Parameters of wood welding: A study with infrared thermography
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Christelle Ganne-Chédeville
Abstract
Welding of wood is a well-known joining procedure that offers several advantages over traditional mechanical fasteners or gluing. During welding, extensive solid-state transformation phases occur in the so-called melting zone and the heat-affected zone. The nature and the extension of such transformations are correlated to the energy input and thus to the heat generated during the process at the wood joint interface. In the present work the influence of the welding parameters and wood grain orientation on the temperature profile and distribution and final strength of welded connections was investigated. For this purpose, the characteristics of the joints were evaluated with both destructive and non-destructive techniques. Non-destructive evaluation was performed with infrared thermography, which allowed measurement of the maximal and average peak temperature, temperature profile and distribution, and rate of temperature increase. Thus, this technique can also be used to detect welding defects and to provide information on material modification during welding.
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©2006 by Walter de Gruyter Berlin New York
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- Upgrading of paper-grade pulps to dissolving pulps by nitren extraction: Optimisation of extraction parameters and application to different pulps
- De-esterification and sulfonation in spruce CTMP: Effects on pulp and paper properties
- The nature of chromophores in high-extractives mechanical pulps: Western red cedar (Thuja plicata Donn) chemithermomechanical pulp (CTMP)
- On the relationship between fibre length, cellulose chain length and pulp viscosity of a softwood sulfite pulp
- The formation of aromatic end group structures in O-alkyl substituted celluloses under alkaline pulping conditions
- Kraft pulp from budworm-infested Jack pine
- Elucidation of the structure of cellulolytic enzyme lignin
- Effect of acetyl groups on enzymatic hydrolysis of cellulosic substrates
- NIR PLSR results obtained by calibration with noisy, low-precision reference values: Are the results acceptable?
- The hydration of paper studied with solid-state magnetisation-exchange 1H NMR spectroscopy
- Impact of drying temperature and pressing time factor on VOC emissions from OSB made of Scots pine
- Factors influencing timber gluability with one-part polyurethanes – studied with nine Australian timber species
- Mechanical characterisation of wood-adhesive interphase cell walls by nanoindentation
- Parameters of wood welding: A study with infrared thermography
- Polycarboxylic acids as non-formaldehyde anti-swelling agents for wood
- Influence of variation in modulus of elasticity on creep of wood during changing process of moisture
- Permeability changes in heartwood of Picea abies and Abies alba induced by incubation with Physisporinus vitreus
- Combined effect of boron compounds and heat treatments on wood properties: Boron release and decay and termite resistance
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