https://www.elibrary.ru/title_about_new.asp?i
1605-8119
Materials physics and mechanics
51
1
2023
1-178
UNK
RUS
1-9
Stepanov
Ioffe Institute
St.Petersburg, Russia
Pechnikov
Ioffe Institute
St.Petersburg, Russia
0000-0003-4205-3226
Guzilova
Ioffe Institute
St.Petersburg, Russia
Scheglov
Ioffe Institute
Saint Petersburg, Russia
Chikiryaka
Ioffe Institute
St.Petersburg, Russia
Nikolaev
Ioffe Institute
St.Petersburg, Russia
Polyakov
National University of Science and Technology MISiS
Moscow, Russia
Epitaxial stabilization of α-Ga2O3 layers grown on r-plane sapphire
In this work, we study the thermal stabilization of metastable α-Ga2O3 in growth experiments. Gallium oxide films are grown on c- and r-plane sapphire substrates by halide vapor phase epitaxy (HVPE) at the temperature range of 450-690 oC. The surface morphology is investigated by scanning electron microscopy. The structural quality and phase composition of the grown films is studied by X-ray diffraction. It is found that the use of r-plane sapphire substrates prevents the formation of the orthorhombic κ-Ga2O3 and monoclinic β-Ga2O3 and thus extends the growth process window for the deposition of the rhombohedral α-phase of gallium oxide.
10.18149/MPM.5112023_1
gallium oxide
HVPE
epitaxial layers
c-plane and r-plane sapphire substrates
https://mpm.spbstu.ru/article/2023.93.1/
1-Nikolaev-et-al.pdf
RAR
RUS
10-18
Syzrantsev
Grozny State Oil Technical University
Grozny, Russia
Deformations properties of glassy epoxy doped with SiO2 and Al2O3 nanoparticles of different synthesis methods
The variation in the deformation properties of epoxy polymers doped with of SiO2 and Al2O3 nanoparticles obtained by four different methods was experimentally investigated. It was shown that the doping of nanoparticles leads to structural changes in the polymer similar to the effect of plasticization (an increase in the mobility of the polymer chain). The variation of the types of nanoparticles contained in the composite significantly changes the process of the kinetics of microindentation stress relaxation. In particular, the complete recovery from microindentation (healing of the indentation) occurs at different concentrations by varying the method of nanoparticle synthesis.
10.18149/MPM.5112023_2
Microindentation
thermally stimulated relaxation
delocalization
epoxy polymer
nanoparticles
https://mpm.spbstu.ru/article/2023.93.2/
2-V_-Syzrantsev.pdf
RAR
RUS
19-32
Sk. Faruque Ahmed
Aliah University
Kolkata, India
Mohibul Khan
Aliah University
Kolkata, India
Md Shahbaz Alam
Aliah University
Kolkata, India
Effect of nickel incorporation on structural and optical properties of zinc oxide thin films deposited by RF/DC sputtering technique
Reactive co-sputtering technique has been used to fabricate pure zinc oxide and nickel doped zinc oxide thin films on glass substrate at room temperature 30º C. The actual target of this experimental work was to investigate the effect of nickel incorporation on structural and optical properties of nickel doped zinc oxide thin films. The deposited samples were characterized by using Energy-Dispersive Analysis X-ray, X-Ray Diffractometer, Atomic Force Microscope, Fourier Transform Infrared Spectroscopy and Ultraviolet-visible spectrophotometer to investigate the doping growth, structural crystallinity, surface morphology, chemical bonding information and optical properties. Scanning electron microscope has been used to measure the thickness of all deposited films. The X-Ray Diffractometer study of all deposited films reveals that the highly intensive peak has been found near glancing angle at 34.48º corresponds to miller indices (002), which confirmed the wurtzite hexagonal crystallite structure of zinc oxide that matched with JCPDS card no 36-1451. Crystallite size of deposited thin films is increased from 8 nm to 15 nm with the increasing of atomic % of nickel from 0 to 7.5 respectively in zinc oxide. The Fourier Transform Infrared Spectroscopy peak found at 432 cm-1 confirmed the deposited films are zinc oxide thin films. Optical band gap energy decreases from 3.15 eV to 2.21 eV where as the Urbach energy increases from 118meV to 243meVwith increasing of atomic % of nickel from 0 to 7.5 respectively.
