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Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials

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

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 3671

Special Issue Editors

Dr. Mikhail V. Golub

E-Mail Website
Guest Editor
Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350040 Krasnodar, Russia
Interests: applied mathematics; numerical analysis; computational mechanics; wave propagation; mechanics of solids; machine learning methods; non-destructive evaluation; structural health monitoring; acoustic metamaterials
Special Issues, Collections and Topics in MDPI journals
Dr. Artem A. Eremin

E-Mail Website
Guest Editor
Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350040 Krasnodar, Russia
Interests: applied mathematics; numerical analysis and computational mechanics; wave dynamics; BEM technique; computer modelling (FORTRAN, MATLAB); simulation of ultrasonic wave phenomena; experimental techniques for elastic guided waves; wave-based non-destructive testing and structural health monitoring
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is our pleasure to invite you to submit a manuscript to the forthcoming Special Issue “Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials” in Materials.

At present, composite materials and smart structures exhibiting enhanced properties are used extensively in numerous engineering applications, such as aerospace, marine structures, civil construction, etc. As a prime step in understanding and analysis of the dynamics of smart composite materials, efficient and accurate mathematical models and numerical simulation tools, which are suitable for fast parametric studies at the development stage or for the implementation in real devices and systems, are required. Such simulation problems are often very complex and cannot be treated efficiently with simple analytical or conventional numerical tools, inspiring, therefore, the development of advanced computational methods dynamic problems. On the other hand, experimental studies focused on the understanding of the dynamics of composites with inhomogeneites are very important for the development of new materials, design, and control of composite structures.

It is our pleasure to invite you to submit a manuscript for this Special Issue related to experimental and numerical studies of dynamic behavior of composite materials. We also especially welcome investigations related to acoustic/elastic metamaterials and the wave phenomena in inhomogeneous waveguides for the purposes of non-destructive testing and structural health monitoring.

Full papers, short communications, and reviews are all welcome.

Dr. Mikhail V. Golub
Dr. Artem A. Eremin
Guest Editors

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

  • composites
  • simulation
  • numerical analysis
  • wave propagation
  • computational mechanics
  • elastic/acoustic metamaterials and phononic crystals
  • experimental studies
  • structural health monitoring
  • nondestructive evaluation

Published Papers (4 papers)

