Статті в журналах: "Firming complex processing of materials"

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Marhunova, Alena Mikhailovna, Liudmila Mikhailovna Paulouskaya, Diana Anatolievna Safronova, and Tatyana Ivanovna Drobilina. "NFLUENCE OF FIRMING AGENTS OF STRUCTURE OF FRUIT AND VEGETABLES OF TINNED PRODUCTION." Food Industry: Science and Technology 14, no. 3(53) (September 14, 2021): 79–88. http://dx.doi.org/10.47612/2073-4794-2021-14-3(53)-79-88.

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Results of researches on application of firming agents at manufacturing of the tinned production, providing formation of the set structure of fruit and vegetables are resulted. Laws of preservation of structure of tinned fruit and vegetables depending on a kind of used firming agents, regime parametres of processing by them of raw materials, calcium or magnesium maintenances in finished goods are established. Methodical recommendations about application of firming agents of structure of fruit and vegetables are developed at the thermal processing which use will promote improvement of consumer characteristics of a domestic production.

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2

Daminev, R. R., and M. Kh Kurbangaleeva. "Complex processing of phosphogypsum." IOP Conference Series: Earth and Environmental Science 981, no. 4 (February 1, 2022): 042021. http://dx.doi.org/10.1088/1755-1315/981/4/042021.

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Abstract The raw material base for many branches of the chemical industry is depleting; the issue of involving in the production of both raw materials with a low content of useful components and industrial waste becomes more and more urgent. Waste from production falls as a dead load on the cost of production of enterprises and often gives rise to a number of difficult-to-solve problems. This also applies to phosphogypsum ,i. e. a large-tonnage waste from the production of phosphoric acid by the sulfuric acid method. Phosphogypsum contains elements such as Ca, Mg, F, P, Si, Sr and rare earth elements. Secondary waste generated in this case is of limited demand and is practically not used. The complex composition of phosphogypsum as a raw material for the chemical industry should be considered as an opportunity to reduce mining, provided that the valuable components that make up its composition are maximally extracted from it into marketable products. The problem can be successfully solved using the technology of complex processing. Complex processing can be conditionally divided into three stages: obtaining ammonium sulfate or sodium sulfate; concentrate of rare earth elements; calcium silicate or calcium carbonate. Phosphogypsum processing is aimed at solving environmental problems that exist during its storage in dumps at phosphate fertilizer enterprises; at the same time, the negative impact of phosphogypsum components on the environment is reduced.

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Lishtvan, I. I., U. M. Dudarchyk, V. M. Kraiko, A. V. Anufryieva, and N. A. Bulgakova. "Processing raw materials of Slavnoe peat deposit." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 56, no. 2 (June 7, 2020): 212–19. http://dx.doi.org/10.29235/1561-8331-2020-56-2-212-219.

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The estimation of the resources and qualitative content of the raw materials of Slavnoe peat deposit, which is reserved by the government for biothermochemical proceeding, has been conducted. The potential directions of the complex use of raw materials are grounded based on the conducted complex of the research of organic and mineral, group and botanical contents, technological characteristics and the peat funds of Slavnoe deposit. Activated carbon, oil sorbent and concentrated microfertilizer are suggested as the main types of the products of the deep complex processing of the peat studied.

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Shi, Zhuo’er, and Zheng Bao. "Group-normalized processing of complex wavelet packets." Science in China Series E: Technological Sciences 40, no. 1 (February 1997): 28–43. http://dx.doi.org/10.1007/bf02916588.

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Gordienko, P. S., V. A. Dostovalov, and E. V. Pashnina. "Hydrofluoride Method of Complex Processing of Titanium-Containing Raw Materials." Solid State Phenomena 265 (September 2017): 542–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.542.

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The use of titanium dioxide is so diverse that varies from food to heavy industry and it is the main substance in the titanium industry. Over 90% of the world's mined titanium concentrates are processed to produce pigments. The sources for the production of titanium dioxide are the typically used titanium-containing ores including minerals rutile, ilmenite, and others. The volume of world production of titanium dioxide pigment exceeds 5 million tons per year and it is carried out in two ways: sulphate and chlorine (in approximately equal volumes). The changed approach to the green production processes requires the improvement of existing technologies and the development of new methods for processing titanium-containing raw materials. The authors have experimentally confirmed the high efficiency of complex, waste-free processing of titanium-containing raw materials developed by hydrofluoride. Creating pigment production on the basis hydrofluoride method will meet not only the domestic needs but also offer thepigment for export, as its parameters will surpass those of the best world analogues.

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Sevostyanov, M. V., V. S. Sevostyanov, A. V. Osokin, and I. G. Martakov. "Theory and practice of complex processing of technogenic fibrous materials." IOP Conference Series: Materials Science and Engineering 327 (March 2018): 032035. http://dx.doi.org/10.1088/1757-899x/327/3/032035.

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Yamato, Masafumi, and Tsunehisa Kimura. "Magnetic Processing of Diamagnetic Materials." Polymers 12, no. 7 (July 3, 2020): 1491. http://dx.doi.org/10.3390/polym12071491.

