Improving the strength of adhesively bonded joints through the introduction of various surface treatments

Özdemir, Alp; Kocabaş, İbrahim; Švanda, Pavel

doi:10.1080/01694243.2016.1188872

Cited by 12 publications

(3 citation statements)

References 24 publications

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“…The main failure mechanisms of adhesive joints can be generally divided into three modes: failure at the adhesive-adherend interface (adhesive failure); intrinsic failure of the adhesive (cohesive failure); and a mixed mode with both cohesive and adhesive failure. Here, the strength of adhesion at the adhesiveadherend interface is a dominant parameter in the failure mechanism [38]. In Figure 8 From the single lap joint results it becomes evident that not only roughening of the surface and the corresponding triggering of mechanical interlocking and/or increasing the reactive surface area is able to cause a significant increase in shear strength.…”

Section: Single-lap Joint (Slj) Shear Testmentioning

confidence: 97%

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Dam

Abrahami

Yilmaz

et al. 2020

International Journal of Adhesion and Adhesives

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This work focuses on the effect of surface roughness, morphology and chemistry on the initial adhesion strength and corrosive de-adhesion properties of adhesive bonds. Steel surfaces are subjected to different surface pre-treatment methods such as mechanical abrasion, grit blasting, zirconium conversion treatment and silane treatment. Single-lap joint tests were performed to assess the initial bond strengths. Static wedge tests were used to study the loaded environmental ageing of joints and unloaded delamination of adhesive films from the steel surface was studied by means of scanning Kelvin probe (SKP). Experimental results indicate surface roughening plays an important role on the initial adhesion but a minor role in the durability of the bonded steel. The improved initial adhesion is mainly attributed to the increased interfacial bond area at higher surface roughness whereas complex morphology shows a more profound effect on both the initial adhesion and the durability of the interfacial adhesion. In the absence of complex texture, surfaces with altered chemistry by zirconium-or silane treatment exhibit a significant increase of the initial bonding strength and assessment of the interfacial delamination kinetics by SKP reveal that despite the absence of any surface topography, these surfaces prove to have higher resistance to delamination.

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Section: Single-lap Joint (Slj) Shear Testmentioning

confidence: 97%

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Dam

Abrahami

Yilmaz

et al. 2020

International Journal of Adhesion and Adhesives

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show abstract

“…from the areas to be bonded. This is essential to achieve high-strength adhesive joints [18]. Commonly used surface treatments to enhance adhesive bonding performance consist of sanding, grit blasting, peel ply removal, and plasma treatment, among other methods.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric plasma treatment effect on shear strength of GFRP-Aluminum adhesively bonded lap joints

AYAZ,

OZDEMİR,

ERCAN

et al. 2024

IJCESEN

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The objective of this study is to investigate the effect of air (dielectric barrier discharge) DBD plasma treatment on the bonding strength of adhesively bonded glass fiber-reinforced epoxy composite-aluminum lap joints. The bonding performance of lap joints produced by the plasma treatment was compared with that of untreated and peel-ply surface treatments. Water contact angles of the substrates were measured for untreated, peel-ply, and plasma surface-treated substrates. Experimental results showed that plasma-treated aluminum and GFRP substrates increased the wettability properties and thus shear strength of adhesively bonded GFRP-Al joints increased. After the shear tests, the fracture surfaces of the substrates were visually examined and three different damage modes were observed, including light fiber tear failure, adhesive failure, and thin layer cohesive failure modes.

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“…The influence of surface treatment techniques and conditions on single lap joint strength and interfacial properties has been investigated by Ozdemir et al [ 5 ]. They implemented a numerical approach, which is a cohesive zone model, using ABAQUS™ in order to calculate a correlation between maximum interface traction and surface processing parameters, such as surface roughness and work of adhesion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Texture on the Structural Adhesive Joining Properties of Aluminum 7075 and TEPEX®

et al. 2022

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In the process of continuous improvement of manufacturing processes, this study was developed within the framework of the Ecovoss project, based on the inclusion of lightweight and new materials parts in the automotive sector. The objective was based on the replacement of aluminum welding operations with the option of adhesive operations with other types of materials such as polyamides or, in this case, a TEPEX® composite material (Dynalite 202-c200/50% TYP 13). The aim of this work is to test the best texturing of substrate made in 7075 aluminum specimens manufactured by robotic polishing with an ABB 6640 robot. Another substrate is TEPEX composite. A structural adhesive film AF-163-2 from the 3M company (St Paul, Minnesota, US) is used, which must be applied according to the manufacturing procedure. The tests carried out are based on the topographic measurement of the surfaces to be joined with an Alicona focus variation microscope, and the uniaxial shear tests of adhesive samples have been analyzed. The texture of the surface failure has been analyzed, and the results confirm a significant correlation between the texture parameters of initial surfaces and maximum shear stress. The expected results should provide a better understanding of the surfaces aimed to optimize the adhesion of the studied materials.

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Improving the strength of adhesively bonded joints through the introduction of various surface treatments

Cited by 12 publications

References 24 publications

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Effect of surface roughness and chemistry on the adhesion and durability of a steel-epoxy adhesive interface

Atmospheric plasma treatment effect on shear strength of GFRP-Aluminum adhesively bonded lap joints

Effect of Surface Texture on the Structural Adhesive Joining Properties of Aluminum 7075 and TEPEX®

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