Results 11 to 20 of about 2,026 (144)

Joining wood by friction welding [PDF]

open access: yesHolz als Roh- und Werkstoff, 2005
At the Chair of Timber Constructions of the Swiss Federal Institute of Technology in Lausanne (EPFL) tests were carried out to join wooden work pieces by friction welding without any additional welding deposit. It could be determined that this kind of technology, which is mainly used for thermoplastics and metal, can also be applied to wood. Tests were
Stamm, B., Natterer, Julius, Navi, P.
openaire   +3 more sources

Investigation and compare the tensile strength of hardwood dowel joints, made by glue and welding [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2017
The insertion of dowels into solid wood for furniture has been used for centuries. Recently, this simple technology has been upgraded. The objective of the research was to evaluate and compare the tensile strength of the joints made of wood dowel through
PANTEA OMRANI, Reza Eisapor
doaj   +1 more source

Welding of wood in the presence of wollastonite

open access: yesBioResources, 2020
The use of wollastonite as a natural additive for the welding of Scots pine improved the water resistance and shear strength of the welded joint. The X-ray computed tomography images revealed that the welding of Scots pine with wollastonite could postpone crack formation in the welded joints.
Mojgan Vaziri   +2 more
openaire   +1 more source

Rotational wood welding: Mechanical properties of thermally treated oak [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2022
The paper examined the strength of rotationally welded joints between untreated beech dowels and samples of thermally modified and unmodified oak wood (used as substrates). The results were compared with the control group where beech dowels were
Veizović Marko   +3 more
doaj   +1 more source

Influence of Various Wood Species and Cross-Sections on Strength of a Dowel Welding Joint

open access: yesDrvna Industrija, 2014
Rotation welding is a new method used in wood welding. Heat that develops due to the friction on contact surfaces softens and melts the wood structure (melt is produced).
Ivica Župčić   +3 more
doaj   +1 more source

Physical and calorific properties of wheat straw briquettes and pellets [PDF]

open access: yesMATEC Web of Conferences, 2019
Wheat straw briquettes are high performance combustible products obtained by densification from the wheat straw biomass without the use of additional adhesives or additives. The purpose of the paper is to analyze and to detail the physical properties (SR
Spirchez Cosmin   +3 more
doaj   +1 more source

Welding of thermally modified wood and thermal modification of the welded wood: Effects on the shear strength under climatic conditions [PDF]

open access: yesBioResources, 2021
This work investigated how thermal modification affects the shear strength of welded joints under different climatic conditions. The order of the thermal modification, before or after the welding, was investigated for its effect on the shear strength of the welded wood. Two groups of thermally modified specimens were prepared in a laboratory kiln under
Vaziri, Mojgan, Sandberg, Dick
openaire   +2 more sources

Influence of Biological Pretreatment of Wooden Dowels on Strength of Rotary Welded Joints

open access: yesBioResources, 2023
Welding wood achieves joints whose strength is comparable with the strength of glued joints. When welding, the top of the dowel is not welded because of the lack of melted lignin.
Ivica Župčić   +2 more
doaj   +2 more sources

Time trends in occupational exposure to chemicals in Sweden: proportion exposed, distribution across demographic and labor market strata, and exposure levels

open access: yesScandinavian Journal of Work, Environment & Health, 2022
OBJECTIVE: This study investigated time trends in occupational exposure to various chemicals in Sweden and the distribution across demographic and labor market sectors.
Per Gustavsson   +7 more
doaj   +1 more source

Evaluation of the interface of eucalyptus specimens welded by rotary friction

open access: yesMaderas: Ciencia y Tecnología, 2023
Rotary friction welding produces joints by inserting wood dowels, with a specific rotation and feed rate, into pre-drilled holes made in wood substrates.
Ana Carolina Costa Viana   +2 more
doaj   +1 more source

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