Results 241 to 250 of about 1,140,494 (284)

Relation of Chemical Composition and Colour of Spruce Wood

Polymers, 2022
The visual inspection of fresh cut spruce wood (Picea abies, L. Karst.) showed the variability of its colour. Wood visual inspection is a part of wood quality assessment, for example, prior to or after its processing. The detail spruce wood colour analysis was performed using spectrophotometric data.
Richard Hrčka, Viera Kučerová, Tatiana Hýrošová   +2 more
exaly   +3 more sources

Wood Colour Variations of Quercus Species in Romania

Forests, 2023
Wood colour metrics are increasingly being used in wood technology and ecology studies. Researchers usually determine the colours of the wood after treatment or in different habitats.
Halalisan Aureliu Florin, Petar Antov, Nikolay Neykov   +2 more
exaly   +2 more sources

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Wood colour of central European wood species: CIELAB characterisation and colour intensification

European Journal of Wood and Wood Products, 2016
In this project, 24 central European wood species have been characterized spectrophotometrically using the CIELAB-colour-system. Special focus has been put on the analysis of colour intensification of wood surfaces due to surface wetting. The analysis shows how the various wood species react to wetting and how the colour is changed.
Tillmann Meints
exaly   +2 more sources

Photodegradation of wood at elevated temperature: Colour change

Journal of Photochemistry and Photobiology B: Biology, 2012
The purpose of this investigation was to evaluate the effect of elevated temperature on the photodegradation of solid wood. The work presented here, dealt with the changes of colour during the degradation process. Wood samples were irradiated by mercury vapour lamp at 80°C and at 30°C to screen out the effect of thermal decomposition during ...
Laszlo Tolvaj
exaly   +3 more sources

Evaluation of colour differences on wood surfaces

European Journal of Wood and Wood Products, 2011
Colorimetric measurements are often carried out for evaluation of colour changes on wooden surfaces. However, a grading of the value $\Delta E^{*}_{\mathrm{ab}}$ , (colour difference) is missing for wooden surfaces. Colour measurements were carried out on surfaces
Beate Buchelt, André Wagenführ
exaly   +2 more sources

On the modelling of colour changes of wood surfaces

European Journal of Wood and Wood Products, 2009
Colour has an influence on the aesthetic properties of wood surfaces, and changes in colour have an impact on each individual’s perception of wood construction materials. This study examines an approach to model the discolouration of wood during natural weathering.
Thomas Schnabel
exaly   +2 more sources

Transparent Coating Systems Applied on Spruce Wood and Their Colour Stability on Exposure to an Accelerated Ageing Process

Forests
The objective of this study was to investigate the colour stability of spruce wood surfaces treated with coating systems (CS) and exposed to accelerated ageing.
Jozef Kudela, Richard Hrčka
exaly   +2 more sources

Colour Characterisation of Wood

2015
The colour and gloss of wood is very important aesthetical property and it has a fundamental influence on the commercial value of timbers. Nevertheless, the use of colour measurements and evaluations in practice is unsatisfactory also today. In this Chapter a new colour estimation method has been introduced with many practical applications and ...
Etele Csanády, Endre Magoss, László Tolvaj   +2 more
openaire   +1 more source

Colouring Wood

Review of Progress in Coloration and Related Topics, 1983
Before the development of synthetic dyes, natural materials and extracts were used to colour wood, but few remain in use.Present day colouring uses synthetic dyes or pigment or natural pigment dissolved or dispersed in water, hydrocarbon solvents, alcohols or glycols.Properties of each group and factors affecting choices of combinations for colouring ...
openaire   +1 more source

Influence of Natural and Artificial Weathering on the Colour Change of Different Wood and Wood-Based Materials [PDF]

Forests, 2018
The importance of the aesthetic performance of wood is increasing and the colour is one of the most important parameters of aesthetics, hence the colour stability of twelve different wood-based materials was evaluated by several in-service and laboratory tests. The wood used for wooden façades and decking belongs to a group of severely exposed surfaces.
Miha Humar, Davor Kržišnik, Boštjan Lesar   +2 more
exaly   +3 more sources