Results 111 to 120 of about 2,026 (144)

Wood-dowel rotation welding – a heat-transfer model

Journal of Adhesion Science and Technology, 2007
The relationship between temperature, time of friction and thermal flux for high-speed rotational wood-dowel welding has been modelled through a heat-transfer model. It was shown that the interface temperature could be estimated as a function of the friction time by the general equation T0 = Ti + 2βuτ√α/h√π √t, where T0 - temperature at the welding ...
Antonio Pizzi, A Zoulalian
exaly   +3 more sources

Wood–bamboo–wood laminated composite lumber jointed by linear vibration–friction welding

European Journal of Wood and Wood Products, 2013
The linear vibration-friction welding offers several advantages compared to traditional mechanical fasteners or gluing. This study examines the possibility of applying mechanically-induced vibration welding to the joining procedure of a wood-bamboo sandwich-laminated composite. The result shows that average tensile strength values of the composites can
Antonio Pizzi, Pizzi A
exaly   +2 more sources

Welding of wood, a new challenge for the wood industry

2004
In the years 2001/04 the HSB, R+D department has been investigating possible alternatives to traditional gluing processes. The objective of the project was the development of an innovative gluing and assembling process that would be applicable both economically and qualitatively in an industrial production. This research work, led to the discovery that
Properzi, Milena, Wieland, Stephanie, Pichelin, Frédéric, Gfeller, B.   +3 more
openaire   +1 more source

Emission Gases in Linear Vibration Welding of Wood

Journal of Adhesion Science and Technology, 2009
Analysis of the gases, vapour and degradation volatiles emitted as smoke from the welding interface during linear vibration welding of beech and oak woods has shown that the compounds in such a smoke are water vapour, CO2, and degradation compounds from wood polymeric carbohydrates as well as from amorphous lignin. For the two hardwoods tested the main
Omrani, P., Masson, E., Pizzi, Antonio, Mansouri, H.R.   +3 more
openaire   +3 more sources

Wood joints and laminated wood beams assembled by mechanically-welded wood dowels

Journal of Adhesion Science and Technology, 2007
Dowel welding by high-speed rotation was used to join two wood blocks and strong joints were obtained. Dowel angle to the surface of the wood blocks to be joined had a marked influence on the mechanical performance of the joint. When the dowel was inserted at 90° to the substrate, the dowel was subjected to and resisted a shear force only.
Bocquet, Jean-François, Pizzi, Antonio, Despres, Aurélien, Mansouri, Hamid Reza, Resch, Ludovic, Michel, D., Letort, L.   +6 more
openaire   +2 more sources

Development of an automated wood welding process

Journal of Adhesion Science and Technology, 2014
Friction welding of wood is an active field of research and would seem to be a potential joining technology in wood industries in the near future. Despite numerous scientific publications in this field, automated industrial applications of this technique are not common up to now.
M. Ebner, A. Petutschnigg, T. Schnabel, B. Sternad, A. Huskic, K. Gaubinger   +5 more
openaire   +1 more source

Wood welding: Chemical and physical changes according to the welding time

2008
Wood welding using linear friction is a technique that has been developed in the past five years. The goal of this study was to analyze the microstructure development in the interphase enabling the wood-to-wood adhesion without any adhesive. Chemical and physical analyses have been carried out using infrared ther- mography, mechanical shear tests ...
Ganne-Chédeville, Christelle, Properzi, M., Leban, J M, Pizzi, A., Pichelin, Frédéric   +4 more
openaire   +1 more source

Welding-through doweling of wood panels

Holz als Roh- und Werkstoff, 2006
Panel products have been joined to levels satisfying the requirements of the relevant standards for metallic connector assemblies by rotation welding of beech dowels through them. The wood panels substrates such as particleboard, OSB and MDF welded to the dowels almost as well as solid timber.
Resch, L., Despres, Aurélien, Pizzi, Antonio, Bocquet, Jean-François, Leban, Jean-Michel   +4 more
openaire   +2 more sources

Joining of wood layers by friction welding

Journal of Adhesion Science and Technology, 2005
A welding technique has been developed to join wooden work pieces by frictional heat without any wood glue. During the welding process 'melting' of the surfaces, resulting from the influence of pressure and frictional heat, was observed. Solidification and bond formation between the welded pieces happened during cool down of the heat-affected zone. The
B. Stamm, J. Natterer, P. Navi
openaire   +1 more source

Welding of modified beech wood

2011
Wood welding is a mechanical, physical and chemical process during which melt is produced, which then turns into a solid joint after cooling. The paper shows current world-wide knowledge on welding of modified wood while the results of wood welding were received from the Faculty of Forestry in Zagreb.
Grbac, Ivica, Župčić, Ivica
openaire   +2 more sources