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Currently, materials scientists and nuclear magnetic resonance spectroscopists have easy access to high magnetic fields of approximately 10 T supplied by superconducting magnets. Neodymium magnets that generate magnetic fields of approximately 1 T are readily available for laboratory use and are widely used in daily life applications, such as mobile phones and electric vehicles. Such common access to magnetic fields—unexpected 30 years ago—has helped researchers discover new magnetic phenomena and use such phenomena to process diamagnetic materials. Although diamagnetism is well known, it is only during the last 30 years that researchers have applied magnetic processing to various classes of diamagnetic materials such as ceramics, biomaterials, and polymers. The magnetic effects that we report herein are largely attributable to the magnetic force, magnetic torque, and magnetic enthalpy that in turn, directly derive from the well-defined magnetic energy. An example of a more complex magnetic effect is orientation of crystalline polymers under an applied magnetic field; researchers do not yet fully understand the crystallization mechanism. Our review largely focuses on polymeric materials. Research topics such as magnetic effect on chiral recognition are interesting yet beyond our scope.

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Loginova, I. V., M. V. Kharina, Z. A. Kanarskaya, M. N. Meshcheryakova, and N. Z. Dubkova. "Complex processing of plant raw materials for furfural and glucose production." IOP Conference Series: Earth and Environmental Science 677, no. 5 (March 1, 2021): 052014. http://dx.doi.org/10.1088/1755-1315/677/5/052014.

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Khazael, Behnam, Hadi Tabatabaee Malazi, and Siobhan Clarke. "Complex Event Processing in Smart City Monitoring Applications." IEEE Access 9 (2021): 143150–65. http://dx.doi.org/10.1109/access.2021.3119975.

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Kovalevskyy, S., and O. Kovalevska. "MAGNETIC RESONANCE PROCESSING OF MATERIALS." Odes’kyi Politechnichnyi Universytet Pratsi 3, no. 62 (December 2020): 29–38. http://dx.doi.org/10.15276/opu.3.62.2020.04.

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Acoustic devices for determining the elasticity modulus based on the measurement of the samples frequency resonant oscillation due to the sample exposure to acoustic waves with consistently changed frequencies. Objective: Development of an algorithm for increasing the hardness of materials due to magnetic resonance imaging. Materials and methods: The paper shows the possibility of using as a uniform flux to influence the volume of thematerial of the magnetic field formed by powerful permanent magnets. The process of influencing the volume of material of the experimental samples was that the effect of a uniform magnetic flux permeating the sample is initiated in a result of resonant oscillations of the sample caused by broadband exposure of equal amplitude using a “white noise” generator and a piezoelectric emitter. Results: Treatment of samples of materials placed in a uniform magnetic field, resonant polyfrequency vibrations with nanoscale amplitude in the range of 20...80 nm, allows you to change the viscosity of the material, the modulus of elasticity of the material and the hardness of material samples to improve the performance of these materials . Conclusions: Nanoscale amplitudes of natural oscillations of objects of complex shape in energy fields, which include uniform magnetic fields, can correct the physical and mechanical properties of materials of such objects in order to achieve their identity or add strictly defined properties.

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11

Pardee, William J., Michael A. Shaff, and Barbara Hayes-Roth. "Intelligent control of complex materials processes." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 4, no. 1 (February 1990): 55–65. http://dx.doi.org/10.1017/s0890060400002249.

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A blackboard based intelligent control system has been developed for a family of complex non-equilibrium materials processes. The system is being tested in the laboratory for control of a particular high risk, high value-added step in the manufacture of carbon-carbon composites. The system uses knowledge based methods in several fundamental ways to fill gaps left by control theory and process models. Most notable of these are (1) inferring from indirect measurements and history the process state at multiple, changing levels of abstraction, (2) anticipating problems and planning actions to reach goal (end of process) states, (3) selecting, executing and interpreting approximate models to predict process progression and (4) changing control objectives as the physical situation changes. The system has been demonstrated to substantially reduce processing time.

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Torralba, José M., Javier Hidalgo, and Antonia Jiménez Morales. "Powder injection moulding: processing of small parts of complex shape." International Journal of Microstructure and Materials Properties 8, no. 1/2 (2013): 87. http://dx.doi.org/10.1504/ijmmp.2013.052648.

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13

Medkov, Mikhail, Galina Krysenko, Dantiy Epov, Pavel Sitnik, and Valentin Avramenko. "Complex processing of titanium-rare metal raw material." E3S Web of Conferences 56 (2018): 03019. http://dx.doi.org/10.1051/e3sconf/20185603019.

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The paper is devoted to investigation of the complex processing of titanium-rare metal raw materials with ammonium hydrodifluoride. It is stated that fluorination of the main components of the mineral raw materials with ammonium hydrodifluoride proceeds with formation of complex ammonium fluorometallates and simple fluorides. It is showed that in the process of aqueous leaching of the fluorinated mineral raw material niobium and tantalum completely pass into solution together with titanium, iron, and silicon fluoroammonium salts while all the rare-earth elements stay in the insoluble residue as complex fluorosodium salts together with CaF2. The method of separation of the fluoroammonium salts with obtaining marketable products and isolation of the rare-earth elements from the insoluble residue is offered.

