Journals / İstanbul Üniversitesi Orman Fakültesi Dergisi / 2006 / Cilt: 56 - Sayı: 1

Dağınık aydınlatma koşullarında örnek konumlamanın odunun renk değerleri üzerindeki etkisi

Affect of sample position on colour values of wood under diffuse illumination

Pages
73–79
Publication Date
2022-10-18
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Therefore comparison and segregation of wood based on colour measurement must be made carefully.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Colour of the wood surface is a major criterion in evaluating the quality of furniture, panels, door elements and flooring.
📊
Key Findings & Data:Also the colour difference values between structural areas of oak wood is greater than 20.
💡
Conclusion & Impact:Therefore comparison and segregation of wood based on colour measurement must be made carefully.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Colour of the wood surface is a major criterion in evaluating the quality of furniture, panels, door elements and flooring. Meanwhile, wood is not isotropic, and the textural quality of the surface affects the visual appearance. Optical devices using diffuse illumination compensate deficiency of illumination with given inclination. Using diffuse illumination CIE L*a*b* colour values of different structural areas of oak wood in two directions perpendicular to each other are determined. Fibre areas were found to be more sensitive to sample position than ray areas. Also the colour difference values between structural areas of oak wood is greater than 20. Therefore comparison and segregation of wood based on colour measurement must be made carefully.

Özet

Mobilya, kapı, yer kaplaması gibi ürünlerin en önemli kalite değerlendirme kriterlerinden birisi yüzeyinin rengidir. Bununla birlikte odun tekdüze bir yapıda değildir, bu nedenle de yüzey tekstürü görsel algılamayı etkilemektedir. Dağınık aydınlatma kullanan cihazlar belli açıdan aydınlatma kullanan cihazların eksiğini gidermektedir. Bu çalışmada meşe odununun farklı strüktürel alanları birbirine dik iki farklı konumda dağınık aydınlatma kullanarak CIE L*a*b* renk değerleri belirlenmiştir. Öz ışını alanlarına kıyasla lif alanlarının konumlanmaya daha hassas olduğu belirlenmiştir. Ayrıca meşe odununun farklı alanları arasında renk farkı değerleri 20'nin üstündedir. Bu nedenle renge dayalı odunun karşılaştırılma ve sınıflandırılma işlemleri çok dikkatli yapılmalıdır.

🔖

Cite This Article

ATİK, C. (2022). Dağınık aydınlatma koşullarında örnek konumlamanın odunun renk değerleri üzerindeki etkisi. İstanbul Üniversitesi Orman Fakültesi Dergisi, Cilt: 56 - Sayı: 1, 73–79. https://ajindex.com/articles/554438

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (10)

  1. ANONYMOUS 2001: Experience of colour. Herman Miller Inc. www.hermanmiller.com BURTIN, P., JAY-ALLEMAND, C, CHARPENTIER, J.P., JANIN, G. 2000: Modification of hybrid walnut (Juglans nigra 23 x Juglans regia) wood colour and phenolic composition under various steaming conditions. Holzforchung, Vol 54(1): s. 33-38
  2. CHARRIER, B., JANIN, G., HALUK, J.P., Mosedale, J.M. 1995: Colour and chemical characteristics of moon rings in oak wood. Holzforschung Vol 49 (4): s. 287-292
  3. DELLUS, V., Scalbert, A., Janin, G. 1997: Polyphenols and colour of Douglas fir heartwood. Holzforschung 51(4): s. 291-295
  4. KLUMPERS, J., JANIN, G., CHARRIER, b. 1992: Relation between natural oak wood colour and its polyphenol content. Bulletin du Groupe Polyhenol 16(2): s. 367-370
  5. MILLER, R.B., Quirk, J.T., Christensen, D.J. 1985: Identifying white oak logs with Sodium nitrite. Forest Products J. 35(2): s. 33-38
  6. MITSUI, K., TAKADA, H., SUGIYAMA, M., HASEFAWA, R. 2001: Changes in the properties of light-irradiated wood with heat treatment. Holzforchung 55 (6): s. 601-606
  7. MONNONEN, K., ALVILA, L., PAKKANEN T.T. 2002: CIEL*a*b* Measurements to determine the role of felling season, log storage and kiln drying on colouration of silver birch wood. Scandinavian J. For. Res. 17: s. 179-191
  8. RESCH, H., HANSMANN, C., POKORNY M. 2000: The colour of wood from white oak. Holzforschung Austria. 1/2000: s. 13-15
  9. SUNDQUVIST, B. 2002: Wood colour control during kiln drying. Forest Products J. 52(2): s. 30-37
  10. WEGENER, G., FENGEL, F. 1987: Investigation on colour changes resulting from drying of European Oakwood. Proceedings of the Fourth International Symposium on Wood and Pulping Chemistry, 1: s. 121-123