Research on strength of nanocomposite adhesively bonded composite joints

Akpinar, İclal Avinc; Gülteki̇n, Kürşat; Akpinar, Salih; Akbulut, Hamit; Özel, Adnan

doi:10.1016/j.compositesb.2017.06.016

Cited by 55 publications

(11 citation statements)

References 28 publications

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“…Researchers at North Carolina State University have developed a method to straighten the carbon nanotubes as the nanotube-polymer composite is being formed. They found that straightening the nanotubes increased the tensile strength of the nanotube-polymer composite, as well as improving the electrical and thermal conductivity [119].…”

Section: Stronger Materials/high Strength Compositesmentioning

confidence: 99%

General Evaluations of Nanoparticles

Koçak

Karasu

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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Nanoparticles have actually been in our lives for many years and begun to possess inevitable place in the life cycle with the gradual development of nanotechnology. Recent studies and improvement indicate that the use of nanoparticles will be expected to increase in many areas such as biology, medicine, engineering and optics in the future. In this review, nanoparticles, their applications, damage and damage prevention methods are discussed.

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Section: Stronger Materials/high Strength Compositesmentioning

confidence: 99%

General Evaluations of Nanoparticles

Koçak

Karasu

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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“…The aim of this work is to exploit the superb physical properties of CNTs in developing novel multifunctional adhesives with an inherent self-sensing capability. To date, most research into reinforced bonded joints has been focused on paste adhesives [18][19][20][21]. They exhibit excellent sensing properties and are capable of properly monitoring strain and debonding [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Electrical Monitoring as a Novel Route to Understanding the Aging Mechanisms of Carbon Nanotube-Doped Adhesive Film Joints

et al. 2020

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Carbon fiber-reinforced plastic bonded joints with novel carbon nanotube (CNT) adhesive films were manufactured and tested under different aging conditions by varying the surfactant content added to enhance CNT dispersion. Single lap shear (SLS) tests were conducted in their initial state and after 1 and 2 months immersed in distilled water at 60 °C. In addition, their electrical response was measured in terms of the electrical resistance change through thickness. The lap shear strength showed an initial decrease due to plasticization of weak hydrogen bonds, and then a partial recovery due to secondary crosslinking. This plasticization effect was confirmed by differential scanning calorimetry analysis with a decrease in the glass transition temperature. The electrical response varied with aging conditions, showing a higher plasticity region in the 1-month SLS joints, and a sharper increase in the case of the non-aged and 2-month-aged samples; these changes were more prevalent with increasing surfactant content. By adjusting the measured electrical data to simple theoretical calculations, it was possible to establish the first estimation of damage accumulation, which was higher in the case of non-aged and 2-month-aged samples, due to the presence of more prevalent brittle mechanisms for the CNT-doped joints.

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“…Moreover, CNTs have also been demonstrated to be an effective reinforcements for adhesive joints. In fact, their addition usually leads to an increase of the lap shear strength (LSS), and specifically the mode-I fracture energy, due to the previously commented toughening effect of CNTs, as well as their good crack-bridging capabilities [ 25 , 26 , 27 , 28 , 29 ]. In addition, they can act as effective corrosion barriers [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Crack-Sensing Capabilities of Mode-I Joints with Carbon-Nanotube-Reinforced Adhesive Films under Hydrothermal Aging Conditions

et al. 2020

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The fracture behavior and crack sensing of mode-I joints with carbon nanotube (CNT)-reinforced adhesive films were explored in this paper under hydrothermal aging conditions. The measured fracture energy of CNT-reinforced joints in grit blasting conditions is higher for non-aged samples than for neat adhesive joints (around 20%) due to the nanofiller toughening and crack bridging effects. However, in the case of brushed surface-treated adherents, a drastic decrease is observed with the addition of CNTs (around 70%) due to the enhanced tribological properties of the nanofillers. Hydrothermal aging has a greater effect in the CNT-reinforced samples, showing a more prevalent plasticization effect, which is confirmed by the R-curves of the specimens. The effects of surface treatment on the crack propagation properties was observed by electrical resistance monitoring, where brushed samples showed a more unstable electrical response, explained by more unstable crack propagation and reflected by sharp increases of the electrical resistance. Aged specimens showed a very uniform increase of electrical resistance due to slower crack propagation, as induced by the plasticization effect of water. Therefore, the proposed adhesive shows a high applicability for crack detection and propagation without decreasing the mechanical properties.

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Research on strength of nanocomposite adhesively bonded composite joints

Cited by 55 publications

References 28 publications

General Evaluations of Nanoparticles

General Evaluations of Nanoparticles

Electrical Monitoring as a Novel Route to Understanding the Aging Mechanisms of Carbon Nanotube-Doped Adhesive Film Joints

Mechanical and Crack-Sensing Capabilities of Mode-I Joints with Carbon-Nanotube-Reinforced Adhesive Films under Hydrothermal Aging Conditions

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