PERSPEKTIVNYE MATERIALY
2023, No.7
P – T – X diagram of the Co – Mg system
Y. V. Levinsky, E. V. Vershinina, M. I. Alymov
Up to now Co – Mg alloys have not been studied in detail. The information available in the literature refers to the study of changes in the Co – Mg system in the composition-temperature coordinates. However, this does not take into account the significant difference in vapor pressure values of Mg and Co in the alloy, which significantly reduces the accuracy of the results obtained. It is proposed to analyze the Co – Mg system in the coordinates composition-temperature-pressure. The following results have been obtained and presented in the article: a detailed description of the Mg – Co system diagram in the pressure-temperature coordinates, the projections of the three-phase equilibrium lines, some isobaric and isothermal sections of the p – T – Xstate diagram of Mg – Co system, Mg – Co state diagram in coordinates temperature – partial pressure Mg. The results obtained in this work can be successfully used in the development of ternary and more alloys containing cobalt and magnesium.
Keywords: cobalt – magnesium system, p – T – X state diagram, intermetallide MgCo2, partial pressure of Mg vapor.
DOI: 10.30791/1028-978X-2023-7-5-9
Levinsky Yuriy — Merzhanov Institute of structural macrokinetics and materials science, Russian Academy of Sciences (ISMAN, 142432 Chernogolovka, academician Osipian, 8),
Dr. Sci., professor, chief researcher, expert in powder metallurgy. E-mail: levinsky@mail.ru.
Vershinina Ekaterina — D. Mendeleev University of Chemical Technology of Russia (125047 Moscow, Miusskaya sq. 9), PhD, associate professor, expert in powder metallurgy. E-mail: kaver@yandex.ru.
Alymov Mikhail — Merzhanov Institute of structural macrokinetics and materials science, Russian Academy of Sciences (ISMAN, 142432 Chernogolovka, academician Osipian, 8),
Dr. Sci., professor, director, expert in powder metallurgy and physics of strength. E-mail: alymov@ism.ac.ru.
Levinsky Y.V., Vershinina E.V., Alymov M.I. P – T – H diagramma sostoyaniya sistemy Co – Mg [P – T – X diagram of the Co – Mg system]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 5 – 9. DOI: 10.30791/1028-978X-2023-7-5-9
The electrode morphology and surface
energy controlling for formation
of the ethanol fuel cells based on porous
silicon formed by Pd-assisted etching
O. V. Volovlikova, S. A. Gavrilov
The evolution of macro- and mesoporous layers of porous silicon formed by Pd-assisted etching with different duration of formation and temperature of the etching solution from 25 to 75 °С, which have the property of ethanol electrooxidation, has been studied. High values of the dissolution rate of porous silicon at a temperature of 75 °С are shown, leading to a significant loss of thickness and specific surface area of the macro- and mesoporous layer, respectively. The obtained porous layers with different surface energy and surface area, show different rates of ethanol dehydrogenation and the number of dehydrogenated ethanol molecules, which allows you to control the activity of the electrode material for ethanol fuel cells.
Keywords:porous silicon, metal-assisted etching, evolution of porous silicon morphology, surface area, porous silicon surface energy, ethanol electrooxidation, ethanol dehydrogenation.
DOI: 10.30791/1028-978X-2023-7-10-22
Volovlikova Olga — National Research University of Electronic Technology MIET (Bld. 1, Shokin Square, Zelenograd, 124498 Moscow), PhD, associate professor, senior researcher, scientist in the field of porous silicon formation and research. E-mail: 5ilova87@gmail.com.
Gavrilov Sergey — National Research University of Electronic Technology MIET (Bld. 1, Shokin Square, Zelenograd, 124498 Moscow), PhD, professor, vice-rector for research at MIET, scientist in the field of nanomaterial technologies. Email: rnd@miee.ru.
