Impact resistance of hybrid glass fiber reinforced epoxy/nanoclay composite

Rafiq, Ahmad; Merah, Nesar; Boukhili, Rachid; Al-Qadhi, Muneer

doi:10.1016/j.polymertesting.2016.11.005

Cited by 87 publications

(46 citation statements)

References 28 publications

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“…Similar observation was found by Rafiq et al. 37 for nanoclay composites. The slope of the load–displacement curves increase again, after the first drop, in a linear way with slope/stiffness lower than the first portion up to displacements of 1.9 mm and 2.8 mm for NE and Al 2 O 3 nanocomposites, respectively, Figures 11 and 12(a).…”

Section: Resultssupporting

confidence: 90%

Development and characterization of structural adhesives for aerospace industry with alumina nanoparticles under shear and thermo-mechanical impact loads

Khashaba

Othman

Najjar

2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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The present work aims to improve the mechanical properties of Epocast 50-A1/946 epoxy via incorporation of alumina nanoparticles using an ultrasonic agitation method. The optimum weight percentage of alumina nanoparticles was determined based on the improvement in the shear and impact properties of the nanocomposites at room temperature and 50 ℃. Accordingly, neat epoxy panels and nanocomposite panels with 0.5, 1.0, 1.5, and 2.0 wt% alumina nanoparticles were fabricated. The shear and thermo-mechanical impact properties of the panels were measured using an instrumented drop-weight impact machine and an Iosipescu shear test fixture, respectively, according to ASTMs D5379 and D7136. The maximum improvement in shear strength and modulus was 10.9% and 8.1%, respectively, for the nanocomposites containing 1.0 and 1.5 wt% alumina nanoparticles. The predicted shear moduli of the nanocomposites agreed well with the measured values with a maximum error of 6.52%. The optimal performance of impact properties was achieved by incorporating 1.0 wt% of alumina nanoparticles. Namely, the maximum impact-bending stiffness, contact force, and absorbed energy were increased by 12.9%, 13.0%, and 23.4%, respectively. The test temperature of 50 ℃ was found to have a negative effect on the impact-bending stiffness and the maximum contact force. On the other hand, the absorbed energy was increased up to 12.1%.

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Section: Resultssupporting

confidence: 90%

Development and characterization of structural adhesives for aerospace industry with alumina nanoparticles under shear and thermo-mechanical impact loads

Khashaba

Othman

Najjar

2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…Figure 15 shows the fracture morphologies after interlaminar shear tests for a carbon/epoxy laminate modified with nanoclay, indicating a strong adhesion between the fiber and matrix by adding the nanoclay [78]. High content of nano clay causes agglomeration and leading towards limiting the improvement in impact resistance [78,138]. So there is an optimal content reported for the highest damage resistance and CAI, and the improvement was linked to the transition of failure mechanisms during the CAI test, from the brittle buckling mode to more ductile, multi-layer delamination mode [78].…”

Section: Two-dimensional (2d)mentioning

confidence: 99%

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

2018

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This paper reviews recent works on the application of nanofibers and nanoparticle reinforcements to enhance the interlaminar fracture toughness, to reduce the impact induced damage and to improve the compression after impact performance of fiber reinforced composites with brittle thermosetting resins. The nanofibers have been mainly used as mats embedded between plies of laminated composites, whereas the nanoparticles have been used in 0D, 1D, 2D, and 3D dimensional patterns to reinforce the matrix and consequently the composite. The reinforcement mechanisms are presented, and a comparison is done between the different papers in the literature. This review shows that in order to have an efficient reinforcement effect, careful consideration is required in the manufacturing, materials selection and reinforcement content and percentage. The selection of the right parameters can provide a tough and impact resistant composite with cost effective reinforcements.

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“…In order to improve the delamination resistance of reinforced polymer composites, several approaches were tested. The most common way is the inclusion of some toughening elements or thermoplastic binders; nanoparticles, such as carbon nanotubes (CNTs) [7,8], nanoclays [9], and rubber/thermoplastic materials [10,11] are often incorporated in the matrix. Nanoparticles, as a result of their theoretical high stiffness and strength, might improve the fracture toughness and energy at crack growth initiation of epoxy systems [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Novel Antibacterial and Toughened Carbon-Fibre/Epoxy Composites by the Incorporation of TiO2 Nanoparticles Modified Electrospun Nanofibre Veils

et al. 2019

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The inclusion of electrospun nanofiber veils was revealed as an effective method for enhancing the mechanical properties of fiber-reinforced epoxy resin composites. These veils will eventually allow the incorporation of nanomaterials not only for mechanical reinforcement but also in multifunctional applications. Therefore, this paper investigates the effect of electrospun nanofibrous veils made of polyamide 6 modified with TiO2 nanoparticles on the mechanical properties of a carbon-fiber/epoxy composite. The nanofibers were included in the carbon-fiber/epoxy composite as a single structure. The effect of positioning these veils in different composite positions was investigated. Compared to the reference, the use of unmodified and TiO2 modified veils increased the flexural stress at failure and the fracture toughness of composites. When TiO2 modified veils were incorporated, new antibacterial properties were achieved due to the photocatalytic properties of the veils, widening the application area of these composites.

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Impact resistance of hybrid glass fiber reinforced epoxy/nanoclay composite

Cited by 87 publications

References 28 publications

Development and characterization of structural adhesives for aerospace industry with alumina nanoparticles under shear and thermo-mechanical impact loads

Development and characterization of structural adhesives for aerospace industry with alumina nanoparticles under shear and thermo-mechanical impact loads

Improvement of the Impact Properties of Composite Laminates by Means of Nano-Modification of the Matrix—A Review

Novel Antibacterial and Toughened Carbon-Fibre/Epoxy Composites by the Incorporation of TiO2 Nanoparticles Modified Electrospun Nanofibre Veils

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