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14

Bill, Joachim. "Bio-Inspired Processing of Ceramic Materials." Advances in Science and Technology 45 (October 2006): 643–51. http://dx.doi.org/10.4028/www.scientific.net/ast.45.643.

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Ceramic processing without firing, sintering and expensive equipment represents a growing research field within materials science. With respect to the search of new synthesis pathways living nature provides paradigms for procedures that occur at ambient conditions and by apparently simple means. In this connection, biomineralization yields highly complex organic/inorganic structures, e. g. within nacre or bones. In general, the formation of these biominerals involves organic molecules that act as templates during the mineralization of inorganic phases. Bio-inspired ceramic synthesis aims to imitate such principles by technical means. Accordingly, these routes consider the template-induced formation and the structural design of ceramics from solutions of suitable metal salts. This paper describes such routes by means of the preparation of ceramics like titania, vanadia, and zinc oxide. The influence of (bio)organic molecules (e. g. polyelectrolytes, self-assembled monolayers, amino acids, peptides and proteins) on the micro- and nanostructure formation and on the evolution of the morphology of these solids will be discussed. Furthermore, mechanical as well as functional properties of the obtained architectures are treated.

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15

Uchita, Yoshifumi, Tadashi Endo, Hirotsugu Takizawa, and Masahiko Shimada. "Soft Chemical Processing of Metyl-Nitroanilinium Dihydrogenmonophosphate Complex." Journal of the Japan Society of Powder and Powder Metallurgy 40, no. 10 (1993): 1002–6. http://dx.doi.org/10.2497/jjspm.40.1002.

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16

Mokritskiy, B. Y. "Milling Cutters for Processing Highly Hard Materials." Proceedings of Higher Educational Institutions. Маchine Building, no. 5 (746) (May 2022): 10–14. http://dx.doi.org/10.18698/0536-1044-2022-5-10-14.

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Blade machining of workpiece surfaces for parts made of high hardness material is a complex process. Solid-carbide end mills are mainly used, the range of which is wide. However, it is difficult to choose a rational milling cutter, since there are no recommendations for choosing it. The article presents the methodology and recommendations developed for selecting a cutter for workpieces, the surface layer material of which has a hardness of HRC 65. The results obtained do not solve the problem as a whole, but allow a reasoned choice of an efficient cutter of a small diameter. As a comparison criterion, the period of cutter life under equal operating conditions was adopted.

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17

Collins, George, and Donald J. Rej. "Plasma Processing of Advanced Materials." MRS Bulletin 21, no. 8 (August 1996): 26–31. http://dx.doi.org/10.1557/s0883769400035673.

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A plasma, commonly referred to as the “fourth state of matter,” is an ensemble of randomly moving charged particles with a sufficient particle density to remain, on average, electrically neutral. While their scientific study dates from the 19th century, plasmas are ubiquitous, comprising more than 99% of the known material universe. The term “plasma” was first coined in the 1920s by Irving Langmuir at the General Electric Company after the vague resemblance of a filamented glow discharge to a biological plasma.Plasmas are studied for many reasons. Physicists analyze the collective dynamics of ions and electron ensembles, utilizing principals of classical electromagnetics, and fluid and statistical mechanics, to better understand astrophysical, solar, and ionospheric phenomenon, and in applied problems such as thermonuclear fusion. Electrical engineers use plasmas to develop efficient lighting, and high-power electrical switchgear, and for magneto-hydrodynamic (MHD) power conversion. Aerospace engineers apply plasmas for attitude adjustment and electric propulsion of satellites. Chemists, chemical engineers, and materials scientists routinely use plasmas in reactive ion etching and sputter deposition. These methods are commonplace in microelec tronics since they allow synthesis of complex material structures with submicron feature sizes. A substantial portion of the multi-billion-dollar market for tooling used to manufacture semiconductors employs some form of plasma process. When compared with traditional wet-chemistry techniques, these dry processes result in minimal waste generation. Plasmas are also useful in bulk processing—for example as thermal sprays for melting materials.While the quest for controlled thermonuclear fusion dominated much of plasma research in the 1960s and 1970s, in the last 20 years it has been the application of plasmas to materials processing that has provided new challenges for many plasma practitioners. It is not surprising that the guest editors and several of the authors for this issue of MRS Bulletin come from a fusion plasma-physics background.

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Flores, Gerardo Alvear, Carlos Risopatron, and Joe Pease. "Processing of Complex Materials in the Copper Industry: Challenges and Opportunities Ahead." JOM 72, no. 10 (July 6, 2020): 3447–61. http://dx.doi.org/10.1007/s11837-020-04255-9.

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Korotkova, A. A., A. A. Korotkova, S. E. Bozhkova, D. N. Pilipenko, and L. F. Obrushnikova. "Development of low-calorie jelly for complex processing of dairy raw materials." IOP Conference Series: Earth and Environmental Science 548 (September 2, 2020): 082078. http://dx.doi.org/10.1088/1755-1315/548/8/082078.