Volovlikova O.V., Gavrilov S.A. Upravlenie morfologiej i poverhnostnoj energiej elektroda dlya sozdaniya etanol'nyh toplivnyh elementov na osnove poristogo kremniya, sformirovannogo Pd-stimulirovannym travleniem [The electrode morphology and surface energy controlling for formation of the ethanol fuel cells based on porous silicon formed by Pd-assisted etching]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 10 – 22. DOI: 10.30791/1028-978X-2023-7-10-22
Effect of synthesis conditions on the physicochemical
properties of хerogels, nanopowders
and ceramic materials
in the CeO2 – Nd2O3 system
M. V. Kalinina, D. A. Dyuskina, T. V. Khamova,
L. N. Yefimova, I. Yu. Kruchinina, O. A. Shilova
By liquid-phase methods of synthesis: by the method of co-precipitation of hydroxides and co-crystallization of nitrate salts, highly dispersed mesoporous powders of the composition are synthesized: (SeO2)1 – x(Nd2O3)x(х = 0,05; 0,10; 0,15; 0,20, 0,25), having a specific pore volume of 0.030 – 0.111 cm3/g and a specific surface area of 7.40 – 119.26 m2/g. Based on them, ceramic nanomaterials of a given composition with CSR ~ 69 – 88 nm (1300 °С) were obtained. The physicochemical properties of the resulting ceramics have been studied; it was revealed that it is a solid solution with open porosity in the range of 17 – 30 %, high values of relative density of 89 – 96 %. In terms of their physicochemical properties (density, thermal expansion coefficient), the resulting ceramic materials are promising as solid oxide electrolytes for medium-temperature fuel cells.
Keywords:co-precipitation of hydroxides, co-crystallization of salts, oxides, fine powders, nanoceramics, density, porosity, fuel cells, cathode materials.
DOI: 10.30791/1028-978X-2023-7-23-33
Kalinina Marina — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Chemistry of Silicates. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, Saint Petersburg, Makarova Embankment, 2), PhD (Chem), senior researcher specialist in the field of solid state chemistry, synthesis and physicochemical properties of functional ceramic nanomaterials. E-mail: tikhonov_p-a@mail.ru.
Dyuskina Daria — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Chemistry of Silicates. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, St. Petersburg, Makarova Embankment, 2), research engineer, carries out the synthesis of materials. E-mail: randkald@mail.ru.
Khamova Tamara — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Silicate Chemistry. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, St. Petersburg, Makarova Embankment, 2), PhD in Chemistry, scientific secretary, specialist in the field of research of dispersity and textural properties of nanopowders. E-mail: tamarakhamova@gmail.com.
Efimova Larisa — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Chemistry of Silicates. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, St. Petersburg, Makarova emb., 2), researcher, specialist in the field of nanopowder thermolysis research.
Kruchinina Irina — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Chemistry of Silicates. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, St. Petersburg, Makarova Embankment, 2), Dr Sci (Eng), Director of the institute, specialist in the field of research and modeling of material properties for decentralized facilities, including chemical energy. E-mail: kruchinina@iscras.ru.
Shilova Olga — Federal State Budgetary Institution of Science of the Order of the Red Banner of Labor Institute of Chemistry of Silicates. I.V. Grebenshchikov of the Russian Academy of Sciences (199034, St. Petersburg, Makarova Embankment, 2), Dr Sci (Chem), professor, chief researcher, specialist in the field of physical chemistry and technology of nanocomposite glass-ceramic materials. E-mail: olgashilova@bk.ru.
