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5th Anniversary of Nanotechnology and Applied Nanosciences Section—Recent Advances in Carbon Composites and Complex Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4790

Special Issue Editors


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Guest Editor
Department of Innovation Engineering, University of Salento, 73100 Lecce, Italy
Interests: theory of shells, plates, arches, and beams; generalized differential quadrature; FEM; SFEM; WFEM; IGA; advanced composite materials; functionally graded materials; nanomaterials and nanotechnology
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Special Issue Information

Dear Colleagues,

The recent requirements in the design and manufacturing of nanosystems and nanotechnology have encouraged the use of carbon-based nanomaterials, particularly carbon nanotubes (CNTs) and graphene, due to their outstanding mechanical properties, high electrical and thermal conductivity, and reduced flammability.

In such a context, this Special Issue aims at gathering together experts and researchers for the mechanical modeling of micro/nanomaterials at different scales, as useful for biosensors, resonators, valves, pumps, porous structures, energy harvesters, and advanced composite structures. The well-known size dependance of most physical and mechanical properties of small-scale structures has favored the use of nonlocal continuum mechanics to simulate complicated scale phenomena in a consistent manner, both from a theoretical and computational standpoint. Advanced theories and high-performance computational models are welcome for the static and dynamic study of nanosystems and nanostructures, involving enhanced nonlocal damage and fracturing models, able to capture the size-dependent formation and propagation of internal cracks in complex heterogeneous materials and interfaces.

Dr. Francesco Tornabene
Prof. Dr. Rossana Dimitri
Guest Editors

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Keywords

  • advanced computational methods
  • auxetic materials
  • buckling behavior
  • carbon nanotubes
  • complex materials
  • composite beams, plates, and shells
  • constitutive models
  • damage
  • delamination
  • dynamics
  • fracture mechanics
  • functionally graded materials
  • homogenization techniques
  • metamaterials
  • nanostructures
  • nonlocal theories
  • size effects
  • smart materials
  • statics
  • theoretical, numerical, and experimental strategies

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Published Papers (2 papers)

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Research

13 pages, 14611 KiB  
Article
Correlating Disorder Microstructure and Magnetotransport of Carbon Nanowalls
by Mijaela Acosta Gentoiu, Rafael García Gutiérrez, José Joaquín Alvarado Pulido, Javier Montaño Peraza, Marius Volmer, Sorin Vizireanu, Stefan Antohe, Gheorghe Dinescu and Ricardo Alberto Rodriguez-Carvajal
Appl. Sci. 2023, 13(4), 2476; https://doi.org/10.3390/app13042476 - 14 Feb 2023
Cited by 3 | Viewed by 1381
Abstract
The carbon nanowalls (CNWs) grown by Plasma-Enhanced CVD reveal differences in the magnetotransport properties depending on the synthesis parameters. In this paper, we report the influence of the deposition temperature, which produces variations of the disorder microstructure of the CNWs. Relative low disorder [...] Read more.
The carbon nanowalls (CNWs) grown by Plasma-Enhanced CVD reveal differences in the magnetotransport properties depending on the synthesis parameters. In this paper, we report the influence of the deposition temperature, which produces variations of the disorder microstructure of the CNWs. Relative low disorder leads to the weak localization with the transition to weak antilocalization. Higher disorder generates positive Hopping mechanism in low field with a crossover to a diffusion transport by graphene nanocrystallites. The samples reveal a similitude of the isoline density of the MR at a low temperature (<50 K), explained in the context of the magnetization. This effect is independent of the number of defects. We can achieve a desirable amount of control over the MT properties changing the CNWs’ microstructure. Full article
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26 pages, 8516 KiB  
Article
Transient Thermal Stresses in FG Porous Rotating Truncated Cones Reinforced by Graphene Platelets
by Masoud Babaei, Faraz Kiarasi, Kamran Asemi, Rossana Dimitri and Francesco Tornabene
Appl. Sci. 2022, 12(8), 3932; https://doi.org/10.3390/app12083932 - 13 Apr 2022
Cited by 38 | Viewed by 2228
Abstract
The present work studies an axisymmetric rotating truncated cone made of functionally graded (FG) porous materials reinforced by graphene platelets (GPLs) under a thermal loading. The problem is tackled theoretically based on a classical linear thermoelasticity approach. The truncated cone consists of a [...] Read more.
The present work studies an axisymmetric rotating truncated cone made of functionally graded (FG) porous materials reinforced by graphene platelets (GPLs) under a thermal loading. The problem is tackled theoretically based on a classical linear thermoelasticity approach. The truncated cone consists of a layered material with a uniform or non-uniform dispersion of GPLs in a metal matrix with open-cell internal pores, whose effective properties are determined according to the extended rule of mixture and modified Halpin–Tsai model. A graded finite element method (FEM) based on Rayleigh–Ritz energy formulation and Crank–Nicolson algorithm is here applied to solve the problem both in time and space domain. The thermo-mechanical response is checked for different porosity distributions (uniform and functionally graded), together with different types of GPL patterns across the cone thickness. A parametric study is performed to analyze the effect of porosity coefficients, weight fractions of GPL, semi-vertex angles of cone, and circular velocity, on the thermal, kinematic, and stress response of the structural member. Full article
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