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Macia, Hermenegilda, Valentin Valero, Gregorio Diaz, Juan Boubeta-Puig, and Guadalupe Ortiz. "Complex Event Processing Modeling by Prioritized Colored Petri Nets." IEEE Access 4 (2016): 7425–39. http://dx.doi.org/10.1109/access.2016.2621718.

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21

Schmidt, Johanna, Hamada Elsayed, Enrico Bernardo, and Paolo Colombo. "Digital light processing of wollastonite-diopside glass-ceramic complex structures." Journal of the European Ceramic Society 38, no. 13 (October 2018): 4580–84. http://dx.doi.org/10.1016/j.jeurceramsoc.2018.06.004.

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Vigdergauz, S. "Plane elastostatic stress analysis in complex variables: A wavelet processing perspective." Mathematics and Mechanics of Solids 22, no. 2 (August 5, 2016): 176–90. http://dx.doi.org/10.1177/1081286515577689.

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The well-known Kolosov–Muskhelishvili (KM) representation of the Airy function for 2D stress analysis in complex variable terms is enhanced by combining it with Walsh wavelets decomposition. It allows us to perform general analytical derivations up to the maximum extent possible which, in turn, provides a basis for developing a new stress computation algorithm readily incorporated into the routine single scale KM scheme. The mathematical treatment of the wavelet application is supported by a number of examples where non-trivial closed-form solutions are known and serve as a benchmark for numerical simulations. The comparison shows that the proposed framework has better performance than the conventional Fourier transform, especially when it comes to non-smooth stress distributions.

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23

Nisar, Ambreen, Cheng Zhang, Benjamin Boesl, and Arvind Agarwal. "Unconventional Materials Processing Using Spark Plasma Sintering." Ceramics 4, no. 1 (January 8, 2021): 20–40. http://dx.doi.org/10.3390/ceramics4010003.

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Spark plasma sintering (SPS) has gained recognition in the last 20 years for its rapid densification of hard-to-sinter conventional and advanced materials, including metals, ceramics, polymers, and composites. Herein, we describe the unconventional usages of the SPS technique developed in the field. The potential of various new modifications in the SPS technique, from pressureless to the integration of a novel gas quenching system to extrusion, has led to SPS’ evolution into a completely new manufacturing tool. The SPS technique’s modifications have broadened its usability from merely a densification tool to the fabrication of complex-shaped components, advanced functional materials, functionally gradient materials, interconnected materials, and porous filter materials for real-life applications. The broader application achieved by modification of the SPS technique can provide an alternative to conventional powder metallurgy methods as a scalable manufacturing process. The future challenges and opportunities in this emerging research field have also been identified and presented.

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Nisar, Ambreen, Cheng Zhang, Benjamin Boesl, and Arvind Agarwal. "Unconventional Materials Processing Using Spark Plasma Sintering." Ceramics 4, no. 1 (January 8, 2021): 20–39. http://dx.doi.org/10.3390/ceramics4010003.

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Spark plasma sintering (SPS) has gained recognition in the last 20 years for its rapid densification of hard-to-sinter conventional and advanced materials, including metals, ceramics, polymers, and composites. Herein, we describe the unconventional usages of the SPS technique developed in the field. The potential of various new modifications in the SPS technique, from pressureless to the integration of a novel gas quenching system to extrusion, has led to SPS’ evolution into a completely new manufacturing tool. The SPS technique’s modifications have broadened its usability from merely a densification tool to the fabrication of complex-shaped components, advanced functional materials, functionally gradient materials, interconnected materials, and porous filter materials for real-life applications. The broader application achieved by modification of the SPS technique can provide an alternative to conventional powder metallurgy methods as a scalable manufacturing process. The future challenges and opportunities in this emerging research field have also been identified and presented.

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25

Stokes, Vijay K. "Thermoplastics as Engineering Materials: The Mechanics, Materials, Design, Processing Link." Journal of Engineering Materials and Technology 117, no. 4 (October 1, 1995): 448–55. http://dx.doi.org/10.1115/1.2804738.

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While the use of plastics has been growing at a significant pace because of weight reduction, ease of fabrication of complex shapes, and cost reduction resulting from function integration, the engineering applications of plastics have only become important in the past fifteen years. An inadequate understanding of the mechanics issues underlying the close coupling among the design, the processing (fabrication), and the assembly with these materials is a barrier to their use in structural applications. Recent progress on some issues relating to the engineering uses of plastics is surveyed, highlighting the need for a better understanding of plastics and how processing affects the performance of plastic parts. Topics addressed include the large deformation behavior of ductile resins, fiber orientation in chopped-fiber filled materials, structural foams, random glass mat composites, modeling of thickness distributions in blow-molded and thermoformed parts, dimensional stability (shrinkage, warpage, and residual stresses) in injection-molded parts, and welding of thermoplastics.

