Wood surface colour is a very important quality criterion in the utilisation of wood, especially in indoor applications. In this study, an attempt was made to analyse wood surface discolouration due to artificial indoor light irradiation of the most frequently traded wood species in Europe altogether. Sixteen wood species, twelve hardwood and four softwood species, were exposed for 120 hours to a xenon-arc lamp equipped with a 3 mm window glass filter, in order to simulate natural sunlight behind a window glass. Eleven wood species were chosen and further exposed to irradiation for up to 600 hours. Colour measurements were performed by means of a colorimeter device on exposed and non-exposed areas of the samples. Using the CIE-L*a*b* colour measuring system, wood surface discolouration was measured and calculated according to ∆L*, ∆a*, ∆b* and ∆E* values. An idea of the different behaviour of these species and how they relate to each other could be given.
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机译：木材表面颜色是木材利用中非常重要的质量标准，尤其是在室内应用中。在这项研究中，人们试图分析由于欧洲最频繁交易的木材种类的人工室内光线照射而引起的木材表面变色。将16种木材，12种硬木和4种针叶木暴露于装有3毫米玻璃窗滤光镜的氙弧灯下120小时，以模拟玻璃窗后的自然阳光。选择了11种木材，并进一步暴露于辐射下长达600小时。借助于色度计装置对样品的暴露和未暴露区域进行颜色测量。使用CIE-L * a * b *颜色测量系统，根据∆L *，∆a *，∆b *和∆E *值测量并计算木材表面变色。可以对这些物种的不同行为以及它们之间的相互关系给出一个想法。
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