Evaluation of a structural epoxy adhesive for timber-glass bonds under shear loading and different environmental conditions |
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| Affiliation: | 1. Mechanical Engineering Department, Indian Institute of Technology, Bombay 400076, India;2. Mechanical Engineering Department, National Institute of Technology, Warangal 506004, India;3. Faculty of Management and Computer Modeling, Kielce University of Technology, 25-314 Kielce, Poland;1. Department of Civil, Environmental, and Architectural Engineering University of Colorado Boulder, ECOT 441 UCB 428, Boulder, CO 80309-0428, USA;2. Department of Mechanical and Industrial Engineering Montana State University, P.O. Box 173800, Bozeman, MT 59717-3800, USA;1. Institut de Mécanique des Fluides de Toulouse (IMFT), Université de Toulouse, CNRS, INPT, UPS, Toulouse, France;2. IFP Energies nouvelles, Rond-point de l’échangeur de Solaize, BP 3, 69360 Solaize, France;1. Faculty of Chemistry, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszow, Poland;2. Centre of Advanced Technologies, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland;3. Poznań Science and Technology Park, A. Mickiewicz University Foundation, Rubie? 46, 61-612 Poznan, Poland;4. Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland;1. Department of Engineering, University of Ferrara, via Saragat 1, I-44122 Ferrara, Italy;2. CNR-IVALSA, Istituto per la Valorizzazione del Legno e delle Specie Arboree, via Madonna del Piano 10, I-50019 Sesto Fiorentino, FI, Italy;1. ESIME Azcapotzalco, Instituto Politécnico Nacional, Avenida de las Granjas No. 682, Colonia Santa Catarina, Delegación Azcapotzalco, Ciudad de México 02250, Mexico;2. UMDI, Facultad de Ciencias, Universidad Nacional Autónoma de México, Sisal, Yucatán, Mexico;3. Chemical Kinetics Laboratory, Institute of Chemistry, Eötvös Lorand University, ELTE, Budapest, Hungary |
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| Abstract: | This article presents a study of timber-glass adhesive joints. It examines the shear specimen and shear tools preparation process and the evaluation of the results backed up with an overview of existing similar studies. The chosen adhesive was a cold-curing two-component structural bonding epoxy resin (Mapei Adesilex PG1). The shear tests were performed under different temperatures and the timber samples had different moisture contents. A simple shear test tool was designed and was clamped into a universal testing machine for the shear test. The force and crosshead displacement values from the universal testing machine were used for evaluating the results. The environmental conditions of 20 °C and 5% timber moisture content resulted in the highest average shear strength obtained from the shear tests of the analysed joints (9.89 MPa), whereas the environmental conditions of 50 °C and 20% timber moisture content resulted in the lowest average shear strength (3.42 MPa). It was found that the joint strength is dependent on the environmental temperature and timber moisture content. Moreover, the shear specimen load-displacement behaviour at the environmental temperature of 50 °C was linear and nonlinear – depending on the timber moisture content. The most frequent failure type was timber failure. Additionally, a nonlinear contact finite element analysis was performed to demonstrate the additional shear specimen rotation due to the clearance between the shear specimen and shear tools. This impact was evaluated regarding the stress distribution in the bond line. The evaluated epoxy resin adhesive was proved to be suitable for timber-glass bonds. |
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| Keywords: | Epoxides A Glass B Wood and wood composites B Finite element stress analysis C Shear test Varying environmental conditions |
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