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26

Rimkevich, V. S., Yu N. Malovitskii, S. A. Bogidaev, A. A. Pushkin, L. P. Dem’yanova, and T. Yu Eranskaya. "Effective technologies for complex processing of non-bauxite ores." Russian Journal of Non-Ferrous Metals 49, no. 2 (April 2008): 97–103. http://dx.doi.org/10.3103/s1067821208020065.

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27

Mavrina, L., E. Shaikhlislamova, I. Khasanova, L. Karimova, N. Muldasheva, and N. Beigul. "Professional risk in processing processes complex (review of literature)." Sanitarnyj vrač (Sanitary Inspector), no. 3 (March 1, 2020): 29–37. http://dx.doi.org/10.33920/med-08-2003-03.

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The relevance of the problem. Ensuring safe working conditions is currently an urgent problem of our time. Purpose of work. Analysis of bibliographic data on issues of occupational risk, industrial injuries among workers of the processing complex. Materials and methods. To achieve this goal, materials related to this topic were studied in the works of domestic and foreign scientists. Results. A lot of scientific works are devoted to the problem of assessing professional risk in the production of a processing complex. Modern research has proved that risk assessment is one of the main methods for analyzing the impact of various production factors on an employee. Conclusion Occupational morbidity and industrial injuries are a consequence of unsatisfactory conditions and labor protection in enterprises.

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Rubbers, P., and C. J. Pritchard. "Complex plane split spectrum processing: simulations of zero degree long waves." Insight - Non-Destructive Testing and Condition Monitoring 47, no. 1 (January 1, 2005): 20–24. http://dx.doi.org/10.1784/insi.47.1.20.56926.

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29

Li, Y. J., A. Savan, A. Kostka, H. S. Stein, and A. Ludwig. "Accelerated atomic-scale exploration of phase evolution in compositionally complex materials." Materials Horizons 5, no. 1 (2018): 86–92. http://dx.doi.org/10.1039/c7mh00486a.

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Combining nanoscale-tip arrays with combinatorial thin film deposition and processing as well as direct atomic-scale characterization (APT and TEM) enables accelerated exploration of the temperature- and environment-dependent phase evolution in multinary materials systems.

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Kuang, Xiao, Jiangtao Wu, Kaijuan Chen, Zeang Zhao, Zhen Ding, Fengjingyang Hu, Daining Fang, and H. Jerry Qi. "Grayscale digital light processing 3D printing for highly functionally graded materials." Science Advances 5, no. 5 (May 2019): eaav5790. http://dx.doi.org/10.1126/sciadv.aav5790.

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Three-dimensional (3D) printing or additive manufacturing, as a revolutionary technology for future advanced manufacturing, usually prints parts with poor control of complex gradients for functional applications. We present a single-vat grayscale digital light processing (g-DLP) 3D printing method using grayscale light patterns and a two-stage curing ink to obtain functionally graded materials with the mechanical gradient up to three orders of magnitude and high resolution. To demonstrate the g-DLP, we show the direct fabrication of complex 2D/3D lattices with controlled buckling and deformation sequence, negative Poisson’s ratio metamaterial, presurgical models with stiffness variations, composites for 4D printing, and anti-counterfeiting 3D printing.

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Sonkusare, Reshma, Aditya Swain, M. R. Rahul, Sumanta Samal, N. P. Gurao, Krishanu Biswas, Sudhanshu S. Singh, and N. Nayan. "Establishing processing-microstructure-property paradigm in complex concentrated equiatomic CoCuFeMnNi alloy." Materials Science and Engineering: A 759 (June 2019): 415–29. http://dx.doi.org/10.1016/j.msea.2019.04.096.

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Sevostyanov, Vladimir S., Nikolai T. Shain, Svetlana V. Sverguzova, Maxim V. Sevostyanov, Dmitry N. Perelygin, and Alexey V. Uralskij. "Resource-energy-saving technologies and equipment for complex processing of man-made materials." Image Journal of Advanced Materials and Technologies 6, no. 4 (2021): 279–90. http://dx.doi.org/10.17277/jamt.2021.04.pp.279-290.

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Using the fundamental kinetic laws of materials grinding processes, a resource-energy-saving technology for complex processing and mechanoactivation of mineral components has been developed. For the technology, patent-protected energy-efficient grinding units for selective grinding of materials have been developed: press-roll grinders (PRG) for volume-shear deformation (VSD) of materials and obtaining their microdefect structure; drum ball mills (DBMs) with internal energy-exchanging devices (IEDs), which implement impact-crushing-abrading action with less 10–20 % grinding load. A technological complex was developed for mechanoactivation of fine-grained materials and obtain nanostructured composite mixtures from them: “PRG–VSD”– vibration-centrifugal unit (VCU) of selective grinding at each stage – vortex-acoustic dispersants (VADs) for obtaining ultrafine particles < 5 μm with mechanical-aerodynamic and acoustic grinding. Resource-energy-saving technology has been tested for complex thermomechanical processing of quartzite-iron-containing was teat the Lebedinsky mining and processing plant for production of pigments-fillers for the purpose of volumetric dyeing of products.

