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2017 | OriginalPaper | Buchkapitel

35. Experimental and Numerical Investigation of Effects of Fiber Orientation of Wood Stiffness

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Abstract

Wood is one of the most useful and important natural materials with diverse applications in civil, architectural and constructional engineering. The stiffness of the wood depends on the fiber orientation, distribution of knot and percentage of latewood, etc. Japanese cedar (Cryptomeria japonica) was used to prepare the tensile test specimen in this paper to investigate the effects of fiber orientation on wood stiffness. Before performing the tensile test, surface image of the test specimen was captured and the image was analyzed by least squares method and digital image processing software of MATLAB to obtain the fiber orientation. Based on the obtained fiber orientation, finite element method (FEM) software package ANSYS was employed to calculate the strain distribution of the test specimen. Three-dimensional digital image correlation (3D-DIC) method was also used to verify the FEM results. The DIC software, VIC-3D, was used to analyze the surface deformation of the test specimen under tension. Strain distribution differences between the earlywood and latewood were investigated. With the integration of the digital image analysis technique, FEM and 3D-DIC method, the effective stiffness of the wood can be predicted and the reliability and safety of wood construction can be ensured.

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Literatur
1.
Zurück zum Zitat I.M. Daniel, O. Ishai, Engineering Mechanics of Composite Materials (Oxford University Press, New York, 1994) I.M. Daniel, O. Ishai, Engineering Mechanics of Composite Materials (Oxford University Press, New York, 1994)
2.
Zurück zum Zitat F.L. Matthews, R.D. Rawlings, Composite Materials: Engineering and Science (CRC Press, Boca Raton, 1999) F.L. Matthews, R.D. Rawlings, Composite Materials: Engineering and Science (CRC Press, Boca Raton, 1999)
3.
Zurück zum Zitat C. Mattheck, H. Kubler, Wood—The Internal Optimization of Trees (Springer, Berlin, 1997)CrossRef C. Mattheck, H. Kubler, Wood—The Internal Optimization of Trees (Springer, Berlin, 1997)CrossRef
4.
Zurück zum Zitat Forest Products Laboratory, Wood Handbook—Wood as an Engineering Material, Centennial ed., USDA, U.S.A. (2010) Forest Products Laboratory, Wood Handbook—Wood as an Engineering Material, Centennial ed., USDA, U.S.A. (2010)
5.
Zurück zum Zitat F. Farruggia, P. Perre, Microscopic tensile tests in the transverse plane of earlywood and latewood parts of spruce. Wood Sci. Technol. 34, 65–82 (2000)CrossRef F. Farruggia, P. Perre, Microscopic tensile tests in the transverse plane of earlywood and latewood parts of spruce. Wood Sci. Technol. 34, 65–82 (2000)CrossRef
6.
Zurück zum Zitat J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—part I. Clear wood specimens stressed parallel to the grain. Holzforschung 51, 179–184 (1997) J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—part I. Clear wood specimens stressed parallel to the grain. Holzforschung 51, 179–184 (1997)
7.
Zurück zum Zitat J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—Part II. Compression wood specimens stressed parallel to the grain. Holzforschung 51, 571–576 (1997)CrossRef J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—Part II. Compression wood specimens stressed parallel to the grain. Holzforschung 51, 571–576 (1997)CrossRef
