High velocity impact damage investigation of carbon/epoxy/clay nanocomposites using 3D Computed Tomography

Murugan, Pushparaja; Naresh, K.; Shankar, K.; Ramachandran, V.; Balaganesan, G.

doi:10.1016/j.matpr.2018.04.098

Cited by 25 publications

(10 citation statements)

References 18 publications

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“…The 60° fibre orientation composite showed an uneven distribution of load due to the nonlinearity of axial and shear deformation that produced high delamination area. Similar results were found in the investigation of Murugan et al [ 29 ].…”

Section: Resultssupporting

confidence: 92%

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Impact Response and Damage Tolerance of Hybrid Glass/Kevlar-Fibre Epoxy Structural Composites

et al. 2021

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The present study is aimed at investigating the effect of hybridisation on Kevlar/E-Glass based epoxy composite laminate structures. Composites with 4 mm thickness and 16 layers of fibre (14 layers of E-glass centred and 2 outer layers of Kevlar) were fabricated using compression moulding technique. The fibre orientation of the Kevlar layers had 3 variations (0, 45 and 60°), whereas the E-glass fibre layers were maintained at 0° orientation. Tensile, flexural, impact (Charpy and Izod), interlaminar shear strength and ballistic impact tests were conducted. The ballistic test was performed using a gas gun with spherical hard body projectiles at the projectile velocity of 170 m/s. The pre- and post-impact velocities of the projectiles were measured using a high-speed camera. The energy absorbed by the composite laminates was further reported during the ballistic test, and a computerised tomographic scan was used to analyse the impact damage. The composites with 45° fibre orientation of Kevlar fibres showed better tensile strength, flexural strength, Charpy impact strength, and energy absorption. The energy absorbed by the composites with 45° fibre orientation was 58.68 J, which was 14% and 22% higher than the 0° and 60° oriented composites.

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Section: Resultssupporting

confidence: 92%

“…The 0° composite has ‘through’ hole due to impact of the projectile at a concentrated load. Murugan et al [ 29 ] reported that the higher the cone radius, the lower is the energy absorption. As explained, the 60° orientation had a high cone radius and lower energy absorption compared to the other two fibre orientations.…”

Section: Resultsmentioning

confidence: 99%

Impact Response and Damage Tolerance of Hybrid Glass/Kevlar-Fibre Epoxy Structural Composites

et al. 2021

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“…The addition of suitable nano-fillers in the epoxy resin was found to enhance the thermal conductivity, temperature–frequency-dependent viscoelastic properties, fatigue life, and fracture toughness [ 6 ]. The high surface area of nano-fillers can potentially improve the interfacial bonding with the polymer chains, resulting in enhanced thermal stability and energy absorption capability of the nanocomposite [ 7 , 8 , 9 ]. Recently, nanoparticles such as carbon black, carbon nanotubes (CNTs), and graphene have found potential use as fillers in polymer matrix composites (PMCs) [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites

2021

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Thermomechanical modeling of epoxy/graphene oxide under quasi-static and dynamic loading requires thermo-mechanical properties such as Young’s modulus, Poisson’s ratio, thermal conductivity, and frequency-temperature dependent viscoelastic properties. In this study, the effects of different graphene oxide (GO) concentrations (0.05, 0.1, and 0.2 wt%) within an epoxy matrix on several mechanical and thermal properties were investigated. The distribution of GO fillers in the epoxy was investigated using transmission electron microscopy (TEM). The digital image correlation (DIC) technique was employed during the tensile testing to determine Young’s modulus and Poisson’s ratio. Analytical models were used to predict Young’s modulus and thermal conductivity, with an error of less than 13% and 9%, respectively. Frequency–temperature dependent phenomenological models were proposed to predict the storage moduli and loss tangent, with a reasonable agreement with experimental data. A relatively high storage modulus, heat-resistance index (THRI), and thermal conductivity were observed in 0.2 wt% nanocomposite samples compared with pure epoxy and other lower concentration GO nanocomposites. A high THRI and derivative of thermogravimetric analysis peak temperatures (Tm1 and Tm2) were exhibited by adding nano-fillers in the epoxy, which confirms higher thermal stability of nanocomposites than that of pristine epoxy.

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“…In recent years, XCT imaging have been used to detect the damage behaviors of fiber reinforced composites in drop-weight and ballistic impact experiments. 87,[142][143][144][145][146] Bull et al 85 performed multi-scale 3D X-ray inspections, as shown in Figure 43, including micro-focus XCT and synchrotron radiation-computed laminography analyses of low velocity impact damage in CFRP. The lower resolution images indicated that the particle-toughening system suppresses delamination with very little effect on intralaminal damage.…”

Section: Mechanical Properties Of the Fiber Reinforced Compositesmentioning

confidence: 99%

A review of applications of CT imaging on fiber reinforced composites

Gao

Xin

et al. 2021

Journal of Composite Materials

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With the development of X-ray computed tomography over the last few decades, it is gradually considered to be a powerful tool in the field of materials research. This paper presents a comprehensive review of applications of CT imaging on fiber reinforced composites, from polymer composites to ceramic matrix composites. The principle of X-ray CT and experimental tomography setups was described firstly. Then, in situ experimental devices developed in recent years were illustrated. Furthermore, the applications of X-ray CT imaging on manufacturing process, modeling, mechanical damage, physical, and chemical behaviors were reviewed in detail. Besides, advantages and limitations of X-ray CT imaging were pointed out and the future development was prospected.

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High velocity impact damage investigation of carbon/epoxy/clay nanocomposites using 3D Computed Tomography

Cited by 25 publications

References 18 publications

Impact Response and Damage Tolerance of Hybrid Glass/Kevlar-Fibre Epoxy Structural Composites

Impact Response and Damage Tolerance of Hybrid Glass/Kevlar-Fibre Epoxy Structural Composites

Experimental Characterization and Modeling Multifunctional Properties of Epoxy/Graphene Oxide Nanocomposites

A review of applications of CT imaging on fiber reinforced composites

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