10.18149/MPM.5112023_3
Ni-ZnO thin films; RF/DC sputtering technique; XRD; AFM; Optical Property; Urbach energy
https://mpm.spbstu.ru/article/2023.93.3/
3-Mohibul-Khan%2C-Md-Shahbaz-Alam%2C-Sk_-Faruque-Ahmed.pdf
RAR
RUS
33-41
Vatin
Peter the Great St. Petersburg Polytechnic University
St.Petersburg, Russia
0000-0001-8407-8144
Erofeev
Ogarev Mordovia State University
Saransk, The Republic of Mordovia, Russia
Korotaev S.A.
National Research Mordovia State University
Saransk, The Republic of Mordovia, Russia
Deformation and Heat-Insulating Characteristics of Light Concrete on Porous Burned Binder Under Heating
It is known to use heat-insulating materials with a rigid cellular structure on cement, gypsum, liquid glass binders as a constructive fire protection. The described technologies for the manufacture of such materials do not allow combining a binder with an aggregate. The use of frame technology made it possible to obtain a material with an aggregate on a porous burned soda-lime-silicate waterproof binder. The article presents the results of studies of the fire-proof properties of samples from the obtained material. The deformation and heat-insulating characteristics of the material when heated are used as criteria for fire-proof properties. Volumetric heating of the material to a maximum temperature of 892 °C was carried out when studying the deformation characteristics. The heat-insulating characteristics of the material were studied during one-sided heating of a material sample in the form of a tile to a maximum temperature of 1050 °C. The characteristics obtained indicate that the material can be used for fire-proof lining of building structures and as for the construction of screen walls and as a filling material in fire barriers.
10.18149/MPM.5112023_4
coarse aggregate
liquid glass
soda-lime-silicate glass
burned binder
fire-proof characteristics of the material
https://mpm.spbstu.ru/article/2023.93.4/
4-V_T_-Erofeev%2C-S_A_-Korotaev%2C-N_I_-Vatin.pdf
RAR
RUS
42-60
Jagdish Singh
Maharshi Dayanand University
Haryana, India
Baljeet Singh
Post Graduate Government College
Chandigarh, India
Asha Sangwan
Government College
Haryana, India
Wave propagation in a nonlocal rotating micropolar piezoelectric solid
The nonlocal theory of elasticity is applied to formulate the governing equations of nonlocal micropolar piezoelectric material in a rotating frame. The governing equations are specialized for a plane and solved to show the existence of three coupled plane waves. Reflection of a coupled longitudinal displacement wave is considered at a stress-free surface of half-space containing the micropolar piezoelectric material. For the incidence of coupled longitudinal displacement waves, the expressions of reflection coefficients and energy ratios for reflected waves are derived. A quantitative example is set up to illustrate the effects of rotation and nonlocal parameters on the reflection coefficients and energy ratios in a given range of the angle of incidence.
10.18149/MPM.5112023_5
plane waves
nonlocality
rotation
reflection coefficients
energy ratios
https://mpm.spbstu.ru/article/2023.93.5/
5-Baljeet-Singh%2C-Asha-Sangwan%2C-Jagdish-Singh.pdf
RAR
RUS
61-67
Volkov
St. Petersburg State University
St. Petersburg, Russia
Belyaev
Institute for Problems of Mechanical Engineering RAS
St. Petersburg, Russia
Evard
St. Petersburg State University
St. Petersburg, Russia
Simulation of the plastic deformation of shape memory alloys considering shear anisotropy on the slip plane
The plastic deformation of a TiNi single crystal was modeled, taking into account the anisotropy of the yield stress in the slip plane. The material parameters (initial yield stress and hardening factor) were selected for each slip system. Deformation curves were obtained for different orientations of the single crystal. It is shown that Schmid's law prevents obtaining a correct description of deformation for all orientations of single crystals. Good agreement with experiments was observed for the crystal orientations 〈001〉, 〈111〉, and 〈123〉 but not 〈011〉, for which the deformation mechanism was different. In the case of the deformation of a polycrystalline sample, the anisotropy in the slip plane is not significant.
