Effect of surface treatment on adhesively bonded aluminium-aluminium joints regarding aeronautical structures

Correia, Sergio; Anes, Vítor; Reis, L.

doi:10.1016/j.engfailanal.2017.10.010

Cited by 69 publications

(20 citation statements)

References 12 publications

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“…Based on these experimental results, clearly the chemically etched substrate promotes the higher bond strength than the as-received substrate (surface solely wiped with acetone, which is in good agreement with published literature on the effect of surface treatment on the shear strength of aluminum adhesive single-lap-joint in the past literature 30) .In their study, it was argued that the chemically treated of both aluminum substrate provides a higher ECA load of failure as compared to only one substrate is chemically treated 30) .…”

Section: Surfacesupporting

confidence: 90%

“…Overall, adhesive-cohesive failure mode of ECA exhibit higher shear strength as compared to adhesive failure mode, suggesting high adhesion strength between ECA/substrate interface as a result of large surface area of contact between epoxy/substrate interface, which yield in strong mechanical contact 29). Such observation is in agreement with the literature which studied the effect of surface treatment on adhesively bonded aluminium-aluminium joints which argued that the adhesive-cohesive failure showed higher failure loads as compared to those of adhesive type of failure 30) . Moreover, adhesive failure at high MWCNT filler loading suggest low mechanical interlocking strength between epoxy/substrate interface which can be attributed to the presence of large amount of MWCNT particles between epoxy/substrate interface, thus, induced to low surface area of contact between the epoxy/substrate interface.…”

Section: Lap Shear Testsupporting

confidence: 90%

“…The main objective of this study is to investigate the effect of chemical treatment on the aluminum substrate surface towards the mechanical performance of the ECA, with varying MWCNT filler loading, in terms of the lap shear strength. Aluminium alloy is the substrate material of choice since this material is well-known for its useful applications in widespread industries from electronics to aerospace, automotive, general engineering [9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Chemical Surface Treatment on Mechanical Performance of Electrically Conductive Adhesives

Fadzullah¹,

Nasaruddin²,

Mustafa³

et al. 2020

Evergreen

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Adhesion strength of electrically conductive adhesive (ECA) could be enhanced through surface treatment. This paper characterizes the multiwalled carbon nanotube (MWCNT) filled ECA with varying MWCNT filler loading. Here, the focus is on the effect of chemical treatment on aluminium substrate surface treatment onto the adhesion strength of the ECA as per ASTMD 1002. The chemically etched aluminum substrate provides the largest effective bond area between ECA/substrate interface, with the highest shear strength of the ECA. More specifically, the ECA with 6 wt.% MWCNT filler loading exhibit an optimum lap shear strength, showing an adhesive-cohesive failure mode.

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Section: Surfacesupporting

confidence: 90%

Section: Lap Shear Testsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Chemical Surface Treatment on Mechanical Performance of Electrically Conductive Adhesives

Fadzullah¹,

Nasaruddin²,

Mustafa³

et al. 2020

Evergreen

View full text Add to dashboard Cite

show abstract

“…Many studies have shown that the transition from adhesive failure to cohesive failure can greatly improve bond strength. 8,34 If there is a small/large amount of fibers torn in the composite and remaining on the metal surface, the failure mode is defined as light fiber tear/fiber tear failure. Finally, due to the insufficient strength of the metal, the failure occurs inside the metal rather than on the bonding surface, which is designated as stock brake failure.…”

Section: Failure Modes Of Lap Jointsmentioning

confidence: 99%

“…The main ways to improve the load-bearing capacity of composite-metal-bonded structures are to increase the lap size, select appropriate adhesives, and treat the surface. There are many surface treatment methods such as sanding, 3,4 sandblasting, [5][6][7] anodizing, 8,9 and chemical modification. 10 Although these methods have proven to have a positive effect on the interface shear strength, they are time-consuming and uncontrollable for regular geometry.…”

Section: Introductionmentioning

confidence: 99%

Optimization of microstructural morphology via laser processing to enhance the bond strength of Al-CFRP

Liu

Zhu

Xie

et al. 2020

Journal of Reinforced Plastics and Composites

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Generating surface-functional microstructures is an effective way to enhance the bonding strength of metal and carbon fiber-reinforced polymer (CFRP). In this study, different microstructural morphologies consisting of two different patterns were generated on the aluminum alloy (A7075) surface via laser processing. The experimental results indicated that different microstructural morphologies contribute to the enhancement of the shear strength of lap joints. The maximum shear strength of these joints was almost four times stronger than that of lap joints without the microstructures. In addition, the investigation indicated that the shear strength was not only determined by surface roughness and contact area but also by the arrangement of different microstructures. These results are mainly due to the combination of mechanical interlocking and physical adhesion. Finally, the corresponding mechanical models of Al-CFRP lap joints were proposed according to the bonding mechanisms and fracture behaviors.

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Investigation of effects of extreme environment conditions on multiwall carbon nanotube‐epoxy adhesive and adhesive joints

et al. 2022

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Mechanical and thermal properties of epoxy‐multiwall carbon nanotubes (MWCNTs) at different fractions (0.0, 0.25, 0.5, and 1.0 wt%) were investigated. The dispersion of the nanotubes in an epoxy adhesive commonly used in an automotive application was performed using a grease worker. This device has a perforated plate, able to produce mechanical shear. To investigate the behavior of adhesive‐carbon nanotubes mixtures and the bonding performance, four groups were prepared using two different perforated plates, P1 and P2. All MWCNT‐epoxy were submitted to extreme environmental conditions, resumed as reference (non‐aged), 500 h at 100°C, 500 h at 95% of relative humidity at 40°C, and 500 h under salt spray. A reduction in glass transition temperature was observed with the addition of the nanofiller and no increases on statistic heat‐resistant index temperature were noticed in MWCNT‐epoxy produced using both plates. Changes in the peaks at 3300, 1510, and 835 cm−1 after aging were seen in infrared spectra. The MWCNT addition to pure epoxy increased the apparent shear strength by 14% using P1. In P2, which has the mechanical shear greater by a factor of 2, no significant differences were observed, due to defects and agglomeration of MWCNTs observed by image analysis.

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Effect of surface treatment on adhesively bonded aluminium-aluminium joints regarding aeronautical structures

Cited by 69 publications

References 12 publications

The Effect of Chemical Surface Treatment on Mechanical Performance of Electrically Conductive Adhesives

The Effect of Chemical Surface Treatment on Mechanical Performance of Electrically Conductive Adhesives

Optimization of microstructural morphology via laser processing to enhance the bond strength of Al-CFRP

Investigation of effects of extreme environment conditions on multiwall carbon nanotube‐epoxy adhesive and adhesive joints

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