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Elastic Behaviour of Composites
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Elastic Behaviour of Composites

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 6992

Special Issue Editor

Dr. M.S.H. Al-Furjan

E-Mail
Guest Editor
Assoc. Prof. in State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Interests: dynamics and statics analysis; smart materials and structures; solid mechanics; elasto-dynamics analysis; aerodynamics analysis

Special Issue Information

Dear Colleagues,

Composite material technologies are widely used in advanced structures and replacing traditional materials at a growing pace. Composite materials have enhanced mechanical properties compared to traditional materials and have potential applications in the manufacturing of aerospace components, aircraft, boat hulls, car bodies, electronic devices, biomedical prostheses, etc.

This Special Issue of Materials focuses on recent research advances in the elastic behavior of composites and is dedicated to the publication of original full-length research papers and review articles of the highest quality, which address the advances in the research and development of composite materials technologies. These novel computational studies should focus on new findings related to the recent advances in numerical modeling; the mechanical and elastic analysis of composites, fiber-reinforced composites, ceramic composites, nanocomposites, and biomedical composites; and more novel areas, such as intelligent composite materials, the recyclability of composites, etc.

Therefore, the topics covered in the Special Issue include, but are not limited to, acoustic and wave propagation; thermo-mechanical, size-dependent analyses; nonlinear micro-and nano-systems; vibrations, dynamics, and stability analyses; and elastostatic and elastodynamic analyses of continua with nano-structural features. Along with the regular contributions, high-quality comprehensive review papers in the subject area of this Special Issue are also welcome for submission.

Dr. M.S.H. Al-Furjan
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • elastic and mechanical analysis
  • composite structures
  • beam/plate/shell
  • nanocomposites
  • biomedical composites
  • fiber-reinforced composites
  • numerical solution
  • nano-mechanics
  • novel composites
  • elastodynamic analysis of composites

Published Papers (4 papers)