10.18149/MPM.5112023_6
shape memory alloys
microstructural modeling
plastic deformation
TiNi
single crystal
polycrystal
https://mpm.spbstu.ru/article/2023.93.6/
6-F_S_-Belyaev%2C-M_E_-Evard%2C-A_E_-Volkov.pdf
RAR
RUS
68-83
Kovtanyuk
Institute of Automation and Control Processes Far Eastern Branch of the Russian Academy of Sciences
Vladivostok, Russia
Burenin
Institute of Machinery and Metallurgy of the Far-Eastern Branch Russian Academy of Sciences
Komsomolsk-on-Amur, Russian Federation
Gerasimenko E.A.
Institute of Automation and Control Processes Far Eastern Branch of the Russian Academy of Sciences
Vladivostok, Russia
On the unloading dynamics in an elastic/viscoplastic material predeformed by viscometric twisting
Solving the problem of large elastic-plastic deformation theory, the present paper addresses, involved two stages. We first derive the exact solution to the problem of slow strain growth in a cylindrical layer consisting of an incompressible elastic/viscoplastic material and experiencing viscometric motion subject to no-slip contact between the material and the rigid instrument's walls. Then a striking stick-slip transition at one of the material-instrument interfaces poses the problem of unloading dynamics. Stress jump at the boundary surface causes a shear cylindrical unloading shock wave, which advances into the material and interacts with the elastic-plastic boundary separating viscoplastic flow from reversible deformation region. To solve this dynamic problem the ray method for constructing approximate solutions is adjusted to the case of elastic/viscoplastic material.
10.18149/MPM.5112023_7
large strains
elasticity
viscoplasticity
viscometric strains
unloading wave
ray method
https://mpm.spbstu.ru/article/2023.93.7/
7-A_A_-Burenin%2C-E_A_-Gerasimenko%2C-L_V_-Kovtanyuk.pdf
RAR
RUS
84-92
Dubinov
Gubkin Russian State University of Oil and Gas (National Research University)
Moscow, Russia
Dedok
Gubkin Russian State University of Oil and Gas (National Research University)
Moscow, Russia
Elagina
National University of Oil and Gas «Gubkin University»
Moscow, Russia
Buklakov
Gubkin Russian State University of Oil and Gas (National Research University)
Moscow, Russia
Gas-abrasive wear of shut-off valves and process piping of compressor and gas distribution stations
A high content of mechanical impurities in the gas flow causes intense gas-abrasive wear of the pipe surface, especially at the pipe bends and shut-off valves. To assess the effect of gas flow rate on the failure rate of piping elements, an installation, and a test procedure were designed. The test result was evaluated by the value of the intensity of linear wear of the material, related to the amount of abrasive that was projected on the sample for the entire time of testing. Based on the results obtained, materials were identified that have minimal wear when the gas flow is shut off and when the abrasive carrying gas flow rate changes from 24 m/s to 48 m/s. Steel 20 showed better wear resistance compared to steel 09G2S, but an increase in the flow rate leads to an increase in wear intensity.
10.18149/MPM.5112023_8
gas-abrasive wear
gas distribution station
shut-off valves
sealing materials of shutoff valves
gas medium flow rate
https://mpm.spbstu.ru/article/2023.93.8/
8-O_Yu_-Elagina%2C-A_G_-Buklakov-et-al_F.pdf
RAR
RUS
93-107
Awad
Alexandria University
Alexandria, Egypt
Fayik
Alexandria University
Alexandria, Egypt
El-Dhaba
Damanhur University
Egypt
Diffusion-induced stresses due to an impulsive mass source under non-Fickian mass transfer models
The description of the mass transfer mechanisms in various physical and engineering fields, e.g., Li-ion batteries, is of significant importance for optimizing their performance. The present work introduces a comparative study describing the different responses of a perfectly elastic material when different non-Fickian diffusion situations are considered. The uncoupled theory of elastic diffusion, in which the diffusion process is described by non-Fickian laws, such as Cattaneo, Jeffreys-type, and Burgers-type constitutive laws, is employed in this modeling. The diffusion of lithium ions inside the silicon anode is one of the physical situations in which diffusion-induced stresses may be significant. An impulsive initial value problem, consisting of an initial lithium ions amount that starts impulsively to diffuse over the entire space of a silicon material, is considered. Direct approach together with Laplace and exponential Fourier transforms techniques are employed to obtain the solution in the Laplace transformed domain. The inverse Laplace transform is computed numerically to obtain the solution in the physical domain. Comparisons among the material responses to different diffusion regimes are presented.
