Bonding dissimilar materials via adhesively bonded spot-welded joints: cohesive zone model technique

Paygozar, Bahman; Dizaji, Shahram Abbasnejad; Silva, Lucas F. M. da

doi:10.1080/01694243.2020.1761043

Cited by 13 publications

(5 citation statements)

References 17 publications

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“…Cohesive zone parameters, such as normal critical energy release and shear critical energy release, are listed in Table 1 . Similar material properties have been used in numerical simulations throughout the literature [ 38 ]. The bilinear constitutive relation of the cohesive element was used in this study to mimic the adhesive layer failure mechanism.…”

Section: Methodsmentioning

confidence: 99%

Nanoimprint Mold Consisting of an Adhesive Lap Joint between a Nanopatterned Metal Sleeve and a Carbon Composite Roll

2023

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Roll-to-roll nanoimprinting is an emerging technology that has revolutionized the sectors of flexible electronics, thin films, and solar cells with its high throughput. However, there is still room for improvement. In this study, a FEM analysis (in ANSYS) was carried out on a large-area roll-to-roll nanoimprint system in which the master roller consists of a large nanopatterned nickel mold joined to a carbon fiber reinforced polymer (CFRP) base roller using epoxy adhesive. Deflections and pressure uniformity of the nano-mold assembly were analyzed under loadings of different magnitudes in a roll-to-roll nanoimprinting setup. Optimization of deflections was performed with applied loadings, and the lowest deflection value was 97.69 nm. The adhesive bond viability was assessed under a range of applied forces. Finally, potential strategies to reduce deflections were also discussed, which can be helpful in increasing pressure uniformity.

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Section: Methodsmentioning

confidence: 99%

Nanoimprint Mold Consisting of an Adhesive Lap Joint between a Nanopatterned Metal Sleeve and a Carbon Composite Roll

2023

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“…2a. Moreover, to validate the DSJs with GFRP straps, the 3D CZM technique, validated in the previous work of the authors [29], was used in order to find the failure load of one sample. Subsequently, the outcomes were compared with those of 2D CZM technique employed in this study for validation purposes.…”

Section: Validation Proceduresmentioning

confidence: 99%

Adhesively bonded aluminium double-strap joints: effects of patch part on failure load

Paygozar

Sadigh

Silva

2020

J Braz. Soc. Mech. Sci. Eng.

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This study aims to predict the failure loads of adhesive double-strap joints (DSJs) with the help of validated finite element (FE) analyses performed in a commercial FE package (ABAQUS/Standard). The damage initiation and propagation in the adhesive was evaluated by a cohesive zone model. The effects of the patch part (i.e. material, length and thickness of the patch) on the failure load of the DSJs joints are investigated. In addition, a stress analysis of the adherends and patch part is performed to provide insights into the stress distribution in the materials, thereby avoiding potential premature or unsuitable failure in the different parts of the joints. It is revealed that the dimensions of the patch can have measurable influences on the failure load and the stress distribution in different parts of the joint which may threaten the suitable performance of the joints. Moreover, the results obtained from the joints with both aluminium and composite straps are almost the same, although considering the weight added to the system, the latter outweighs the other.

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“…A dhesive bonding of materials is employed in several industries, including aeronautical, automotive, and maritime, due to their important characteristics. They possess several merits like good fatigue performance, lesser added weight, limited stress concentrations, and high loading capacity, which makes them a feasible method in attaching both similar and dissimilar materials [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Effects of Silica/Clay Nanoparticles on Microstructural and Mechanical Properties of Epoxy Based Adhesives

DİZECİ

Kandemir

2023

Hacettepe Journal of Biology and Chemistry

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Improving the mechanical properties of the epoxy-based adhesives with nanoparticles is one of the methods which justifies the use of adhesive joints significantly. This work studies the strength of adhesively bonded single-lap joints (SLJs) considering the pure adhesive, the reinforced adhesive with nano-silica particles (NSPs), nano-clay particles (NCPs), and a combination of both nano particles. Uniaxial tensile testing of the SLJs was conducted to reveal the failure loads of the joints and their elongations at failure. Furthermore, Scanning electron microscope (SEM) images and X-ray Diffraction (XRD) Analyses were used to investigate dispersion quality. It was observed that the use of just 1 wt.% NCPs or 2 wt.% NSPs improve the failure load significantly whereas the combination of both particles generally leads to large agglomerations. It is also concluded that the dispersion quality is a key to improve the strength by shifting the failure mechanism from adhesion to cohesion type.

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Bonding dissimilar materials via adhesively bonded spot-welded joints: cohesive zone model technique

Cited by 13 publications

References 17 publications

Nanoimprint Mold Consisting of an Adhesive Lap Joint between a Nanopatterned Metal Sleeve and a Carbon Composite Roll

Nanoimprint Mold Consisting of an Adhesive Lap Joint between a Nanopatterned Metal Sleeve and a Carbon Composite Roll

Adhesively bonded aluminium double-strap joints: effects of patch part on failure load

Effects of Silica/Clay Nanoparticles on Microstructural and Mechanical Properties of Epoxy Based Adhesives

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