8.
Zurück zum Zitat J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—part III. Clear wood specimens with various slopes of grain. Holzforschung 52, 95–101 (1998)CrossRef J. Bodner, M.G. Schlag, G. Grull, Fracture initiation and progress in wood specimens stressed in tension—part III. Clear wood specimens with various slopes of grain. Holzforschung 52, 95–101 (1998)CrossRef
9.
Zurück zum Zitat S. Cramer, D. Kretschmann, R. Lakes, T. Schmidt, Earlywood and latewood elastic properties in loblolly pine. Holzforschung 59, 531–538 (2005)CrossRef S. Cramer, D. Kretschmann, R. Lakes, T. Schmidt, Earlywood and latewood elastic properties in loblolly pine. Holzforschung 59, 531–538 (2005)CrossRef
10.
Zurück zum Zitat J. Pereira, J. Xavier, J. Morais, J. Lousada, F. Pierron, On the evaluation of elastic properties of P. Pinaster at the growth ring scale. Mecanica Exp. 20, 51–58 (2012) J. Pereira, J. Xavier, J. Morais, J. Lousada, F. Pierron, On the evaluation of elastic properties of P. Pinaster at the growth ring scale. Mecanica Exp. 20, 51–58 (2012)
11.
Zurück zum Zitat C.J. Lin, Y.C. Kao, T.T. Lin, M.J. Tsai, S.Y. Wang, L.D. Lin, Y.N. Wang, M.H. Chan, Application of an ultrasonic tomographic technique for detecting defects in standing trees. Int. Biodeterior. Biodegrad. 62, 434–441 (2008)CrossRef C.J. Lin, Y.C. Kao, T.T. Lin, M.J. Tsai, S.Y. Wang, L.D. Lin, Y.N. Wang, M.H. Chan, Application of an ultrasonic tomographic technique for detecting defects in standing trees. Int. Biodeterior. Biodegrad. 62, 434–441 (2008)CrossRef
12.
Zurück zum Zitat D.T. Pham, R.J. Alcock, Automatic detection of defects on birch wood boards. Proc. Inst. Mech. Eng. J. Process Mech. Eng. 210, 45–52 (1996)CrossRef D.T. Pham, R.J. Alcock, Automatic detection of defects on birch wood boards. Proc. Inst. Mech. Eng. J. Process Mech. Eng. 210, 45–52 (1996)CrossRef
13.
Zurück zum Zitat D.T. Pham; R.J. Alcock, segmentation of birch wood board images, in Proceedings IWISP ‘96 (Manchester, UK, 1996), pp. 637–640 D.T. Pham; R.J. Alcock, segmentation of birch wood board images, in Proceedings IWISP ‘96 (Manchester, UK, 1996), pp. 637–640
14.
Zurück zum Zitat I.M. Daniel, O. Ishai, Engineering Mechanics of Composite Materials, 2nd edn. (Oxford University Press, New York, 2006) I.M. Daniel, O. Ishai, Engineering Mechanics of Composite Materials, 2nd edn. (Oxford University Press, New York, 2006)
15.
Zurück zum Zitat L. Breinig, F. Brüchert, R. Baumgartner, U.H. Sauter, Measurement of knot width in CT images of Norway spruce (Picea abies [L.] Karst.)—evaluating the accuracy of an image analysis method. Comput. Electron. Agric. 85, 149–156 (2012)CrossRef L. Breinig, F. Brüchert, R. Baumgartner, U.H. Sauter, Measurement of knot width in CT images of Norway spruce (Picea abies [L.] Karst.)—evaluating the accuracy of an image analysis method. Comput. Electron. Agric. 85, 149–156 (2012)CrossRef
16.
Zurück zum Zitat H. Boukadida, F. Longuetaud, F. Colin, C. Freyburger, T. Constant, J.M. Leban, F. Mothe, Pith extract: a robust algorithm for pith detection in computer tomography images of wood—application to 125 logs from 17 tree species. Comput. Electron. Agric. 85, 90–98 (2012)CrossRef H. Boukadida, F. Longuetaud, F. Colin, C. Freyburger, T. Constant, J.M. Leban, F. Mothe, Pith extract: a robust algorithm for pith detection in computer tomography images of wood—application to 125 logs from 17 tree species. Comput. Electron. Agric. 85, 90–98 (2012)CrossRef
