Nano-Modified Sandwich Composites Under Dynamic Loading Conditions

Ávila, Antônio F.; Andrade, Moises; Cruz, Diego Thadeu Lopes da; Sousa, Douglas da Cruz; Dias, Eder C.

doi:10.2514/6.2009-2540

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…In this case, when the saturation is reached, it promotes agglomerations that are potential crack nucleation points. Involving similar sandwich composite plates, these authors developed another study in which two sets of impact tests were performed: low velocity and high mass test and high velocity and low mass test [3]. The energies applied ranged from 5 J to 75 J.…”

Section: Sandwich Composites Incorporating Nanoclays Into the Skinmentioning

confidence: 99%

“…In terms of skins, for example, they are composed mainly of fiber-reinforced polymers (matrices like epoxy, PEEK, polyamide and fibers like glass, carbon or aramid fibers), metals alloys (such as aluminum, steel and titanium) and natural materials (such as wood, pine and other types of cellulose based materials). On the other hand, the core is essentially composed of non-rigid and low-density elastic materials, such as foam core, honeycomb structures or balsa wood [1][2][3][4][5][6][7][8]. Building composite structures with these two types of materials make it possible to design structural components with good outer-layer mechanical properties, and simultaneously, good impact and vibration tolerances within the core layer, making them good options for aerospace, marine and wind power industries [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties of Sandwich Composites Reinforced by Nanoclays: An Overview

et al. 2020

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Structural sandwich composites have been widely used in many engineering applications, and this trend continues due to their superior mechanical properties, thermal insulation and acoustic damping. However, to further improve their mechanical properties, literature reports significant benefits obtained with nano-reinforcements. In this context, nanoclays are the most popular nano-reinforcements for polymeric nanocomposites, due to their relatively high ion exchange capacity, high aspect ratio and economic advantages. In order to stablish a systematic understanding for design criteria, this work intends to summarize all studies present in the open literature about this topic. It was possible to conclude that using nanoclays improves the mechanical properties of structural sandwich composites, especially in terms of impact strength. Nevertheless, the benefits obtained regarding fatigue performance are not adequately reported in the literature, revealing the need to develop these studies.

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Section: Sandwich Composites Incorporating Nanoclays Into the Skinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Sandwich Composites Reinforced by Nanoclays: An Overview

et al. 2020

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“…They revealed that 4 wt.% of nanoclay provided the composite sandwich materials with the highest flexural and impact properties. Ávila et al 12 also obtained positive results where the addition of nanoclay up to 5 wt.% in the glass fibre/epoxy facesheet could offer the highest impact properties to the glass fibre/polystyrene composite sandwich materials.…”

Section: Introductionmentioning

confidence: 97%

The effect of nanoclay on the performance of basalt-epoxy facesheet and foam core sandwich panels

Joseph

Muthukumar

et al. 2023

Jnl of Sandwich Structures & Materials

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It has been reported that the properties of a foam-based sandwich panel can be enhanced by incorporating nanoclay into the facesheet or foam core. In this study, an attempt was made to disperse nanoclay into the epoxy adhesive so as to bond the facesheet with the core. The sandwich panel in this study was fabricated using a basalt/epoxy laminate as the facesheet and polyvinyl chloride foam as the core material. The characterisation results through flexural and quasi-static indentation tests revealed that the infusion of nanoclay led to an increase of up to 34% in the bending strength, 51% in the core shear strength, and 72% in energy absorption. In addition, the nanoclay-reinforced sandwich panel showed a slightly higher sound absorption coefficient than the control specimen without nanoclay. Another interesting observation from the flexural and quasi-static indentation tests was that the addition of nanoclay also influenced the failure behaviour and the size of the damaged area. The superior energy and sound absorption characteristics make the foam-based sandwich panel a potential material for structural applications requiring acoustic insulation.

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