Applying digital image correlation to wood strands: Influence of loading rate and specimen thickness
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Gi Young Jeong
Abstract
Previous studies were devoted to various applications of digital image correlation (DIC) to wood and wood-based composites. However, the focus of these studies was qualitative strain distribution. Overall, there is a lack of testing protocols of DIC for quantifying the elastic properties of woody materials. The objective of this study was to investigate the effects of different specimen thicknesses and loading rates on measurement of Young's modulus and Poisson's ratio by DIC. Young's modulus from DIC decreased as thickness increased at a loading rate of 0.254 mm min-1. Comparing the different loading rates at a thickness of 0.794 mm, Young's modulus from DIC was not in agreement with the value obtained by means of the extensometer regardless of loading rate. However, Young's modulus from DIC at a thickness of 0.381 mm and a loading rate of 0.254 mm min-1 was in good agreement with the corresponding Young's modulus obtained by an extensometer. Poisson's ratio measured from different loading rates and specimen thicknesses was not significantly different between the two measurement systems. From the testing arrangement applied for this study, it is recommended that DIC should be applied at a loading rate of 0.254 mm min-1 or slower for strands with a thickness of 0.381 mm or less.
©2010 by Walter de Gruyter Berlin New York
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- A CP/MAS 13C-NMR study of cellulose fibril aggregation in eucalyptus dissolving pulps during drying and the correlation between aggregate dimensions and chemical reactivity
- Characteristics and discrimination of five types of wood-plastic composites by FTIR spectroscopy combined with principal component analysis
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- Viscoelasticity of aspen wood strands during hot pressing: Experimentation and modeling
- Applying digital image correlation to wood strands: Influence of loading rate and specimen thickness
- Influence of loading conditions on the measurement of mode I critical stress intensity factor for wood and medium-density fiberboard by the single-edge-notched tension test
- Advancing the dynamic mechanical analysis of biomass: comparison of tensile-torsion and compressive-torsion wood DMA
- Improvement of water resistance and dimensional stability of wood through titanium dioxide coating
- Analysis of water vapour sorption of oleo-thermal modified wood of Acacia mangium and Endospermum malaccense by a parallel exponential kinetics model and according to the Hailwood-Horrobin model
- Influence of chemical treatments on moisture-induced dimensional change and elastic modulus of earlywood and latewood
- Measurement of internal stress in Radiata pine sapwood during drying using an improved online sensor
- Mechanical potential of eco-OSB produced from durable and nondurable species and natural resins
- Improvement of glued-in-rod joint system using compressed wooden dowel
- Short note
- On the long-term visco-elastic behaviour of polyethylene glycol (PEG) impregnated archaeological oak wood
- Meetings
- Meetings
- Acknowledgement
- Acknowledgement
Articles in the same Issue
- Original papers
- Galactoglucomannan stabilization during the initial kraft cooking of Scots pine
- A CP/MAS 13C-NMR study of cellulose fibril aggregation in eucalyptus dissolving pulps during drying and the correlation between aggregate dimensions and chemical reactivity
- Characteristics and discrimination of five types of wood-plastic composites by FTIR spectroscopy combined with principal component analysis
- Macro- and micromechanical characterization of wood-adhesive bonds exposed to alternating climate conditions
- Viscoelasticity of aspen wood strands during hot pressing: Experimentation and modeling
- Applying digital image correlation to wood strands: Influence of loading rate and specimen thickness
- Influence of loading conditions on the measurement of mode I critical stress intensity factor for wood and medium-density fiberboard by the single-edge-notched tension test
- Advancing the dynamic mechanical analysis of biomass: comparison of tensile-torsion and compressive-torsion wood DMA
- Improvement of water resistance and dimensional stability of wood through titanium dioxide coating
- Analysis of water vapour sorption of oleo-thermal modified wood of Acacia mangium and Endospermum malaccense by a parallel exponential kinetics model and according to the Hailwood-Horrobin model
- Influence of chemical treatments on moisture-induced dimensional change and elastic modulus of earlywood and latewood
- Measurement of internal stress in Radiata pine sapwood during drying using an improved online sensor
- Mechanical potential of eco-OSB produced from durable and nondurable species and natural resins
- Improvement of glued-in-rod joint system using compressed wooden dowel
- Short note
- On the long-term visco-elastic behaviour of polyethylene glycol (PEG) impregnated archaeological oak wood
- Meetings
- Meetings
- Acknowledgement
- Acknowledgement