17.
Zurück zum Zitat A. Krähenbühl, B. Kerautret, I. Debled-Rennesson, F. Longuetaud, F. Mothe, Knot detection in X-Ray CT images of wood. Adv. Vis. Comput. II LNCS 7432, 209–218 (2012) A. Krähenbühl, B. Kerautret, I. Debled-Rennesson, F. Longuetaud, F. Mothe, Knot detection in X-Ray CT images of wood. Adv. Vis. Comput. II LNCS 7432, 209–218 (2012)
18.
Zurück zum Zitat Q. Wei, S.Y. Zhang, Y.H. Chui, B. Leblon, Reconstruction of 3D images of internal Log characteristics by means of successive 2D Log computed tomography images. Holzforschung 63, 575–580 (2009) Q. Wei, S.Y. Zhang, Y.H. Chui, B. Leblon, Reconstruction of 3D images of internal Log characteristics by means of successive 2D Log computed tomography images. Holzforschung 63, 575–580 (2009)
19.
Zurück zum Zitat J. Nystrom, Automatic measurement of fiber orientation in softwoods by using the tracheid effect. Comput. Electron. Agric. 41, 91–99 (2003)CrossRef J. Nystrom, Automatic measurement of fiber orientation in softwoods by using the tracheid effect. Comput. Electron. Agric. 41, 91–99 (2003)CrossRef
20.
Zurück zum Zitat J. Zhou, J. Shen, Ellipse detection and phase demodulation for wood grain orientation measurement based on the tracheid effect. Opt. Lasers Eng. 39, 73–89 (2003)CrossRef J. Zhou, J. Shen, Ellipse detection and phase demodulation for wood grain orientation measurement based on the tracheid effect. Opt. Lasers Eng. 39, 73–89 (2003)CrossRef
21.
Zurück zum Zitat M. Hu, M. Johansson, A. Olsson, B. Enquist, Comparison of local variation of modulus of elasticity determined on basis of scanned fiber angles and full strain field measurements, in The 18th International Nondestructive Testing and Evaluation of Wood Symposium, Madison, 2013 M. Hu, M. Johansson, A. Olsson, B. Enquist, Comparison of local variation of modulus of elasticity determined on basis of scanned fiber angles and full strain field measurements, in The 18th International Nondestructive Testing and Evaluation of Wood Symposium, Madison, 2013
22.
Zurück zum Zitat A. Olsson, J. Oscarsson, E. Serrano, B. Kallsner, M. Johansson, B. Enquist, Prediction of Timber Bending Strength and In-member Cross-sectional Stiffness Variation on the Basis of Local Wood Fiber orientation. Eur. J. Wood Prod. 71, 319–333 (2013)CrossRef A. Olsson, J. Oscarsson, E. Serrano, B. Kallsner, M. Johansson, B. Enquist, Prediction of Timber Bending Strength and In-member Cross-sectional Stiffness Variation on the Basis of Local Wood Fiber orientation. Eur. J. Wood Prod. 71, 319–333 (2013)CrossRef
23.
Zurück zum Zitat M. Hu, M. Johansson, A. Olsson, J. Oscarsson, B. Enquist, Local variation of modulus of elasticity in timber determined on the basis of non-contact deformation measurement and scanned fiber orientation. Eur. J. Wood Prod. 73, 17–27 (2015)CrossRef M. Hu, M. Johansson, A. Olsson, J. Oscarsson, B. Enquist, Local variation of modulus of elasticity in timber determined on the basis of non-contact deformation measurement and scanned fiber orientation. Eur. J. Wood Prod. 73, 17–27 (2015)CrossRef
24.
Zurück zum Zitat CNS 450 O2001, Wood-sampling methods and general requirements for physical and mechanical tests (2013) CNS 450 O2001, Wood-sampling methods and general requirements for physical and mechanical tests (2013)
Metadaten
Titel
Experimental and Numerical Investigation of Effects of Fiber Orientation of Wood Stiffness
verfasst von
Tzu-Yu Kuo
Wei-Chung Wang
Copyright-Jahr
2017

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