Kalinina M.V., Dyuskina D.A., Khamova T.V., Yefimova L.N., Kruchinina I.Yu., Shilova O.A. Vliyanie uslovij provedeniya sinteza na fiziko-himicheskoe svojstva kserogelej, nanoporoshkov i keramicheskih materialov v sisteme SeO2 – Nd2O [Effect of synthesis conditions on the physicochemical properties of хerogels, nanopowders and ceramic materials in the CeO2– Nd2O3 system]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 23 – 33. DOI: 10.30791/1028-978X-2023-7-23-33
Research of mechanical properties
of unalloyed titanium processed by selective
laser melting and rotary swaging
M. Yu. Gryaznov, S. V. Shotin, V. N. Chuvildeev,
A. N. Sysoev, D. N. Kotkov, A. V. Piskunov, N. V. Sakharov,
A. V. Semenycheva, A. A. Murashov
Samples of unalloyed titanium VT1-0 with high strength characteristics (ultimate tensile strength of 820 MPa), which exceed the values for this material manufactured using conventional technologies, were produced by selective laser melting. To solve the problem of substitution of titanium alloys with commercially pure titanium in medical applications, unalloyed titanium VT1-0 with record mechanical characteristics (ultimate tensile strength of 1350 MPa) was processed by selective laser melting and rotary swaging. This value exceeds the characteristics of the highstrength Ti – 6 % Al – 4 % V alloy. The fine-dispersed martensite formed as a result of high crystallization rates under optimal mode of selective laser melting is the reason for the strength characteristics increase of unalloyed titanium VT1-0.
Keywords:unalloyed titanium VT1-0, additive technology, selective laser melting, rotary swaging, mechanical properties, microhardness, nanohardness, materials for implants.
DOI: 10.30791/1028-978X-2023-7-34-45
Gryaznov Mikhail — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), PhD (Phys-Math), deputy director, specialist in the field of metal physics, additive technologies, strength and plasticity of materials, technologies of intensive plastic deformation. E-mail: gryaznov@nifti.unn.ru.
Shotin Sergey — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), researcher, specialist in the field of metal physics, additive technology, strength and plasticity of materials, technologies of intensive plastic deformation. E-mail: otd5-nifti@yandex.ru.
Chuvildeev Vladimir — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), Dr Sci (Phys-Math), Director, specialist in materials science, metal physics, strength and plasticity of materials, additive technologies, technologies of intensive plastic deformation. E-mail: chuvildeev@nifti.unn.ru.
Sysoev Anatoly — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), leading engineer, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Kotkov Dmitry — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), leading engineer, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Piskunov Alexander —Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), researcher, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Sakharov Nikita — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), researcher, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Semenycheva Alexandra —Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), engineer, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Murashov Artem — Physical and Technical Research Institute of Lobachevsky National Research University of Nizhny Novgorod (603022 Nizhny Novgorod, Gagarin Ave., 23), engineer, specialist in the field of metal physics, additive technology, strength and plasticity of materials. E-mail: otd5-nifti@yandex.ru.
Gryaznov M.Yu., Shotin S.V., Chuvildeev V.N., Sysoev A.N., Kotkov D.N., Piskunov A.V., Sakharov N.V., Semenycheva A.V., Murashov A.A. Issledovanie mekhanicheskih svojstv nelegirovannogo titana VT1-0, poluchennogo metodami poslojnogo lazernogo splavleniya i rotacionnoj kovki [Research of mechanical properties of unalloyed titanium processed by selective laser melting and rotary swaging]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 34 – 45. DOI: 10.30791/1028-978X-2023-7-34-45
Percutaneous delivery system for nicotinamide
transdermal therapeutic system
E. G. Kuznetsova, V. A. Ryzhikova, L. A. Salomatina,
O. M. Kuryleva, V. I. Sevastianov
Recently, antioxidants, one of which is nicotinamide, have often been used in the treatment of a number of chronic cardiovascular, autoimmune, skin diseases, and diabetes mellitus. Taking into account the frequent and long-term use of nicotinamide, it seems appropriate to the authors to create a new dosage form of a transdermal therapeutic system (TTS) capable of maintaining the required level of the drug concentration in the blood for a long time. The aim of the work was to develop and to study the functional properties of a system for percutaneous delivery of nicotinamide in vitro. Four compositions of the percutaneous delivery emulsion system for the nicotinamide TTS were suggested, in which the amount of the percutaneous carrier of sodium docusate was varied. Studies of the diffusion of nicotinamide in vitro through unconserved rabbit skin have shown that an increase in the concentration of sodium docusate by three times (from 3.3 % to 9.8 %) significantly increases the amount of the diffused drug substance by 15% and decreases the amount of nicotinamide remaining in the TTS. The amount of the antioxidant founded in the skin flap was lower than the therapeutic dose (~ 1.46 % of its initial amount in TTS) 24 hours after the start of the in vitro experiment. It indicates the absence of a possible aftereffect of nicotinamide TTS in its clinical use after detaching from the patient’s skin.