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Zobeiry, Navid, Alireza Forghani, Chao Li, Kamyar Gordnian, Ryan Thorpe, Reza Vaziri, Goran Fernlund, and Anoush Poursartip. "Multiscale characterization and representation of composite materials during processing." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2071 (July 13, 2016): 20150278. http://dx.doi.org/10.1098/rsta.2015.0278.

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Given the importance of residual stresses and dimensional changes in composites manufacturing, process simulation has been the focus of many studies in recent years. Consequently, various constitutive models and simulation approaches have been developed and implemented for composites process simulation. In this paper, various constitutive models, ranging from elastic to nonlinear viscoelastic; and simulation approaches ranging from separated flow/solid phases to multiscale integrated phases are presented and their applicability for process simulation is discussed. Attention has been paid to practical aspects of the problem where the complexity of the model coupled with the complexity and size scaling of the structure increases the characterization and simulation costs. Two specific approaches and their application are presented in detail: the pseudo-viscoelastic cure hardening instantaneously linear elastic (CHILE) and linear viscoelastic (VE). It is shown that CHILE can predict the residual stress formation in simple cure cycles such as the one-hold cycle for HEXCEL AS4/8552 where the material does not devitrify during processing. It is also shown that using this simple approach, the cure cycle can be modified to lower the residual stress level and therefore increase the mechanical performance of the composite laminate. For a more complex cure cycle where the material is devitrified during a post-cure, it is shown that a more complex model such as VE is required. This article is part of the themed issue ‘Multiscale modelling of the structural integrity of composite materials’.

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34

Shein, N. T., V. S. Sevostyanov, V. V. Obolonsky, M. V. Sevostyanov, P. Yu Goryagin, and V. A. Babukov. "Resource and energy-saving technologies of complex processing and utilization of technogenic materials." IOP Conference Series: Materials Science and Engineering 552 (June 25, 2019): 012042. http://dx.doi.org/10.1088/1757-899x/552/1/012042.

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35

Ivanov, N. M. "Digital processing of complex signals in multielement array antennas." Journal of Communications Technology and Electronics 52, no. 2 (February 2007): 147–52. http://dx.doi.org/10.1134/s1064226907020040.

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Moreno, Nathalie, Manuel F. Bertoa, Loli Burgueno, and Antonio Vallecillo. "Managing Measurement and Occurrence Uncertainty in Complex Event Processing Systems." IEEE Access 7 (2019): 88026–48. http://dx.doi.org/10.1109/access.2019.2923953.

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Nemenenok, B. M., G. V. Downar, A. G. Slutsky, V. A. Sheinert, D. O. Kapusta, I. I. Loganiyk, and A. D. Rulenkov. "Complex processing of tin-lead dross into solders and ligatures." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 1 (April 7, 2020): 93–98. http://dx.doi.org/10.21122/1683-6065-2020-1-93-98.

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The use of industrial waste is one of the main problems of the modern economy. In Belarus, there is no primary metallurgical processing of natural raw materials, so the use of secondary materials and production waste is a very relevant and important task for the industry, given into account that the cost of metals extracted from secondary raw materials is several times less than the primary ones.One of the types of such raw materials is tin-lead dross (ash), which consists of tin and lead oxides with inclusions of the metal component beads. The most valuable element in dross is tin, the price of which is much higher than the cost of many non-ferrous metals. The aim of the work was to study the influence of various technological factors on the metallurgical output during the processing of tin-lead ash into solders and ligatures.In this regard the results of previous studies related to the extraction of tin and lead in the processing of secondary raw materials were summarized, and new data on technological methods for deeper metallurgical processing of dross (ash) were presented. This allowed them to develop options for obtaining high-quality solder type POS 61 and ligatures.

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Gil-Kowalczyk, Małgorzata, Renata Łyszczek, Anna Jusza, and Ryszard Piramidowicz. "Thermal, Spectroscopy and Luminescent Characterization of Hybrid PMMA/Lanthanide Complex Materials." Materials 14, no. 12 (June 8, 2021): 3156. http://dx.doi.org/10.3390/ma14123156.

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Novel hybrid materials based on the poly(methyl methacrylate) (PMMA) matrix and lanthanide(III) carboxylates Eu:2,6-DClB and Tb:2,6-DClB were synthesized and carefully analyzed in the context of their potential application in optically active polymer-based optical fibers. To determine the usefulness of the obtained materials, a careful thermal, mass spectroscopy, and optical characterization was performed, focusing on the features critical for the technology of optical fiber processing. In addition, the luminescent features of both lanthanide complexes and the resulting hybrid composites were carefully investigated to identify the processes responsible for light emission and to analyze the influence of the PMMA host on light emission intensity and spectral characteristics. The obtained results showed that both lanthanide carboxylate complexes exhibited intense luminescence in the red and green spectral range, typical of europium and terbium dopants, and that those features were well preserved after introducing them into the PMMA polymer. Thermal analysis also proved that introducing the luminescent additives did not significantly affect the thermal properties of both hybrid materials, thus enabling further processing into the form of optical fibers.

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39

Boschetto, Alberto, Luana Bottini, Luciano Macera, and Francesco Veniali. "Post-Processing of Complex SLM Parts by Barrel Finishing." Applied Sciences 10, no. 4 (February 19, 2020): 1382. http://dx.doi.org/10.3390/app10041382.