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Research

17 pages, 4356 KiB  
Article
Research on Cartilage 3D Printing Technology Based on SA-GA-HA
by Yong Chen, Youping Gong, Lijun Shan, Chou Yong Tan, MS Al-Furjan, S. Ramesh, Huipeng Chen, Xiangjuan Bian, Yanda Chen, Yunfeng Liu and Rougang Zhou
Materials 2023, 16(15), 5312; https://doi.org/10.3390/ma16155312 - 28 Jul 2023
Cited by 3 | Viewed by 1067
Abstract
Cartilage damage is difficult to heal and poses a serious problem to human health as it can lead to osteoarthritis. In this work, we explore the application of biological 3D printing to manufacture new cartilage scaffolds to promote cartilage regeneration. The hydrogel made [...] Read more.
Cartilage damage is difficult to heal and poses a serious problem to human health as it can lead to osteoarthritis. In this work, we explore the application of biological 3D printing to manufacture new cartilage scaffolds to promote cartilage regeneration. The hydrogel made by mixing sodium alginate (SA) and gelatin (GA) has high biocompatibility, but its mechanical properties are poor. The addition of hydroxyapatite (HA) can enhance its mechanical properties. In this paper, the preparation scheme of the SA-GA-HA composite hydrogel cartilage scaffold was explored, the scaffolds prepared with different concentrations were compared, and better formulations were obtained for printing and testing. Mathematical modeling of the printing process of the bracket, simulation analysis of the printing process based on the mathematical model, and adjustment of actual printing parameters based on the results of the simulation were performed. The cartilage scaffold, which was printed using Bioplotter 3D printer, exhibited useful mechanical properties suitable for practical needs. In addition, ATDC-5 cells were seeded on the cartilage scaffolds and the cell survival rate was found to be higher after one week. The findings demonstrated that the fabricated chondrocyte scaffolds had better mechanical properties and biocompatibility, providing a new scaffold strategy for cartilage tissue regeneration. Full article
(This article belongs to the Special Issue Elastic Behaviour of Composites)
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22 pages, 7127 KiB  
Article
Study of Practical Analysis Method for Shear Warping Deformationof Composite Box Girder with Corrugated Steel Webs
by Maoding Zhou, Yuanhai Zhang, Pengzhen Lin, Wei Ji and Hongmeng Huang
Materials 2023, 16(5), 1845; https://doi.org/10.3390/ma16051845 - 23 Feb 2023
Viewed by 1336
Abstract
Shear warping deformation is an important part of the flexural and constrained torsion analysis of composite box girder with corrugated steel webs (CBG-CSWs), which is also the main reason for the complex force analysis of box girders. A new practical theory for analyzing [...] Read more.
Shear warping deformation is an important part of the flexural and constrained torsion analysis of composite box girder with corrugated steel webs (CBG-CSWs), which is also the main reason for the complex force analysis of box girders. A new practical theory for analyzing shear warping deformations of CBG-CSWs is presented. By introducing shear warping deflection and corresponding internal forces, the flexural deformation of CBG-CSWs is decoupled to the Euler-Bernoulli beam (EBB) flexural deformation and the shear warping deflection. On this basis, a simplified method for solving shear warping deformation using the EBB theory is proposed. According to the similarity of the governing differential equations of constrained torsion and shear warping deflection, a convenient analysis method for the constrained torsion of CBG-CSWs is derived. Based on the decoupled deformation states, a beam segment element analytical model applicable to EBB flexural deformation, shear warping deflection, and constrained torsion deformation is proposed. A variable section beam segment analysis program considering the variation of section parameters is developed for CBG-CSWs. Numerical examples of constant and variable section continuous CBG-CSWs show that the stress and deformation results obtained by the proposed method are in good agreement with the 3D finite element results, verifying the effectiveness by the proposed method. Additionally, the shear warping deformation has a great influence on the cross-sections near the concentrated load and middle supports. This impact along the beam axis decays exponentially, and the decay rate is related to the shear warping coefficient of the cross-section. Full article
(This article belongs to the Special Issue Elastic Behaviour of Composites)
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22 pages, 3829 KiB  
Article
3D Printing and Performance Study of Porous Artificial Bone Based on HA-ZrO2-PVA Composites
by Hongling Bie, Honghao Chen, Lijun Shan, C. Y. Tan, M. S. H. Al-Furjan, S. Ramesh, Youping Gong, Y. F. Liu, R. G. Zhou, Weibo Yang and Honghua Wang
Materials 2023, 16(3), 1107; https://doi.org/10.3390/ma16031107 - 27 Jan 2023
Cited by 4 | Viewed by 1906
Abstract
An ideal artificial bone implant should have similar mechanical properties and biocompatibility to natural bone, as well as an internal structure that facilitates stomatal penetration. In this work, 3D printing was used to fabricate and investigate artificial bone composites based on HA-ZrO2 [...] Read more.
An ideal artificial bone implant should have similar mechanical properties and biocompatibility to natural bone, as well as an internal structure that facilitates stomatal penetration. In this work, 3D printing was used to fabricate and investigate artificial bone composites based on HA-ZrO2-PVA. The composites were proportionally configured using zirconia (ZrO2), hydroxyapatite (HA) and polyvinyl alcohol (PVA), where the ZrO2 played a toughening role and PVA solution served as a binder. In order to obtain the optimal 3D printing process parameters for the composites, a theoretical model of the extrusion process of the composites was first established, followed by the optimization of various parameters including the spray head internal diameter, extrusion pressure, extrusion speed, and extrusion line width. The results showed that, at the optimum parameters of a spray head diameter of 0.2 mm, extrusion pressure values ranging from 1–3 bar, a line spacing of 0.8–1.5 mm, and a spray head displacement range of 8–10 mm/s, a better structure of biological bone scaffolds could be obtained. The mechanical tests performed on the scaffolds showed that the elastic modulus of the artificial bone scaffolds reached about 174 MPa, which fulfilled the biomechanical requirements of human bone. According to scanning electron microscope observation of the scaffold sample, the porosity of the scaffold sample was close to 65%, which can well promote the growth of chondrocytes and angiogenesis. In addition, c5.18 chondrocytes were used to verify the biocompatibility of the composite materials, and the cell proliferation was increased by 100% when compared with that of the control group. The results showed that the composite has good biocompatibility. Full article
(This article belongs to the Special Issue Elastic Behaviour of Composites)
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16 pages, 5675 KiB  
Article
Creep Behavior of A356 Aluminum Alloy Reinforced with Multi-Walled Carbon Nanotubes by Stir Casting
by L. Shan, C. Y. Tan, X. Shen, S. Ramesh, R. Kolahchi, M. H. Hajmohammad and D. K. Rajak
Materials 2022, 15(24), 8959; https://doi.org/10.3390/ma15248959 - 15 Dec 2022
Cited by 3 | Viewed by 1959
Abstract
Lightweight aluminum alloy components are often used to manufacture a variety of engineering components in many industries. In recent years, researchers have studied the effect of improving the mechanical properties of metal alloys by incorporating nano-carbon into its structure. In this study, the [...] Read more.
Lightweight aluminum alloy components are often used to manufacture a variety of engineering components in many industries. In recent years, researchers have studied the effect of improving the mechanical properties of metal alloys by incorporating nano-carbon into its structure. In this study, the effect of the addition of 0.2, 0.5, and 1 wt% of multi-walled carbon nanotubes (MWCNTs) on the stress–strain behavior and creep phenomenon of an A356 aluminum alloy were studied. The effect of nickel coating on 0.2 wt% MWCNTs was also investigated. Samples were prepared using the stir-casting method. The results revealed that the grain size became finer when MWCNT nano-particulates were introduced. Although the MWCNTs were distributed homogeneously in the A356 matrix, as confirmed by FESEM analysis, there were some agglomerations observed in a specific area with dimensions smaller than 100 nm. Nevertheless, the addition of MWCNTs was found to be beneficial in enhancing the hardness of alloys containing 0.2 wt%, 0.2 wt% nickel-coated, 0.5 wt%, and 1 wt% MWCNTs by 9%, 24%, 32%, and 15%, respectively, as compared with the unreinforced A345 matrix. It was also found that the 0.5 wt% MWCNT-A356 matrix exhibited an improvement in the creep lifetime by more than two orders of magnitude. Full article
(This article belongs to the Special Issue Elastic Behaviour of Composites)
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