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Research

14 pages, 9380 KiB  
Article
Structural Design and Analysis of Large-Diameter D30 Conical Polycrystal Diamond Compact (PDC) Teeth under Engineering Rotary Mining Conditions
by Zhiling Xiao, Yuhao Zhang, Songhao Hu, Fan Zhang, Junjie Jiang, Hao Wang and Jiantao Li
Materials 2024, 17(2), 477; https://doi.org/10.3390/ma17020477 - 19 Jan 2024
Viewed by 625
Abstract
In the realm of engineering rotary excavation, the rigid and brittle nature of the Polycrystal Diamond Compact (PDC) layer poses challenges to the impact resistance of conical teeth. This hinders their widespread adoption and utilization. In this paper, the Abaqus simulation is used. [...] Read more.
In the realm of engineering rotary excavation, the rigid and brittle nature of the Polycrystal Diamond Compact (PDC) layer poses challenges to the impact resistance of conical teeth. This hinders their widespread adoption and utilization. In this paper, the Abaqus simulation is used. By optimizing the parameters of the radius of the cone top arc, we analyzed the changing law of the parameters of large-diameter D30 series conical PDC teeth, such as the equivalent force, impact force, and energy absorption of the conical teeth during the impact process, and optimized the best structure of the conical PDC teeth. After being subjected to a high temperature and high pressure, we synthesized the specimen for impact testing and analyzed the PDC layer crack extension and fracture failure. The findings reveal the emergence of a stress ring below the compacted area of the conical tooth. As the radius of the cone top arc increases, so does the area of the stress ring. When R ≥ 10 mm, the maximum stress change is minimal, and at R = 10 mm, the stress change in its top unit is relatively smooth. Optimal impact resistance is achieved, withstanding a total impact work value of 7500 J. Extrusion cracks appear in the combined layer part of PDC layers I and II, but the crack source is easy to produce in the combined layer of PDC layer II and the alloy matrix and extends to both sides, and the right side extends to the surface of the conical tooth in a “dragon-claw”. The failure morphology of the conical teeth includes ring shedding at the top of the PDC layer, the lateral spalling of the PDC layer, and the overall cracking of the conical teeth. Through this study, we aim to promote the popularization and application of large-diameter conical PDC teeth in the field of engineering rotary excavation. Full article
(This article belongs to the Special Issue Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials)
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20 pages, 7527 KiB  
Article
The Influence of Nitrogen Flow on the Stoichiometric Composition, Structure, Mechanical, and Microtribological Properties of TiN Coatings
by Vasilina Lapitskaya, Andrey Nikolaev, Anastasiya Khabarava, Evgeniy Sadyrin, Pavel Antipov, Kamaludin Abdulvakhidov, Sergei Aizikovich and Sergei Chizhik
Materials 2024, 17(1), 120; https://doi.org/10.3390/ma17010120 - 26 Dec 2023
Cited by 1 | Viewed by 600
Abstract
Utilizing reactive DC magnetron sputtering method, TiN coatings were deposited on the silicon substrates at different nitrogen flows and powers. A study of the X-ray phase composition of the coatings was carried out. The stoichiometric composition of the coatings was determined using energy [...] Read more.
Utilizing reactive DC magnetron sputtering method, TiN coatings were deposited on the silicon substrates at different nitrogen flows and powers. A study of the X-ray phase composition of the coatings was carried out. The stoichiometric composition of the coatings was determined using energy dispersive x-ray spectroscopy. The structure of the surface, cross-section, and thickness of the coatings were determined using scanning electron (SEM) and atomic force microscopy (AFM). A significant change in the surface structure of TiN coatings was established with changes in deposition power and nitrogen flow. SEM images of cross-sections of all coated samples showed that the formation of coatings occurs in the form of a columnar structure with a perpendicular orientation relative to the silicon substrate. The mechanical properties (elastic modulus E and microhardness H) of TiN coatings of the first group demonstrate a maximum at a nitrogen flow of 3 sccm and are 184 ± 11 GPa and 15.7 ± 1.3 GPa, respectively. In the second group, the values of E and H increase due to a decrease in the size of the structural elements of the coating (grains and crystallites). In the third group, E and H decrease. Microtribological tests were carried out in 4 stages: at a constant load, multi-cycle for 10 and 100 cycles, and with increasing load. The coefficient of friction (CoF) and specific volumetric wear ω depend on the roughness, topology, and mechanical properties of the resulting coatings. Fracture toughness was determined using nanoscratch and depends on the mechanical properties of TiN coatings. Within each group, coatings with the best mechanical and microtribological properties were described: in the first group—TiN coating at 3 sccm (with (29.6 ± 0.1) at.% N), in the second group—TiN coating at 2 sccm (with (40.8 ± 0.2) at.% N), and in the third group—TiN coating at 1 sccm (c (37.3 ± 0.2) at.% N). Full article
(This article belongs to the Special Issue Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials)
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21 pages, 5757 KiB  
Article
Study of Ultrasonic Guided Wave Propagation in Bone Composite Structures for Revealing Osteoporosis Diagnostic Indicators
by Evgeny V. Glushkov, Natalia V. Glushkova, Olga A. Ermolenko and Alexey M. Tatarinov
Materials 2023, 16(18), 6179; https://doi.org/10.3390/ma16186179 - 12 Sep 2023
Cited by 1 | Viewed by 844
Abstract
Tubular bones are layered waveguide structures composed of soft tissue, cortical and porous bone tissue, and bone marrow. Ultrasound diagnostics of such biocomposites are based on the guided wave excitation and registration by piezoelectric transducers applied to the waveguide surface. Meanwhile, the upper [...] Read more.
Tubular bones are layered waveguide structures composed of soft tissue, cortical and porous bone tissue, and bone marrow. Ultrasound diagnostics of such biocomposites are based on the guided wave excitation and registration by piezoelectric transducers applied to the waveguide surface. Meanwhile, the upper sublayers shield the diseased interior, creating difficulties in extracting information about its weakening from the surface signals. To overcome these difficulties, we exploit the advantages of the Green’s matrix-based approach and adopt the methods and algorithms developed for the guided wave structural health monitoring of industrial composites. Based on the computer models implementing this approach and experimental measurements performed on bone phantoms, we analyze the feasibility of using different wave characteristics to detect hidden diagnostic signs of developing osteoporosis. It is shown that, despite the poor excitability of the most useful modes associated with the diseased inner layers, the use of the improved matrix pencil method combined with objective functions based on the Green’s matrix allows for effective monitoring of changes in the elastic moduli of the deeper sublayers. We also note the sensitivity and monotonic dependence of the resonance response frequencies on the degradation of elastic properties, making them a promising indicator for osteoporosis diagnostics. Full article
(This article belongs to the Special Issue Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials)
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21 pages, 3887 KiB  
Article
Effective Boundary Conditions and Stochastic Crack Distribution for Modelling Guided Waves Scattering by a Partially Closed Interfacial Delamination in a Laminate
by Mikhail V. Golub, Olga V. Doroshenko and Yan Gu
Materials 2023, 16(6), 2415; https://doi.org/10.3390/ma16062415 - 17 Mar 2023
Cited by 1 | Viewed by 1073
Abstract
Cohesive and adhesive bindings degrade during operation and maintenance even if contacting materials in a manufactured laminated structure are perfectly matched at the interfaces. Two modelling approaches for describing partially closed delaminations or imperfect contact zones, which often occurs at the interfaces, are [...] Read more.
Cohesive and adhesive bindings degrade during operation and maintenance even if contacting materials in a manufactured laminated structure are perfectly matched at the interfaces. Two modelling approaches for describing partially closed delaminations or imperfect contact zones, which often occurs at the interfaces, are examined and considered. To confirm the adequateness of the applicability of the effective spring boundary conditions for guided wave scattering by a finite length delamination, guided wave propagation through a damaged zone with a distribution of micro-cracks is compared with an equivalent cohesive zone model, where the spring stiffnesses for the effective boundary conditions are calculated using the properties of the considered crack distribution. Two kinds of local interfacial decohesion zones with an imperfect contact at the interfaces are considered: uniform partially closed delaminations and bridged cracks. The possibility of the employment of the effective spring boundary conditions to substitute a distribution of micro-cracks is analysed and discussed. Two algorithms of generation of a distribution of open micro-cracks providing characteristics equivalent to the effective boundary conditions are presented and examined. The influence of the characteristics of a delamination on wave characteristics (eigenfrequencies, eigenforms, transmission coefficient) is investigated for several kinds of partially closed delaminations. Full article
(This article belongs to the Special Issue Numerical Simulation and Experimental Studies of Dynamic Behaviour of Composite Materials)
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