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Selective laser melting (SLM) enables the production of metal complex shapes that are difficult or impossible to obtain with conventional production processes. However, the attainable surface quality is insufficient for most applications; thus, a secondary finishing is frequently required. Barrel finishing is an interesting candidate but is often applied without consistent criteria aimed at finding processing parameters. This work presents a methodology based on Bagnold number evaluation and bed behavior diagram, developed on experimental apparatus with different charges and process parameters. The experimentation on an industrial machine and the profilometric analysis allowed the identification of appropriate process parameters and charge media for finishing the investigated materials (Ti6Al4V and Inconel718). Two case studies, characterized by complex shapes, were considered, and consistent surface measures allowed understanding the capability of the technology.

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40

Nikolaev, I. V., S. S. Kirov, I. B. Vorob’ev, V. I. Zakharova, B. A. Bogatyrev, and L. O. Magazina. "Applicability of hydrogarnet technology for complex processing of Indian condalites." Russian Journal of Non-Ferrous Metals 52, no. 2 (April 2011): 150–56. http://dx.doi.org/10.3103/s106782121102009x.

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Golubchik, Eduard, Marina Polyakova, and Alexandr Gulin. "Adaptive Approach to Quality Management in Combined Methods of Materials Processing." Applied Mechanics and Materials 656 (October 2014): 497–506. http://dx.doi.org/10.4028/www.scientific.net/amm.656.497.

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One of the requirements of the modern materials market is the stable balance between the manufacturer and customer interests. However in order to improve the competitive edge the manufacturer should be able to adapt well to the changing market conditions. This feature is especially important when the manufacturer only starts producing the products with improved consumer properties. The article is concerned with the concept of real-time technological adjustment of quality ratings to external impact and the development of the new combined method of carbon wire plastic deformation resulting in improving its mechanical properties is given as an example. The proposed concept is based on the principle of complex technological systems generation on the basis of precedent selection as well as on the application of vertical and horizontal adaptation. The authors show the results of complex theoretical and experimental investigation of various technological operations influence of the developed method on formation of the wire mechanical characteristics.

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42

Liu, Guoqian, Changhai Yan, and Hua Jin. "Colloidal Processing of Complex-Shaped ZrB2-Based Ultra-High-Temperature Ceramics: Progress and Prospects." Materials 15, no. 8 (April 14, 2022): 2886. http://dx.doi.org/10.3390/ma15082886.

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Ultra-high-temperature ceramics (UHTCs), such as ZrB2-based ceramics, are the most promising candidates for ultra-high-temperature applications. Due to their strong covalent bonding and low self-diffusion, ZrB2-based UHTCs are always hot-pressed at temperatures above 1800 °C. However, the hot-pressing technique typically produces disks or cylindrical objects limiting to relatively simple geometrical and moderate sizes. Fabrication of complex-shaped ZrB2-based UHTC components requires colloidal techniques. This study reviews the suspension dispersion and colloidal processing of ZrB2-based UHTCs. The most important issues during the colloidal processing of ZrB2-based UHTCs are summarized, and an evaluation of colloidal processing methods of the ZrB2-based UHTCs is provided. Gel-casting, a net or near-net colloidal processing technique, is believed to exhibit a great potential for the large-scale industrialization of ZrB2-based UHTCs. In addition, additive manufacturing, also known as 3D printing, which has been drawing great attention recently, has a great potential in the manufacturing of ZrB2-based UHTC components in the future.

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43

Sunkara, Mahendra Kumar. "Plasma-molten Metal and/or Liquid Interactions for Materials/Chemical Processing." ECS Meeting Abstracts MA2020-01, no. 17 (May 1, 2020): 1106. http://dx.doi.org/10.1149/ma2020-01171106mtgabs.

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Several grand challenges in energy storage and conversion need the discovery of functional materials that many agree will be composed of complex compositions at nanoscale. In this regard, plasma based materials processing has been shown to be promising for combinatorial techniques and scalable processing. The use of plasma oxidation of liquid precursors allows for creation of metastable complex oxide particles with compositional control.1 A number of examples will be discussed in which the above two techniques are currently being used for accelerating the development of a variety of catalysts including electrocatalysts and materials for storage applications. This talk will highlight our efforts to understand the role of plasmas under two categories: (a) the synergistic effects hydrogen and nitrogen plasma interactions with molten metals;2 and (b) the oxygen plasma-liquid droplet interactions.3 To gain insights into these mechanisms we have studied the interaction of hydrogen and nitrogen plasmas with low melting point metals, primarily with gallium. Absorption/desorption experiments as well as theoretical-computational calculations were performed. Experiments have shown an increment of adsorbed gaseous species into the molten metal in the presence of plasmas. In the case of oxygen plasma-liquid droplet interactions for creating complex oxides, the role of solvated electrons, oxygen radicals and heating effects will be discussed. Finally, the use of plasmas for achieving liquid phase epitaxial growth of GaN and related materials will be discussed.4 Author acknowledge primary funding support from NSF Solar Project (DMS 1125909), and NSF EPSCoR (1355438). References 1. P. Ajayi, S. Kumari, D. Jaramillo-Cabanzo, J. Spurgeon, J. Jasinski and M.K. Sunkara, “A rapid and scalable method for making mixed metal oxide alloys for enabling accelerated materials discovery”, J. of Materials Research, 31 (11), 1596-1607(2016) 2. L. Carreon, D.F. Jaramillo-Cabanzo, I. Chaudhuri, M. Menon and M.K. Sunkara, “Synergistic interactions of H2 and N2 with molten gallium in the presence of plasma”, Journal of Vacuum Science and Technology A, 36, 021303 (2018). 3. P. Ajayi, M. Z. Akram, W. H. Paxton, J. B. Jasinski and M. K. Sunkara, “Nucleation and Growth Mechanisms During Complex Oxide Formation Using Plasma Oxidation of Liquid Precursors”, Submitted (2019) 4. Jaramillo, J. Jasinski and M. Sunkara, “Liquid Phase Epitaxial Growth of Gallium Nitride”, Crystal Growth and Design, 19, 11, 6577-6585(2019)

