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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Mecklenburg, Matthias
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2019Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy compositecitations
- 20173D carbon networks and their polymer compositescitations
- 2017Ultra-hoch gefüllte und orientierte CNT- und 3D-vernetzte Aerographit Epoxidkomposite: Synthese, Herstellung und Eigenschaften
- 2016Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy compositecitations
- 2016Electro-mechanical piezoresistive properties of three dimensionally interconnected carbon aerogel (Aerographite)-epoxy compositescitations
- 2015Three-dimensional Aerographite-GaN hybrid networkscitations
- 2015Three-dimensional Aerographite-GaN hybrid networks: single step fabrication of porous and mechanically flexible materials for multifunctional applications
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article
Fracture, failure and compression behaviour of a 3D interconnected carbon aerogel (Aerographite) epoxy composite
Abstract
<p>Aerographite (AG) is a mechanically robust, lightweight synthetic cellular material, which consists of a 3D interconnected network of tubular carbon [1]. The presence of open channels in AG aids to infiltrate them with polymer matrices, thereby yielding an electrical conducting and lightweight composite. Aerographite produced with densities in the range of 7-15 mg/cm<sup>3</sup> was infiltrated with a low viscous epoxy resin by means of vacuum infiltration technique. Detailed morphological and structural investigations on synthesized AG and AG/epoxy composite were performed by scanning electron microscopic techniques. The present study investigates the fracture and failure of AG/epoxy composites and its energy absorption capacity under compression. The composites displayed an extended plateau region when uni-axially compressed, which led to an increase in energy absorption of ~133% per unit volume for 1.5 wt% of AG, when compared to pure epoxy. Preliminary results on fracture toughness showed an enhancement of ~19% in K<sub>IC</sub> for AG/epoxy composites with 0.45 wt% of AG. Observations of fractured surfaces under scanning electron microscope gives evidence of pull-out of arms of AG tetrapod, interface and inter-graphite failure as the dominating mechanism for the toughness improvement in these composites. These observations were consistent with the results obtained from photoelasticity experiments on a thin film AG/epoxy model composite.</p>