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Relationships between mechanical properties of oak timber (Quercus robur L.)
-
Guillermo Riesco Muñoz
und
Andrés Remacha Gete
Veröffentlicht/Copyright:
25. Februar 2011
Abstract
Ring-porous hardwoods such as oak are in high demand for furniture-making, cooperage, flooring, and construction. However, evaluating the quality of such timber is difficult and time consuming, and simpler tests are required. Models for predicting as many mechanical properties as possible, based on easier-to-determine mechanical tests, may help. In this study, the hardness, modulus of elasticity, bending, compression, and impact bending strength parallel to grain were tested on defect-free laths obtained from a sample of 42 oak trees. The relationships between the variables were investigated. Three models that relate the resistance to axial compression with bending strength and stiffness (R2>0.55; P<0.01) are proposed for defect-free oak timber. Selection of models mainly depended on the bias, which was highly variable among the models tested. The prediction models proposed in the international standard EN 384:2004 for structural dimension timber are not suitable for small clear wood specimens, especially in very elastic woods. The relative independence of hardness and impact bending strength as regards the other mechanical properties is also demonstrated.
Keywords: bending strength; clear wood; compression strength; hardness; modulus of elasticity; shock resistance
Received: 2010-9-10
Accepted: 2011-1-21
Published Online: 2011-02-25
Published Online: 2011-02-25
Published in Print: 2011-08-01
©2011 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Original Papers
- Lignocellulosic biorefinery: process integration of hydrolysis and fermentation (SSF process)
- Study of stilbene and resin acid content of Scots pine heartwood by electrical impedance spectroscopy (EIS)
- Radical scavenging characteristics of condensed tannins from barks of various tree species compared with quebracho wood tannin
- Two-step hydrolysis of nipa (Nypa fruticans) frond as treated by semi-flow hot-compressed water
- Effect of acetic acid addition on chemical conversion of woods as treated by semi-flow hot-compressed water
- Oxidative cleavage of non-phenolic β-O-4 lignin model dimers by an extracellular aromatic peroxygenase
- Surface chemistry of vessel elements by FE-SEM, μ-XPS and ToF-SIMS
- Application of FT-NIR-DR and FT-IR-ATR spectroscopy to estimate the chemical composition of bamboo (Neosinocalamus affinis Keng)
- Chemical modification of lignin assisted by microwave irradiation
- Acidic oxidation of kraft lignin into aromatic monomers catalyzed by transition metal salts
- Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 1: Aspects of delignification and surface hardness
- Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 2: Aspects of microtensile strength and chemical changes
- Mode I critical stress intensity factor of wood and medium-density fiberboard measured by compact tension test
- Effect of oxalic acid pretreatment of wood chips on manufacturing medium-density fiberboard
- Experimental investigation of stress wave propagation in standing trees
- Relationships between mechanical properties of oak timber (Quercus robur L.)
- Estimating mechanical properties and specific gravity for five-year-old Eucalyptus tereticornis having broad moisture content range by NIR spectroscopy
- Effect of morphological variability of incrusted pit membranes on efficiency of transverse compression to improve liquid uptake
- Short Notes
- Performance of biopolymer films with reinforcing cellulose-containing fillers from pine pulp and bark and birch sawdust
- Efficacy of two organic biocides with co-added antioxidants
Schlagwörter für diesen Artikel
bending strength;
clear wood;
compression strength;
hardness;
modulus of elasticity;
shock resistance
Artikel in diesem Heft
- Original Papers
- Lignocellulosic biorefinery: process integration of hydrolysis and fermentation (SSF process)
- Study of stilbene and resin acid content of Scots pine heartwood by electrical impedance spectroscopy (EIS)
- Radical scavenging characteristics of condensed tannins from barks of various tree species compared with quebracho wood tannin
- Two-step hydrolysis of nipa (Nypa fruticans) frond as treated by semi-flow hot-compressed water
- Effect of acetic acid addition on chemical conversion of woods as treated by semi-flow hot-compressed water
- Oxidative cleavage of non-phenolic β-O-4 lignin model dimers by an extracellular aromatic peroxygenase
- Surface chemistry of vessel elements by FE-SEM, μ-XPS and ToF-SIMS
- Application of FT-NIR-DR and FT-IR-ATR spectroscopy to estimate the chemical composition of bamboo (Neosinocalamus affinis Keng)
- Chemical modification of lignin assisted by microwave irradiation
- Acidic oxidation of kraft lignin into aromatic monomers catalyzed by transition metal salts
- Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 1: Aspects of delignification and surface hardness
- Effect of Physisporinus vitreus on wood properties of Norway spruce. Part 2: Aspects of microtensile strength and chemical changes
- Mode I critical stress intensity factor of wood and medium-density fiberboard measured by compact tension test
- Effect of oxalic acid pretreatment of wood chips on manufacturing medium-density fiberboard
- Experimental investigation of stress wave propagation in standing trees
- Relationships between mechanical properties of oak timber (Quercus robur L.)
- Estimating mechanical properties and specific gravity for five-year-old Eucalyptus tereticornis having broad moisture content range by NIR spectroscopy
- Effect of morphological variability of incrusted pit membranes on efficiency of transverse compression to improve liquid uptake
- Short Notes
- Performance of biopolymer films with reinforcing cellulose-containing fillers from pine pulp and bark and birch sawdust
- Efficacy of two organic biocides with co-added antioxidants
