Mechanical performance and damage analysis of GNP-reinforced adhesively bonded joints under shear and bending loads

Çakır, Mehmet Veysel; Özbek, Özkan

doi:10.1080/00218464.2022.2060743

Cited by 14 publications

(12 citation statements)

References 67 publications

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“…As it is shown in previous studies, 37,38,46 the addition of multifunctional epoxy resin, curing agent and fillers can lead to increased density and strength of crosslinking, while restricting the dynamism of polymer chains and thus, increasing adhesion strength. On the other hand, appropriate distribution of the filler and its better interaction with the adhesive matrix can result in the formation of a strong interface, better stress transfer, increased crosslinking density, and, hence, enhanced adhesion strength 42,45,47 . However weak bonding capability between the epoxy resin and metals is a prominent drawback in the design of engineering structures improved by adhesives 48 .…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, carboxyl groups on the surfaces of c‐MWCNT particles are predicted to create a powerful bond between the adhesive and the surfaces. Therefore, it is necessary to exert more energy to overcome interfacial bonding 31,32,47 …”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, appropriate distribution of the filler and its better interaction with the adhesive matrix can result in the formation of a strong interface, better stress transfer, increased crosslinking density, and, hence, enhanced adhesion strength. 42,45,47 However weak bonding capability between the epoxy resin and metals is a prominent drawback in the design of engineering structures improved by adhesives. 48 Furthermore, powerful interaction between the adhesive and the substrate can be occurred by the addition of the fillers that may increase the adhesion strength.…”

Section: Lap Shear Strength Analysis Of Metal Bonding Samples To Comp...mentioning

confidence: 99%

See 2 more Smart Citations

A novel epoxy adhesive with ground rubber tire powder and carboxylated multiwalled carbon nanotubes

Kazemi Esfeh,

Arefinia,

Moini Jazani

et al. 2023

Polymer Composites

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The present study was an attempt to improve the toughness, mechanical and adhesion properties, and thermal stability of a two‐phase epoxy DGEBA/Resole phenolic resin through the use of carboxyl‐modified multi‐walled carbon nanotubes (c‐MWCNTs) and ground rubber tire (GRT) powder. The effect of a hybrid reinforcement containing GRT and c‐MWCNT blend on the mechanical properties, thermal stability, and microstructure of the epoxy‐phenolic adhesive were evaluated by tensile test, TGA, and FESEM, respectively. The formulated adhesive was utilized in a lap joint metal to a composite in order to peruse the adhesion features, where the composite was an epoxy resin reinforced with carbon fibers and the metal was stainless steel 316 L. According to the tensile test, there were 32% rise in tensile strength, 27% rise in modulus, and a 64% rise in toughness with adding 0.5% wt c‐MWCNTs and 15 phr waste GRT powder to the epoxy‐phenolic matrix. Furthermore, adding 1% wt c‐MWCNTs of nanoparticles and GRT powder has resulted in a 15% increase in lap shear strength. It also can be seen that thermal stability for the formulated samples has experienced an upward trend compared to the neat epoxy composite.Highlights Epoxy adhesives based on GRT Powder, c‐MWCNTs particles and phenolic resin have been successfully prepared. The hybrid uses of GRT Powder and c‐MWCNTs particles can synergistically increase the tensile and lap shear strength The addition of c‐MWCNT nano particles and GRT Powder in an epoxy adhesive can have a dramatic rise in the toughness system compared to the neat epoxy adhesive. Maximum degradation temperature of the produced newly adhesive has increased considerably in contrast with the neat epoxy adhesive.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Lap Shear Strength Analysis Of Metal Bonding Samples To Comp...mentioning

confidence: 99%

See 1 more Smart Citation

A novel epoxy adhesive with ground rubber tire powder and carboxylated multiwalled carbon nanotubes

Kazemi Esfeh,

Arefinia,

Moini Jazani

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Composites have been preferred in aerospace, naval applications, or academic studies, owing to their superior and privileged properties, design flexibility, and ease of production. [1][2][3] Although it has superior properties, this innovative material class shows different mechanical properties, especially in non-dry environments. Determining the durability of composite materials when exposed to water/moisture or after being kept in different environments is extremely important in terms of learning the mechanical properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An experimental study on the hydrothermal aging effect on the free vibration properties of hybrid aramid/glass/epoxy composites: Comparison of sea water and distilled water

Doğan,

Oğuz,

Erkliğ

2023

Polymer Composites

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The purpose of this experimental work is to investigate the impact of hydrothermal aging on the viscoelastic characteristics of hybrid aramid/glass/epoxy composites. In addition to the hybrid composites prepared by vacuum infusion method in two different hybrid configurations ([G3A3]S, [A3G3]S) and two non‐hybrid composite groups ([G6]S, [A6]S) were included for comparison purposes. Composite samples were kept in 4 different aging environments (distilled water 25°C, distilled water 70°C, seawater 25°C, and seawater 70°C) for 6 weeks. To assess the dynamic properties (natural frequency and damping ratio) of composites, a free vibration test was conducted. The vibration test results of the samples were calculated by the half‐power bandwidth method. The results revealed that hydrothermal aging did not have serious effects on first‐mode natural frequency. It was observed that the damping ratios of hybrid composites increased after hydrothermal aging when compared with unaged samples. The results from dynamic aspects like the storage modulus and loss modulus were consistent among themselves. The parameters of the storage modulus and loss modulus have both decreased as a result of hydrothermal aging. In addition, the results proved that the rise in temperature accelerated the degradation in mechanically deteriorated composite materials. It was also found that aging in seawater was induced to more deterioration of hybrid and non‐hybrid composite materials.Highlights The order of the fabrics play an important role in free vibration properties of hybrid composites. Aging hybrid composites at different temperatures affects their free vibration properties. and values decreased more as the temperature increased. Hydrothermal aging has increased the dumping ratio values of composite materials.

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The synergistic effect of hybrid nano-silica and GNP additives on the flexural strength and toughening mechanisms of adhesively bonded joints

Çakır

2023

International Journal of Adhesion and Adhesives

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Mechanical performance and damage analysis of GNP-reinforced adhesively bonded joints under shear and bending loads

Cited by 14 publications

References 67 publications

A novel epoxy adhesive with ground rubber tire powder and carboxylated multiwalled carbon nanotubes

A novel epoxy adhesive with ground rubber tire powder and carboxylated multiwalled carbon nanotubes

An experimental study on the hydrothermal aging effect on the free vibration properties of hybrid aramid/glass/epoxy composites: Comparison of sea water and distilled water

The synergistic effect of hybrid nano-silica and GNP additives on the flexural strength and toughening mechanisms of adhesively bonded joints

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