The Characteristics of Glued Tensile Shear Strength Constituted of Wood Cut by CO_(2) Laser

作     者：Fatemeh Rezaei Milan Gaff Róbert Nemeth Jerzy Smardzewski Peter Niemz Haitao Li Anil Kumar Sethy Luigi Todaro Gourav Kamboj Sumanta Das Roberto Corleto Gianluca Ditommaso Miklós Bak 

作者机构：Department of Wood ProcessingFaculty of Forestry and Wood SciencesCzech University of Life Sciences PraguePrague16521Czech Republic Department of Wood Science and EngineeringOregon State UniversityCorvallisORUSA Department of FurnitureDesign and Habitat BrnoMendel University in BrnoBrno61300Czech Republic Experimental CentreFaculty of Civil EngineeringCzech Technical University in PraguePrague16629Czech Republic Institute of Wood Technology and Technical SciencesUniversity of SopronSopron9400Hungary Department of Furniture DesignFaculty of Forestry and Wood TechnologyPoznan University of Life SciencesPoznan60637Poland ETH ZurichInstitute for Building MaterialsLulea University of TechnologyZurichCH8093Switzerland School of Civil EngineeringNanjing Forestry UniversityNanjingChina Joint International Research Laboratory of Bio-Composite BuildingMaterials and StructuresNanjing Forestry UniversityNanjingChina Wood Properties and ProcessingInstitute of Wood Science and TechnologyBangalore560003India School of Agricultural ForestryFoodand Environmental ScienceUniversity of BasilicataPotenza85100Italy 

出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)

年 卷 期：2023年第11卷第8期

页      面：3277-3296页

核心收录：

学科分类：082902[工学-木材科学与技术] 08[工学] 0829[工学-林业工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Czech University of Life Science Department of Wood Processing and Biomaterials 

主　　题：CO_(2)laser cutting speed focal point position gas pressure glued tensile shear strength 

摘      要：The performance of engineered wood products is highly associated with proper bonding and an efficient cutting *** paper investigates the influence of CO_(2) laser cutting on the wetting properties,the modified che-mical component of the laser-cut surface,and the strength and adhesive penetration near the ***-wood is cut by the laser with varying processing parameters,cutting speeds,gas pressures,and focal point *** laser-cut samples were divided into two groups,sanded and non-sanded *** acetate adhesive(PVAc)was used to bond the groups of laser-cut *** assembly with cold pressing,the tensile shear test was carried *** modelling was carried out to determine the partial elongation and shear strain of the glue *** on this,the shear modulus and linear elasticity of the glue line were ***-ning electron microscopy was used to assess the adhesive penetration into the porosity structure of the laser-cut samples,and the depth of the heat-affected *** laser-cut surface was analysed by Fourier transform infrared *** wetting properties of the laser-cut surface were investigated by using a contact angle *** numerical model of the strain-stress curve confirmed the experimental *** highest modulus of the linear elasticity of the glue in the numerical calculation belongs to the joint containing laser-cut samples at a gas pressure of 21(bar).The penetration depth of PVAc adhesive into the porosity structure of the laser-cut sam-ples was similar to that of sawn *** deepest heat-affected zone in the laser-cut samples was 150µm.A PVAc drop disappeared immediately on the laser-cut surface without sanding,but gradually on the sanded *** contrast,the drop on the sawn surface remained with an angle of 32°–48°.The degradation of hemi-cellulose and lignin was proven by the lower intensity of the C=O and C-O Bonds,compared to the sawn surface.