Correlations between quality parameters of structural spruce wood

• Autorzy: Rohanowa A.
• Języki publikacji: EN

Abstrakty

EN

The quality of structural spruce wood is described with parameters: modulus of elasticity, modulus of rupture and wood density. They are determined by destructive bending tests according to EN 408. There is a dominant relationship between strength and predictive parameter representing a basis for strength grading of structural wood. Non-destructive methods based on various principles are used to determine the quality of structural wood. Correlations between parameters from destructive bending tests and non-destructive methods were evaluated. All dependences are statistically significant. This knowledge is used in two-stage prediction method for determination of modulus of rupture.

Słowa kluczowe

EN

structural spruce wood; destructive bending test; non-destructive method; quality parameter; correlation

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2014
• Tom: No. 88
• Strony: 220--224
• Opis fizyczny: Bibliogr. 6 poz.

Twórcy

autor

Rohanowa A.

• Faculty of Wood Sciences and Technology, Technical University in Zvolen

Bibliografia

• 1. PAZLAR, T. - SRPČIČ, J. - PLOS, M. - TURK, G. 2011: Non-destructive tests for strength grading of Slovenian structural sawn timber. In 17th International nondestructive testing and evaluation of wood symposium : proceedings : September 14-16, 2011 Sopron, Hungary.
• 2. ROHANOVÁ, A.- LAGAŇA, R. - DUBOVSKÝ, J.(2010): Grading characteristics of structural Slovak spruce timber determined by ultrasonic and bending methods. In The Future of Quality Control for Wood & Wood Products’, The Final Conference of COST Action E53, Edinburgh, pp. 9.
• 3. ROHANOVÁ, A., LAGAŇA, R., BABIAK, M. 2011: Comparison of non-destructive methods of quality estimation of the construction spruce wood grown in Slovakia. In Proceedings 17th International nondestructive Testing and Evaluation of Wood Symposium. University of West Hungary, faculty of Wood Sciences, Sopron, 2011, ISBN 978-963-9883-82-6, pp. 247-254.
• 4. WEIDENHILLER. A. - DENZLER, J. K. (2009): Optimising machine strength grading with three indicating properties”. In: Proceedings of the Economic and technical aspects of quality control for wood and wood products. Cost Action E53 Conference 22nd – 23rd October 2009, Lisbon, Portugal. Paper #7. EN 338. Structural timber. Strength classes. 2009.
• 5. EN 338. Structural timber. Strength classes. 2009. EN 408. Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties. 2003.
• 6. EN 14 081-4. Timber structures- Strength graded structural timber with rectangular cross section - Part 4: Machine grading - Grading machine settings for machine controlled systems. 2008.