Keywords: nicotinamide, percutaneous delivery system, emulsion, diffusion of the drug substance.
DOI: 10.30791/1028-978X-2023-7-46-56
Kuznetsova Eugenia — Federal State Budgetary Institution “Academician V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs”, Ministry of Health of the Russian Federation (123182, Moscow, Shchukinskaya street, 1), PhD (Biology), leading researcher, department of biomedical technologies and tissue engineering, specialist in biomedical technology, drug delivery systems. E-mail: kuzeugenia@gmail.com.
Ryzhikova Varvara — Federal State Budgetary Institution “Academician V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs», Ministry of Health of the Russian Federation (123182, Moscow, Shchukinskaya street, 1), PhD (Biology), scientific researcher, department of biomedical technologies and tissue engineering. Specialist in biomedical technology and drug delivery systems. E-mail: gavrjuchenkova@rambler.ru.
Salomatina Lydia — Federal State Budgetary Institution “Academician V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs”, Ministry of Health of the Russian Federation (123182, Moscow, Shchukinskaya street, 1), senior scientific researcher. department of biomedical technologies and tissue engineering, specialist in biotechnology, drug delivery systems. E-mail: liansa@mail.ru.
Kuryleva Olga — Federal State Budgetary Institution “Academician V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs”, Ministry of Health of the Russian Federation (123182, Moscow, Shchukinskaya street, 1), PhD (Medicine), senior scientific researcher, department of biomedical technologies and tissue engineering, specialist in biomedical technology, drug delivery system. E-mail: olga-ms13@yandex.ru.
Sevastianov Victor — Federal State Budgetary Institution “Academician V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs”, Ministry of Health of the Russian Federation (Moscow, 123182 Sсhukinskaya street, 1), professor, PhD (Biology), chief specialist of the scientific and medical personnel training department with an associative simulation center, specialist in biomaterials, tissue engineering and regenerative medicine, drug delivery systems. E-mail: viksev@yandex.ru.
Kuznetsova E.G., Ryzhikova V.A., Salomatina L.A., Kuryleva O.M., Sevastianov V.I. Sistema chreskozhnoj dostavki dlya transdermal'noj terapevticheskoj sistemy nikotinamida [Percutaneous delivery system for nicotinamide transdermal therapeutic system]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 46 – 56. DOI: 10.30791/1028-978X-2023-7-46-56
Compressibility of composite materials
based on fibrous filler
of various compositions
T. A. Pereverzeva, E. Yu. Efremova, N. V. Chernousova,
A. V. Dedov
The compressibility of composite materials obtained by impregnation with water dispersion of polyurethane of webs made of polyethylene terephthalate fibers with a diameter of 20 µm and a mixture of these fibers with polyethylene terephthalate fibers with a diameter of 42 µm is investigated. The influence of the composition on the formation of the structure of canvases and composite materials based on them is shown. In the process of heat treatment, the volume of webs made of fibers with a diameter of 20 µm increases and decreases for webs based on a mixture of fibers of different diameters. Compared with canvases, with a degree of impregnation less than 1.0, the water permeability of materials of various compositions increases by 1.5 – 2.0 times. A model is proposed to predict the degree of compressibility of composite materials from the degree of impregnation and load. It is established that compressibility of composite materials decreases when using a web as a fibrous filler in which the fibers are oriented perpendicular to the surface of the web. Less effective for reducing compressibility is the use of a web made of a mixture of fibers of different diameters as a fibrous filler.
