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The Characteristics of Glued Tensile Shear Strength Constituted of Wood Cut by CO2 Laser

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dc.abstract.enThe performance of engineered wood products is highly associated with proper bonding and an efficient cutting method. This paper investigates the influence of CO2 laser cutting on the wetting properties, the modified chemical component of the laser-cut surface, and the strength and adhesive penetration near the bondline. Beechwood is cut by the laser with varying processing parameters, cutting speeds, gas pressures, and focal point positions. The laser-cut samples were divided into two groups, sanded and non-sanded samples. Polyvinyl acetate adhesive (PVAc) was used to bond the groups of laser-cut samples. After assembly with cold pressing, the tensile shear test was carried out. Numerical modelling was carried out to determine the partial elongation and shear strain of the glue line. Based on this, the shear modulus and linear elasticity of the glue line were estimated. Scanning 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 zone. The laser-cut surface was analysed by Fourier transform infrared spectroscopy. The wetting properties of the laser-cut surface were investigated by using a contact angle goniometer. The numerical model of the strain-stress curve confirmed the experimental model. The 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 samples was similar to that of sawn samples. The deepest heat-affected zone in the laser-cut samples was 150 µm. A PVAc drop disappeared immediately on the laser-cut surface without sanding, but gradually on the sanded surface. In contrast, the drop on the sawn surface remained with an angle of 32°–48°. The degradation of hemicellulose and lignin was proven by the lower intensity of the C=O and C-O Bonds, compared to the sawn surface.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Meblarstwa
dc.contributor.authorRezaei, Fatemeh
dc.contributor.authorGaff, Milan
dc.contributor.authorNemeth, Robert
dc.contributor.authorSmardzewski, Jerzy
dc.contributor.authorNiemz, Peter
dc.contributor.authorLi, Haitao
dc.contributor.authorKumar Sethy, Anil
dc.contributor.authorTodaro, Luigi
dc.contributor.authorKamboj, Gourav
dc.contributor.authorDas, Sumanta
dc.contributor.authorCorleto, Roberto
dc.contributor.authorDitommaso, Gianluca
dc.contributor.authorBak, Miklós
dc.date.access2025-07-04
dc.date.accessioned2025-10-27T11:54:40Z
dc.date.available2025-10-27T11:54:40Z
dc.date.copyright2023-06-26
dc.date.issued2023
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.number8
dc.description.points20
dc.description.versionfinal_published
dc.description.volume11
dc.identifier.doi10.32604/jrm.2023.028352
dc.identifier.eissn2164-6341
dc.identifier.issn2164-6325
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5481
dc.identifier.weblinkhttps://www.sciencedirect.com/org/science/article/pii/S2164632523000975
dc.languageen
dc.relation.ispartofJournal of Renewable Materials
dc.relation.pages3277-3296
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enCO2 laser
dc.subject.encutting speed
dc.subject.enfocal point position
dc.subject.engas pressure
dc.subject.englued tensile shear strength
dc.titleThe Characteristics of Glued Tensile Shear Strength Constituted of Wood Cut by CO2 Laser
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue8
oaire.citation.volume11