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Improving the strength of adhesively bonded joints through the introduction of various surface treatments
Authors: Özdemir Alp | Kocabas Ibrahim | Švanda Pavel
Year: 2016
Type of publication: článek v odborném periodiku
Name of source: Journal of Adhesion Science and Technology
Publisher name: Taylor & Francis Ltd.
Place: Abingdon
Page from-to: 2573-2595
Titles:
Language Name Abstract Keywords
cze Zvýšení pevnosti lepených spojů s využitím modifikace předúpravy povrchu Cílem práce je modelování adheze a mechanismu porušení jednoduše přeplátovaných lepených spojů. Byly vyžity různé předúpravy povrchů ocelových adherendů. Vlastnosti povrchu byly charakterizovány měřením drsnosti a kontaktního úhlu. Hodnocení pevnosti bylo provedeno pomocí pevnosti spojů v tahu. S využitím SW ABAQUS (TM) byly spoje též modelovány a byla hledána korelace mezi vlastnostmi povrchu a pevností spojů. lepidlo; metoda konečných prvků; drsnost povrchu; předúprava povrchu; jednoduše přeplátovaný spoj; konstrukční ocel;
eng Improving the strength of adhesively bonded joints through the introduction of various surface treatments The aim of this paper is to model an interface adhesion and failure mechanism of single lap joints, subjected to tensile loading, focusing on the effects of various surface treatments, including surface characterization parameters, such as surface roughness and contact angle of adherend surfaces. The applied surface treatments are sandblasting, etching, anodic oxidation and hybrid processes. The influence of surface treatment techniques and conditions on single lap joint strength and interfacial properties is investigated by performing a static tensile test. A numerical approach, which is a cohesive zone model, is implemented using ABAQUS (TM) and introduced to create a correlation between maximum interface traction and surface processing parameters, such as surface roughness and work of adhesion. As a result of experiments, an etching plus sanding process was found to provide the best single lap joint performance (8726 N), having surface roughness of Ra = 2.93 mu m and work of adhesion, W-a = 119.4 mJ/m(2). Based on numerical solutions, a correlation between maximum interface traction and type of surface treatment process has been established, taking certain assumptions into consideration. Adhesive; finite-element method; surface roughness; surface treatment; single lap joints; mild steel

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