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Start Over Descriptor "physical properties of wood" Topic moisture content
4 results on '"physical properties of wood"'

1. Wood Machining Investigations: Parameters to Consider for Thorough Experimentation

Author

Bolesław Porankiewicz

Subjects
wood grain orientation angles, rake angle, cutting edge dullness, thickness of cutting layer, cutting velocity, moisture content, wood temperature, mechanical properties of wood, physical properties of wood, main force, normal force, tool life, Biotechnology, TP248.13-248.65
Abstract

Investigators wanting to study aspects of wood machining face many challenges. The material under investigation is inherently different with respect to its three major axes, and it responds in various ways to local temperature, moisture, and many other variables. Researchers proposing future research projects in this area thus face a critically important task of selecting parameters to include either as variables or as quantities to hold constant. This editorial outlines key parameters and conditions of wood machining that can be considered, depending on the scope of a project.

Published
2013
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2. Wood Machining Investigations: Parameters to Consider for Thorough Experimentation.

Author

Porankiewicz, Bolesław

Subjects
*WOOD, *WOOD anatomy, *MOISTURE in wood, *MACHINING, *TEMPERATURE, *EXPERIMENTS, *INVESTIGATIONS
Abstract

Investigators wanting to study aspects of wood machining face many challenges. The material under investigation is inherently different with respect to its three major axes, and it responds in various ways to local temperature, moisture, and many other variables. Researchers proposing future research projects in this area thus face a critically important task of selecting parameters to include either as variables or as quantities to hold constant. This editorial outlines key parameters and conditions of wood machining that can be considered, depending on the scope of a project. [ABSTRACT FROM AUTHOR]

Published
2014

3. Fizikalne lastnosti bukovine po žledolomu

Author

Jakič, Jana and Straže, Aleš

Subjects
udc:630*423.3:630*812, žledolom, fizikalne lastnosti lesa, bukev, vlažnost lesa, gostota lesa, wood density, beech, physical properties of wood, ice storm, moisture content
Abstract

Proučili smo vlažnost in gostoto lesa ter zunanje morfološke spremembe na različno prizadetih drevesih navadne bukve (Fagus sylvatica L.) ob koncu prve vegetacijske dobe po velikem žledolomu v Sloveniji v letu 2014. Potrdili smo povezanost med deležem še aktivnega koreninskega sistema in stopnjo porjavelosti (izsušenosti) krošnje dreves ter porazdelitvijo vlažnosti lesa v deblih dreves. Pri najbolj prizadetih drevesih smo v prevodnem zunanjem delu beljave potrdili padec vlažnosti lesa pod mejo naravne biološke odpornosti (u < 60 %). Po prvi vegetacijski dobi, nismo potrdili splošnega padca gostote lesa (in z njim povezanega poslabšanja mehanskih lastnosti), ki bi bil posledica okužbe in razkroja lesa z glivami Moisture content and wood density of variously damaged uprooted European beech (Fagus sylvatica L.) trees were studied at the end of the first vegetation period after ice storm damage in Slovenian forests in 2014. The study confirmed significant correlation between the amount of active root system and necrosis of leaves and changed moisture content and its distribution in the trunks. The moisture content of wood below 60 % was confirmed in sapwood of extremely damaged trees, indicating diminished protection against wood destroying organisms. We could not confirm any reduction of wood density which would indicate deterioration of wood at the end of the first vegetation period after ice storm damage

Published
2020

4. Fizikalne lastnosti bukovine po žledolomu

Author

Straže, Aleš, Merela, Maks, Krže, Luka, Čufar, Katarina, and Gorišek, Željko

Subjects
žledolom, fizikalne lastnosti lesa, bukev, udc:630*8, vlažnost lesa, gostota lesa, wood density, beech, physical properties of wood, ice storm, moisture content
Abstract

Proučili smo fizikalne lastnosti (vlažnost in gostoto) lesa različno prizadetih izruvanih dreves navadne bukve (Fagus sylvatica L.) ob koncu prve vegetacijske dobe po velikem žledolomu v letu 2014. Raziskava je potrdila povezavo med deležem še aktivnega koreninskega sistema in stopnjo porjavelosti (izsušenosti) krošnje dreves ter vlažnostjo lesa in njenim razporedom. Pri zelo prizadetih drevesih smo v prevodnem zunanjem delu beljave potrdili zmanjšanje vlažnosti lesa pod mejo naravne biološke odpornosti (u < 60 %). Po prvi vegetacijski dobi nismo mogli potrditi zmanjšanja gostote lesa (in z njim povezanega poslabšanja mehanskih lastnosti), kar bi potrdilo okužbo in razkroj lesa z glivami. Physical properties (moisture content and density) of wood of variously damaged uprooted European beech (Fagus sylvatica L.) trees were studied at the end of the first vegetation period after the ice storm damage in Slovenian forests in 2014. The research confirmed significant correlation between the amount of active root system and necrosis of leaves and changed moisture content and its distribution in the trunks. The moisture content of wood below 60 % (indicating extinguished protection against wood destroying organisms) was found in sapwood of extremely damaged trees. At the end of the first vegetation period after damage we could not confirm any reduction of wood density (and reduced mechanical properties) which would indicate deterioration of wood.

Published
2016

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