Dynamic Property of Cross-Laminated Woods Made with Temperate Seven Species

1) In this study, cross-laminated wood panels were manufactured with four softwoods and three hardwoods with the goal of efficiently predicting the static strength performance using dynamic modulus of elasticity (MOE) and simultaneously revealing the dynamic performance of cross-laminated wood panels. The effect of the density of the species on the dynamic MOE of the laminated wood panels was investigated. Moreover, the static bending strength performance was predicted nondestructively through the correlation regression between the dynamic MOE and static bending strength performance. For the dynamic MOE, the paralleland cross-laminated wood panels composed of oriental oak showed the highest value, whereas the laminated wood panels composed of Japanese cedar showed the lowest value. In all types of paralleland cross-laminated wood panels, the density dependence was confirmed, and the extent of the density dependence was found to be greater in the P⊥ and C⊥ types with perpendicular-direction laminae in the faces than in the P∥ and C∥ types with longitudinal-direction laminae in the faces. Our findings confirmed that a high correlation exists at a significance level of 1% between the dynamic modulus and static bending modulus or bending strength in all types of laminated wood panels, and that the static bending strength performance can be predicted through the dynamic MOE.

[1]  S. Kang,et al.  Evaluation of Flexural Performance According to the Plywood Bonding Method of Ply-Lam CLT , 2021, Journal of the Korean Wood Science and Technology.

[2]  S. Kang,et al.  A Study on the Block Shear Strength according to the Layer Composition of and Adhesive Type of Ply-Lam CLT , 2020, Journal of the Korean Wood Science and Technology.

[3]  H. Byeon,et al.  Bending Creep Properties of Cross-Laminated Wood Panels Made with Tropical Hardwood and Domestic Temperate Wood , 2020, Journal of the Korean Wood Science and Technology.

[4]  S. Yoo,et al.  Study on the Mechanical Properties of Tropical Hybrid Cross Laminated Timber Using Bamboo Laminated Board as Core Layer , 2020, Journal of the Korean Wood Science and Technology.

[5]  S. Sunarti,et al.  Variation in Tree Growth Characteristics, Pilodyn Penetration, and Stress-wave Velocity in 65 Families of Acacia mangium Trees Planted in Indonesia , 2019, Journal of the Korean Wood Science and Technology.

[6]  Hyoung-woo Lee,et al.  Lateral Resistance of CLT Wall Panels Composed of Square Timber Larch Core and Plywood Cross Bands , 2019, Journal of the Korean Wood Science and Technology.

[7]  C. Kang,et al.  Sound Absorption Rate and Sound Transmission Loss of CLT Wall Panels Composed of Larch Square Timber Core and Plywood Cross Band , 2019, Journal of the Korean Wood Science and Technology.

[8]  Jae-Kyung Yang,et al.  Static Bending Performances of Cross-Laminated Wood Panels Made with Tropical and Temperate Woods , 2018, Journal of the Korean Wood Science and Technology.

[9]  Jae-Kyung Yang,et al.  STATIC BENDING STRENGTH PERFORMANCES OF CROSS-LAMINATED WOOD PANELS MADE WITH SIX SPECIES , 2016 .

[10]  Jae-Kyung Yang,et al.  Effect of Green Tea Content on Dynamic Modulus of Elasticity of Hybrid Boards Composed of Green Tea and Wood Fibers, and Prediction of Static Bending Strength Performances by Flexural Vibration Test , 2011 .

[11]  HanMinPark,et al.  Measurement of Dynamic MOE of 3-Ply Laminated Woods by Flexural Vibration and Comparison with Blending Strength and Creep Performances , 2006 .

[12]  Chul-Hwan Kim,et al.  Nondestructive evaluation of strength performance for finger-jointed wood using flexural vibration techniques , 2005 .

[13]  H. Byeon,et al.  Nondestructive Evaluation of Bending Strength Performances for Red Pine Containing Knots Using Flexural Vibration Techniques , 2005 .

[14]  HanMinPark,et al.  Effect of Finger Profile on Static Bending Strength Performance of Finger-Jointed Wood , 2004 .

[15]  Joshua Ayarkwa,et al.  Predicting modulus of rupture of solid and finger-jointed tropical African hardwoods using longitudinal vibration , 2000 .

[16]  Jang SangSik,et al.  Evaluation of lumber properties by applying stress waves to larch logs grown in Korea. , 2000 .

[17]  D. A. Bender,et al.  Predicting localized MOE and tensile strength in solid and finger-jointed laminating lumber using longitudinal stress waves. , 1990 .