Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ingela Bjurhager"'
Scratch resistance of PEG-impregnated green wood: a method for evaluation of swollen wood properties
Autor:
Sabine Heinemann, Stefania Fortino, Jarkko Metsäjoki, Helena Ronkainen, Ingela Bjurhager, L. I. Salminen
Publikováno v:
Fortino, S, Metsäjoki, J, Ronkainen, H, Bjurhager, I, Heinemann, S & Salminen, L I 2020, ' Scratch resistance of PEG-impregnated green wood: a method for evaluation of swollen wood properties ', Wood Science and Technology, vol. 54, pp. 715-735 . https://doi.org/10.1007/s00226-020-01179-0
This work proposes an experimental approach to study the scratch resistance of green wood under the effect of polyethylene glycol (PEG) impregnation. To this end, small-scale green spruce samples are stabilized against water by using the technique of
Publikováno v:
Engineering Structures. 147:62-76
Modelling in design of new support systems necessitates the joint stiffness of the existing wooden structures. In valuable structures, e.g. in cultural heritage, or structures with inaccessible joints, these stiffness values must be estimated, e.g. b
Publikováno v:
Composites Science and Technology. 137:1-8
For scarce materials, such as archaeological wood, cubic samples are often used instead of standardised prisms for mechanical tests, since the elasticity can be determined in all three directions w ...
Publikováno v:
Holzforschung. 70:855-865
Oak from the Swedish warship Vasa and recent oak that was aged after impregnation with iron(II) chloride has been analyzed by FT-IR spectroscopy and submitted to tensile strength testing. The aim was to investigate correlations between FT-IR bands in
Publikováno v:
Journal of Cultural Heritage. 17:102-113
Large wooden structures of cultural value, such as the Vasa ship, suffer from increasing deformation over time, caused by creep in the wood members, time-dependent deformation of joints and damage accumulation. In this paper, we discuss the suitabili
Autor:
Caroline Öhman, Ingela Bjurhager, Sara Khosravi, Mats Johansson, Petra Nordqvist, Farideh Khabbaz
Publikováno v:
European Polymer Journal. 67:476-482
The wetting, penetration, and film formation of wheat gluten dispersions on porous wood substrates have been studied using different microscopy techniques. The effect variation of wheat gluten concentration, processing temperatures, dispersion compos
Publikováno v:
Holzforschung. 68:649-655
In the wood of the Swedish 17th century warship Vasa, iron (Fe)-catalyzed chemical degradation has taken place after the salvation in 1961, which is manifested in increased acidity accompanied by cellulose degradation and reduced strength in the oak
Autor:
Lauri Rautkari, Gunnar Almkvist, Thomas K. Bader, Leopold Wagner, E. K. Gamstedt, Ingela Bjurhager
Cell wall measures allow for direct assessment of wood modification without the adverse effect of varying density and microstructure. In this study, cell wall properties of recent and archeological oak wood from the Vasa shipwreck were investigated f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbd90ae31843063f2bda5119a122ce8f
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307523
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307523
Autor:
Jonathan Love, Jussi-Petteri Suuronen, Aki Kallonen, Paavo A. Penttilä, Ingela Bjurhager, Kirsi Leppänen, Ritva Serimaa, Kurt V. Fagerstedt, Marko Peura
Publikováno v:
hfsg. 65:865-873
The impact of drying on the structure of the never-dried hardwood cell wall was studied at nanometer level by means of wide- and small-angle X-ray scattering (WAXS, SAXS), and at micrometer level by X-ray microtomography (μCT). Never-dried silver bi
Publikováno v:
Planta. 233:1277-1286
Polarisation Fourier transform infra-red (FTIR) microspectroscopy was used to characterize the organisation and orientation of wood polymers in normal wood and tension wood from hybrid aspen (Populus tremula × Populus tremuloides). It is shown that