10.18149/MPM.5112023_9
Cattaneo equation
Jeffreys equation
linear elasticity
lithium-ion batteries
impulsive problem
https://mpm.spbstu.ru/article/2023.93.9/
9-M_-Fayik%2C-A_R_-El-Dhaba%2C-E_-Awad.pdf
RAR
RUS
108-118
Andrianov
Federal State-Financed Educational Institution of Higher Learning "Komsomolsk-na-Amure State University"
Komsomolsk-on-Amur, Russia
Feoktistov
Federal State-Financed Educational Institution of Higher Learning "Komsomolsk-na-Amure State University"
Komsomolsk-on-Amur, Russia
Mechanical properties and deformation curves of the 3D-printed polycarbonate
The aim of the study was to evaluate the mechanical characteristics of polycarbonate on the example of polycarbonate samples for 3D printing, to obtain the dependence of stress intensity on strain intensity taking into account compressibility. An experimental study of the mechanical properties of polycarbonate used in 3D printing has been carried out. Polycarbonate samples were made to perform tensile tests on a 3D printer. A series of stretching experiments were carried out in the elastic stage of samples to determine the Poisson's ratio of polycarbonate. To calculate the tensile strength, the conditional yield strength, polycarbonate samples were tested for rupture. Diagrams of conditional stresses from relative deformations are constructed. Since polycarbonate for 3D printing mainly works in the elasticity stage, the study constructed diagrams of polycarbonate deformation taking into account the compressibility of the material. According to the results of the study, the average values of the tensile elastic limit, the conditional yield strength, the tensile strength and the relative deformation at rupture of samples made by the 3d- printing method of polycarbonate were obtained. Deformations curves will allow us to estimate the stress-strain state of loaded polycarbonate elements not only under simple tension, but also under conditions of complex volumetric loading, since they relate the intensity of stresses and deformations.
10.18149/MPM.5112023_10
polycarbonate
deformation curve
3D printing
stress
strain
compressibility
https://mpm.spbstu.ru/article/2023.93.10/
10-I_K_-Andrianov%2C-S_I_-Feoktistov.pdf
RAR
RUS
119-141
Wakchaure
Sanjivani College of Engineering
Maharashtra, India
Thakur
Sanjivani College of Engineering
Maharashtra, India
Mechanical and microstructural characteristics of underwater friction stir welded AA 6061-T6 joints using a hybrid GRA-artificial neural network approach
In this paper hybrid grey relations analysis (GRA) and an artificial neural network (ANN) are applied to study the influence of process parameters on the mechanical properties of friction stir welded aluminum alloy 6061-T6. Thirty experiments were performed by varying tool rotation speed, tool traverse speed, and tool tilt angle to study their effects on ultimate tensile strength, yield strength, percentage elongation, and impact strength of FSW joints. GRA was used to convert all responses into the single response variable, i.e., the grey relation grade (GRG). A feed-forward backpropagation ANN with two hidden layers composed of 9 and 7 neurons each was used to simulate the weld joint characteristics in terms of GRG. ANOVA analysis was used to study the influence of process parameters on grey relation grade. It was found that tool rotation speed has a significant impact on weld characteristics, followed by traverse speed and tilt angle. Based on the results it was revealed that tool rotation speed contributes 39.89% to the mechanical properties of underwater friction stir welding of AA 6061-T6, followed by tool traverse speed and tool tilt angle, respectively, by 29.87% and 19.59%. The tensile test demonstrates that the underwater FSW joint is approximately 8% stronger than the conventional air FSW joint due to grain refinement and increased nugget zone hardness because of less heat exposure and absorption.
10.18149/MPM.5112023_11
microstructure
underwater friction stir welding
artificial neural network
grey relation analysis
ANOVA
https://mpm.spbstu.ru/article/2023.93.11/
11-Kiran-Wakchaure%2C-Ajaykumar-Thakur.pdf
RAR
RUS
142-150
Vijayakumar
PSN College of Engineering and Technology
Tamilnadu, India
Sundarakannan
Institute of Agricultural Engineering, Saveetha school of Engineering
Tamilnadu, India
Selwin M.
