Abstract
Wood physical and mechanical properties in seven tropical hardwood species viz., Acacia auriculiformis A. Cunn. ex Benth., Artocarpus hirsutus Lamk., Artocarpus heterophyllus Lamk., Swieteniamacrophylla King, Xylia dolabriformis Benth., Hevea braziliensis (H.B.K.) M. A.), and Tectona grandis L.f. have been studied by means of destructive and non-destructive techniques (NDT). Mechanical strength properties and specific gravity were evaluated by conventional methods. NDT was carried out by a Pilodyn and Treesonic Microsecond Timer (TMT) to measure a steel pin penetration depth into wood and dynamic MOE, respectively. In focus was the question, whether NDT data are suitable predictors for physical and mechanical properties of the indicated hardwood species. Dynamic MOE obtained by TMT correlated strongly positive with all the strength properties studied, except shearing stress. TMT data also correlated very well to static bending MOE and MOR. A linear relationship was found between Pilodyn steel pin penetration depth and oven dry specific gravity in all the species. Both Pilodyn and TMT proved to be useful predictors of timber properties, and these instruments have a high potential for timber grading.
Acknowledgments
The funding support received from the Kerala Forest Department is greatfully acknowledged. The authors also thank Mr. N. Rajagopal, Joint Director and Mr. Jimmy Thomas, Wood Technologist, Wood Technology Laboratory, Rubber Board, India for technical support for this study.
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©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original Articles
- Influence of cellulose supramolecular structure on strength properties of chemical pulp
- Morphological, mechanical, and optical properties of cypress papers
- Determination of ion exchange constants for pairs of metal ions to lignocellulosic materials by column chromatography
- Combustion behavior of oak wood (Quercus mongolica L.) modified by 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU)
- Synthesis and antifungal activity of camphoric acid-based acylhydrazone compounds
- Lignification of ray parenchyma cells in the xylem of Pinus densiflora. Part I: Microscopic investigation by POM, UV microscopy, and TOF-SIMS
- Lignification of ray parenchyma cells in the xylem of Pinus densiflora. Part II: Microchemical analysis by laser microdissection and thioacidolysis
- Distribution of lignin in vascular bundles of coconut wood (Cocos nucifera) by cellular UV-spectroscopy and relationship between lignification and tensile strength in single vascular bundles
- Compression properties of vascular boundles and parenchyma of rattan (Plectocomia assamica Griff)
- Properties of wood-plastic composites (WPCs) reinforced with extracted and delignified wood flour
- Anisotropic elastic properties of common ash (Fraxinus excelsior L.)
- Destructive and non-destructive evaluation of seven hardwoods and analysis of data correlation
- Experimental validation of green wood peeling assisted by IR heating – some considerations of the analytical system design
- The influence of felling season and log-soaking temperature on the wetting and phenol formaldehyde adhesive bonding characteristics of birch veneer
- Comparative evaluation of various lignin determination methods on hemicellulose-rich fractions of spruce and birch obtained by pressurized hot-water extraction (PHWE) and subsequent ultrafiltration (UF)
- Conversion between basic density and apparent density at any moisture content in Eucalyptus grandis
- Postpeak residual capacity of nailed connections of a shear wall
- Obituary
- Memorial on Horst H. Nimz (1930–2013)
Articles in the same Issue
- Frontmatter
- Original Articles
- Influence of cellulose supramolecular structure on strength properties of chemical pulp
- Morphological, mechanical, and optical properties of cypress papers
- Determination of ion exchange constants for pairs of metal ions to lignocellulosic materials by column chromatography
- Combustion behavior of oak wood (Quercus mongolica L.) modified by 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU)
- Synthesis and antifungal activity of camphoric acid-based acylhydrazone compounds
- Lignification of ray parenchyma cells in the xylem of Pinus densiflora. Part I: Microscopic investigation by POM, UV microscopy, and TOF-SIMS
- Lignification of ray parenchyma cells in the xylem of Pinus densiflora. Part II: Microchemical analysis by laser microdissection and thioacidolysis
- Distribution of lignin in vascular bundles of coconut wood (Cocos nucifera) by cellular UV-spectroscopy and relationship between lignification and tensile strength in single vascular bundles
- Compression properties of vascular boundles and parenchyma of rattan (Plectocomia assamica Griff)
- Properties of wood-plastic composites (WPCs) reinforced with extracted and delignified wood flour
- Anisotropic elastic properties of common ash (Fraxinus excelsior L.)
- Destructive and non-destructive evaluation of seven hardwoods and analysis of data correlation
- Experimental validation of green wood peeling assisted by IR heating – some considerations of the analytical system design
- The influence of felling season and log-soaking temperature on the wetting and phenol formaldehyde adhesive bonding characteristics of birch veneer
- Comparative evaluation of various lignin determination methods on hemicellulose-rich fractions of spruce and birch obtained by pressurized hot-water extraction (PHWE) and subsequent ultrafiltration (UF)
- Conversion between basic density and apparent density at any moisture content in Eucalyptus grandis
- Postpeak residual capacity of nailed connections of a shear wall
- Obituary
- Memorial on Horst H. Nimz (1930–2013)