Linking visual and stress wave grading of beech wood from the log to the sawmill product

Straže, Aleš (avtor), Plavčak, Denis (avtor), Žveplan, Ervin (avtor), Gorišek, Željko (avtor)

The quality potential and possibilities of using beech logs and sawn wood was investigated. Twenty-seven beech logs, with a mean diameter of 48 cm, were cut from 10 trees from a Hacquetio epipactidis-Fagetum site in SE Slovenia. The trees were pre-selected according to the national 5-level quality scale for forest stand evaluation, using two trees per class. Beech logs were classified according to the EN 1316-1 and sawn afterwards into unedged boards of 35 mm nominal thickness. Altogether, 250 boards were visually graded according to the rules of the European Organisation of the Sawmill Industry (EOS). Longitudinal vibration of logs and boards with the determination of stress wave velocity by MTG timber grader was additionally included into the quality assessment. In the case of logs, we confirmed significance of the relationship between visually assessed log quality and stress wave velocity. The stress wave velocity in logs was also related to the stress wave velocity in boards, where it varied considerably, especially for low-graded material. In the case of sawn wood, the relationship between sawn wood grade and stress wave velocity was insignificant. The research confirmed the possibility of presorting of logs, visually or non-destructively, for better classification and utilization of sawn timber.

• Jezik: Angleški jezik
• Ključne besede: beech, quality control, logs, sawnwood, visual assessment, stress wave grading
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 6 str.
• Številčenje: Vol. 3, iss. 1, art. 65
• PID: 20.500.12556/RUL-135244
• UDK: 630*8
• ISSN pri članku: 2673-4931
• DOI: 10.3390/IECF2020-08450
• COBISS.SI-ID: 52769795
• Datum objave v RUL: 02.03.2022

Gradivo je del revije

• Naslov: Environmental sciences proceedings
• Skrajšan naslov: Environ. sci. proc.
• Založnik: MDPI
• ISSN: 2673-4931
• COBISS.SI-ID: 52763907

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.01.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: bukev, kakovost kontrole, žagan les, vizualno ocenjevanje