Prediction of elastic modulus of epoxy/single wall carbon nanotube composites by considering interfacial debonding

Document Type : Research Article

Authors

1 MSc Student of Mechanical Engineering, Department of Mechanical Engineering,Amirkabir University of Technology,Tehran, Iran

2 Department of Mechanical Engineering,New Technologies Research Center, Advanced Material Research Group, , Amirkabir University of Technology,Tehran, Iran

3 Assistant Professor, Department of Mechanical Engineering,New Technologies Research Center, Advanced Material Research Group, , Amirkabir University of Technology,Tehran, Iran.

4 Professor, Department of Mechanical Engineering,New Advanced, Amirkabir University of Technology,Tehran, Iran

AMNC.2017.5.19.5

Abstract

In this research, numerical and experimental investigations of the elastic properties of epoxy reinforced with carbon nanotubes (CNTs) are presented. First, finite element modeling of elastic modulus is simulated without considering interfacial debonding between the matrix and CNT.It was observed that the results of the model differ greatly with experimental results whichthe reason is that it assumes full connectivity matrix and the CNTs. In the next step with regard to the separation, the simulation was conducted. By calculation of critical stress and defining the cohesive surface elements in Abaqus, elastic modulus was calculated.Finally,by assuming curvature for CNTs, the simulation results are presented. The comparative results of this study indicate that the presented numerical method exibits a good agreement with experimental data when interfacial debonding is considered.

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References

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