Keywords:composite material, non-woven fabric, compressibility.
DOI: 10.30791/1028-978X-2023-7-57-64
Pereverzeva Tatiana — Kosygin Russian State University (Technologies. Design. Art) (117997, Moscow, Sadovnicheskaya str., 33, p. 1), postgraduate student of department of chemistry and technology of polymer materials and nanocomposites, specialist in chemical technologies, technology of dyeing materials. E-mail: leshenko.1996@mail.ru.
Efremova Elionora — Kosygin Russian State University (Technologies. Design. Art) (117997, Moscow, Sadovnicheskaya str., 33, p. 1), engineer of the department of chemistry and technology of polymer materials and nanocomposites, specialist in the field of chemical technologies, technology of fibrous materials. E-mail: efremova120800@icloud.com.
Chernousova Natalia — Kosygin Russian State University (Technologies. Design. Art) (117997, Moscow, Sadovnicheskaya str., 33, p. 1), PhD, associate professor department of Chemistry and technology of polymer materials and nanocomposites, specialist in the field of polymer film materials and artificial leather, packaging materials. E-mail: chersov@gmail.com.
Kozhevnikova Olga — Moscow Polytechnic University (107023 Moscow, B. Semenovskaya St., 38), engineer of the Department of Chemistry and Technology of Polymer Materials and Nanocomposites, specialist in composite materials E-mail: efgenikum@gmail.com.
Dedov Alexander — Moscow Polytechnic University ((107023 Moscow, B. Semenovskaya St., 38), Dr. Sci. (Eng), professor of the department of innovative materials of the printing media industry, specialist in composite materials. E-mail: dedovs55@rambler.ru.
Pereverzeva T.A., Efremova E.Yu., Chernousova N.V., Dedov A.V. Szhimaemost' kompozicionnyh materialov na osnove voloknistogo napolnitelya razlichnogo sostava [Compressibility of composite materials based on fibrous filler of various compositions]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 57 – 64. DOI: 10.30791/1028-978X-2023-7-57-64
Effect of multigraphene on the resistance
of plates from hard alloys
S. A. Eremin, V. N. Anikin, D. V. Rudenko,
A. M Kolesnikova, Y. V. Sobolev,
V. V. Kuzin, M. Y. Fedorov, N. A. Revyakina
In the work, experiments were carried out on the production and testing of hard alloys from powders of the VK10KHOM and VRK15 grades coated with multigraphene obtained by the electrochemical method. Samples with multigraphene were sintered under standard conditions for grades VK10KHOM and VRK15. In the weight ratio, the amount of multigraphene was 0.1 wt. % for the VK10KHOM grade alloy and 0.1 wt. % and 0.5 wt. % for the VRK15 grade. Friction tests of VK10KhOM samples showed that the width of the wear areas of samples with multigraphene is 8 % less than in the original ones. At 0.1 wt. % graphene, the density of the VK10KHOM grade is 14.5 and VRK15 is 14.0, and the porosity is 0.02 % and 2 %, respectively. Comparative tests were carried out on cutting titanium grade VT-3. As a result of cutting, it was found that the coating of powders with multigraphene increases the resistance of carbide inserts of both grades. It is shown that for VRK15 the plate durability increased by 4 times, and for the VK10KHOM grade it was not possible to establish the plate failure time. The increase in wear resistance is presumably caused by a decrease in the coefficient of friction due to multigraphene, which, dissolving in the hard alloy, precipitates in the form of nanographite clusters.
Keywords: hard alloy, multigraphene, carbon, wear resistance, friction.
DOI: 10.30791/1028-978X-2023-7-65-72
Eremin Sergey — FSBI All-Russian Scientific Research Institute of Hard Alloys (117638, Moscow, Varshavskoe shosse, 56), PhD (Eng), Head of the laboratory of hard alloys and superhard materials, specialist in the field of hard alloys and superhard materials. E-mail: yeryominsa@mail.ru.
