Taylor & Francis 10.1163/156856104839310

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X-ray microdensitometry tests on vibration-welded hardwoods (beech and oak) and a softwood (spruce) showed that adhesion of wood surfaces by vibration welding was accompanied by a considerable increase in the density of the wood at the bonded interface. This is due to the loss of the intercellular structure of the wood at the interface and considerable decrease of empty spaces in its cellular structure. The sharper and more regular is the increase in density at the interface the better is the mechanical performance of the joint. This was ascribed to the marked difference in wood density between earlywood and latewood. This intra-ring wood heterogeneity is a limiting factor for reaching high local compression rates during the welding process. In the case of spruce wood it causes cells collapse and, consequently, poorer bonding. Absolute and relative density maps of well-bonded, poorly-bonded and unbonded joints are reported. X-ray microdensitometry proved to be a valuable technique to determine the extent of wood welding.

Item Type:

Journal Article (Original Article)

Division/Institute:

BFH Zentren > BFH Zentrum Holz - Ressource und Werkstoff
Department of Architecture, Wood and Civil Engineering
Department of Architecture, Wood and Civil Engineering > Bereich Forschung & Entwicklung, Dienstleistungen und Weiterbildung
Department of Architecture, Wood and Civil Engineering > Bereich Forschung & Entwicklung, Dienstleistungen und Weiterbildung > Institut für Werkstoffe und Holztechnologie

Name:

Leban, J.-M.; Pizzi, A.; Wieland, S.; Zanetti, M.; Properzi, M. and Pichelin, Frédéric

Subjects:

Q Science > Q Science (General)
T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)

ISSN:

0169-4243

Publisher:

Taylor & Francis

Language:

English

Submitter:

Sally Haddad

Date Deposited:

22 Apr 2020 14:44

Last Modified:

22 Apr 2020 14:44

Publisher DOI:

10.1163/156856104839310

Uncontrolled Keywords:

Wood welding Wood fusion Polymer melting Adhesives Lignin Joints X-ray microdensitometry

ARBOR DOI:

10.24451/arbor.11538

URI:

https://arbor.bfh.ch/id/eprint/11538

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