SSM Institute of Engineering and Technology
Tamilnadu, India
Kavitha
Kalasalingam Academy of Research and Education
Tamilnadu, India
Lavish Kumar Singh
Sharda University
Greater Noida, India
Arunprasath
PSN College of Engineering and Technology
Tamilnadu, India
Amuthakkannan
PSR College of Engineering
India
Effect of Mechanical Properties of AL7075/Mica Powder Hybrid Metal Matrix Composite
The applications of aluminum-based Metal Matrix Composite (MMC) are very huge and it possesses good output when combined with Mica Powder. Because Mica is one of the naturally available crafted stones of minerals. It can bind with the materials easily in ambient conditions. This research work is to study the mechanical performance of the AL7075/Mica Powder hybrid MMC's. The varying grams of Mica powder (5 g to 25 g) are added with 500 grams of aluminum 7075. From the results obtained for the mechanical properties of AL7075/Mica Powder composite. Specimen 5 (500 g of AL 7075/25 g of Mica Powder) has excellent mechanical properties such as tensile strength of about 285 MPa, impact strength of about 18 J. The Vicker Hardness indentation is about 80 VHN, all these results define that after the addition of Mica Powder in the composite. The bonding nature of Mica with AL7075 always acts as a supporting agent in the defining of excellent mechanical properties of metal matrix composite.
10.18149/MPM.5112023_12
AL7075
Mica Powder
Tensile strength
Impact strength
Vicker's Hardness test
SEM morphology
https://mpm.spbstu.ru/article/2023.93.12/
12-K_-Arunprasath-et-al.pdf
RAR
RUS
151-167
Çalışkan
Middle East Technical University
Ankara, Turkey
Gürbüz
Middle East Technical University
Ankara, Turkey
Effect of compression precracking on near threshold region for AlSI 4340 steels considering compliance measurements
Determining long crack threshold as a design criterion is not a new research topic; however, some anomalies because of different test methods in literature keep it voguish. Inaccurate estimations may result in considerable variation on corresponding endurance stress for components with small crack size. Accepted approach compared to traditional methods is to perform compression-compression precracking before crack growth tests by eliminating history effects and accurately estimating long crack threshold value. Load history effects may result from specimen configuration and test procedure applied. The scale of yielding during precracking cannot be underestimated and these residual stresses have an effect on crack growth rates, even if limited by stress relief in the plastic region. Naturally formed precrack will propagate until diminishing size of the corresponding tensile zone responsible for crack growth. Compression-compression precracking under constant amplitude loading is performed to form non-propagation crack. The advantage of compression precracking is to provide a fully open crack that eliminates possible closure effects. In the scope of this paper, different stress ratios will be tested and the effect of compression precracking on near threshold will be investigated. To present reliable and accurate crack measurement that affects long threshold directly, compliance curves will be also introduced with this article.
10.18149/MPM.5112023_13
Steel
Fatigue
Compliance
Crack growth
Threshold
https://mpm.spbstu.ru/article/2023.93.13/
13-SCaliskan.pdf
RAR
RUS
168-178
Villena Zapata
Universidad Cesar Vallejo
Trujillo, Perú
Munoz Perez
Universidad Señor de Sipan
Chiclayo, Perú
Salazar Pretel
Universidad Señor de Sipan
Chiclayo, Perú
Mechanical properties of a soil improved with recycled demolition concrete for the construction of shallow foundations
To achieve a satisfactory level of safety and stability in the construction of structures in weak soils, one of the best solutions may be soil improvement, the recycling and reuse of construction and demolition materials results in the preservation of natural resources and the reduction of environmental pollution. Therefore, this experimental study proposes to evaluate the mechanical properties of soil for surface foundations incorporating recycled demolition material. The mechanical behavior of a clayey soil improved with recycled concrete from demolition (CRD) was analyzed by means of a series of compaction tests, unconfined compression of soil specimens and direct shear in mixtures with 10 %, 15 %, 20 % and 25 % CRD by weight. As a result, the highest compressive strength of the soil is obtained with 16.67 % CRD according to UCS tests; and an improvement in cohesion and friction angle for all CRD percentages. Thus, it can be demonstrated that CRD has a positive influence on the mechanical properties of a soil with clayey characteristics.
10.18149/MPM.5112023_14
mechanical properties
shallow foundations
recycled demolition material
soil improvement
unconfined compression of soil specimens
direct shear
https://mpm.spbstu.ru/article/2023.93.14/
14-Munoz-Perez-SP%2C-Salazar-Pretel-TM%2C-Villena-Zapata-LI.pdf