Anikin Vyacheslav — FSBI All-Russian Scientific Research Institute of Hard Alloys (117638, Moscow, Varshavskoe shosse, 56), PhD (Eng), head of scientific and technological complex, specialist in the field of hard alloys and superhard materials.
Rudenko Denis — FSBI All-Russian Scientific Research Institute of Hard Alloys (117638, Moscow, Varshavskoe shosse, 56), senior engineer, specialist in the field of hard alloys and superhard materials.
Kolesnikova Anastasia — FSBI All-Russian Scientific Research Institute of Hard Alloys (117638, Moscow, Varshavskoe shosse, 56), senior engineer, specialist in the field of scanning electron microscopy and microstructure research.
Sobolev Yury — Sopromat LLC (111024 Moscow, Entuziastov highway, 5) General Director, specialist in the field of hard alloys and wear-resistant coatings.
Kuzin Valery — MSTU STANKIN (127055, Vadkovsky lane, 3A, bldg 1), Dr Sci (Eng), head of department, specialist in the field of metalworking equipment and tools.
Fyodorov Mikhail — MSTU STANKIN (127055 Vadkovsky pereulok, 3A, bldg. 1), PhD (Eng), senior research associate.
Revyakina Nadezhda — FSBI All-Russian Scientific Research Institute of Hard Alloys (117638 Moscow, Varshavskoe highway, 56), engineer, specialist in the field of hard alloys and superhard materials.
Eremin S.A., Anikin V.N., Rudenko D.V., Kolesnikova A.M., Sobolev Y.V., Kuzin V.V., Fedorov M.Y., Revyakina N.A. Vliyanie mul'tigrafena na stojkost' plastin iz tverdyh splavov [Effect of multigraphene on the resistance of plates from hard alloys]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 65 – 72. DOI: 10.30791/1028-978X-2023-7-65-72
Laser-ultrasonic study of local porosity
distribution in CFRP stringer panels
Yu. G. Sokolovskaya, N. B. Podymova, A. A. Karabutov
The paper presents a method for quantifying the porosity of carbon fiber structures based on laser excitation of probing ultrasonic pulses. A method for estimating the porosity of a material from the experimentally measured phase velocity of longitudinal acoustic waves propagating in it is proposed. Using the example of control samples and real structures made of carbon fiber, the possibility of obtaining distributions of local porosity values in the studied section of the structure is demonstrated. It is shown that in the studied structures there are regions with a significant variation in the value of local porosity. The proposed method can be used to control the quality of manufactured composite structures, as well as to study the internal changes in structure during operation.
Keywords: polymer-matrix composites, CFRP, acoustic methods, ultrasonic, non-destructive testing, porosity, voids.
DOI: 10.30791/1028-978X-2023-7-73-83
Sokolovskaya Yulia — M.V. Lomonosov Moscow State University, Faculty of Physics (119991, Moscow Leninslie Gori, 1/2), PhD, researcher, specialist in the field of laser optoacoustic methods of studying composite materials and other condensed matter. E-mail: yu.sokolovskaya@mail.ru.
Podymova Natalia — M.V. Lomonosov Moscow State University, Faculty of Physics (119991, Moscow Leninslie Gori, 1/2), PhD, associate professor, specialist in the field of laser optoacoustics, optoacoustic methods of studying composite materials and other condensed matter. E-mail: npodymova@mail.ru.
Karabutov Alexander — M.V. Lomonosov Moscow State University, Faculty of Physics (119991, Moscow Leninslie Gori, 1/2), PhD, professor, specialist in the field of acoustics and laser optoacoustics. E-mail: aak@optoacoustic.ru.
Sokolovskaya Yu.G., Podymova N.B., Karabutov A.A. Lazerno-ul'trazvukovoe issledovanie raspredeleniya lokal'noj poristosti v ugleplastikovyh stringernyh panelyah [Laser-ultrasonic study of local porosity distribution in CFRP stringer panels]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 7, pp. 73 – 83. DOI: 10.30791/1028-978X-2023-7-73-83
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