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Kadykova, Y. A., P. A. Bredikhin, S. V. Arzamastsev, and S. G. Kalganova. "Complex-modified basalt plastics." Proceedings of the Voronezh State University of Engineering Technologies 80, no. 2 (October 2, 2018): 297–301. http://dx.doi.org/10.20914/2310-1202-2018-2-297-301.

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In view of the fact that the creation and development of the production of new polymers practically does not occur, the modification of known materials, the creation of polymer composites filled with various substances is today one of the priority directions in the creation of new polymeric materials. In this paper, the possibility of increasing the reactivity by processing corona discharge of large-capacity polymer-polyethylene when filled with modified basalt. The method of full factorial experiment, regression equations, analysis of which showed a prevailing influence of DC corona discharge on the physico-mechanical characteristics of polymeric composite materials. The optimal ratio of the components of the composite material and the current during the processing of polyethylene corona discharge were chosen by gradient method. The prospects and expediency of obtaining complex-modified basalt plastics on the basis of low-pressure polyethylene treated with corona discharge are proved, since all physical, chemical and mechanical properties of polyethylene composites are increased. The method of infrared spectroscopy shows that in a complex-modified basalt plastic there are practically no groups of hydroxyl groups, the intensity of peaks of methylol groups and peaks –Si-O-Si-is significantly reduced, which indicates the chemical interaction of polyethylene treated with corona discharge and modified basalt.

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Flemings, Merton C., Klavs F. Jensen, and Andreas Mortensen. "Proposal for a Generic Materials Processing Course." MRS Bulletin 15, no. 8 (August 1990): 35–36. http://dx.doi.org/10.1557/s0883769400058929.

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In the early 1950s when “materials science” was beginning to take shape in the minds of educators in materials departments, discussions were heated on the subject of how (and whether) intellectually rich courses could be developed with such broad coverage. It was argued by many that materials are too complex and vary too greatly from one another in their properties and in their applications to be treated in a single course. These individuals argued that if “materials” was to be taught, then it would have to be in courses or segments of courses broken down by materials classes-metals, ceramic, polymers, semiconductors.A full generation of faculty has passed through our ranks since those days, and the arguments regarding teaching of at least the beginning materials science subjects are now muted and perhaps moot. Few materials departments begin today with a materials-specific subject (e.g., metallurgy, ceramics) for either their own students or as a service subject for other engineering departments. Most begin with a subject in materials science or materials science and engineering that deals generically with all materials for at least a major portion of the subject. Examples are drawn from individual materials classes, and emphasis may shift to individual materials classes as the subject progresses.The key to development of these subjects, and the intellectual foundation on which they rest, is structure and structure-property relations. We can understand, and teach, how the building blocks of materials (atoms, molecules, grains, amorphous phases, etc.) fit together to build macroscopic structures.

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Nair, Rakesh B., H. S. Arora, Priya Mandal, and H. S. Grewal. "Complex concentrated coatings: Effect of processing route on microstructural and mechanical properties." Materials Letters 230 (November 2018): 100–104. http://dx.doi.org/10.1016/j.matlet.2018.07.088.

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Peng, Jihua, Yong Mao, Shiqiong Li, and Xunfang Sun. "Microstructure controlling by heat treatment and complex processing for Ti2AlNb based alloys." Materials Science and Engineering: A 299, no. 1-2 (February 2001): 75–80. http://dx.doi.org/10.1016/s0921-5093(00)01417-9.

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Hata, Seiichi. "Special Issue on Micro-Nano Materials and Processing." International Journal of Automation Technology 9, no. 6 (November 5, 2015): 611. http://dx.doi.org/10.20965/ijat.2015.p0611.

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Industrial production processes are becoming more difficult and complex because of the need to accept or react to global requirements for ecology, energy saving, downsizing, short lead times, information technology, etc. Metrology and inspection play very important roles in production processes because these must decide the final quality of manufactured industrial goods. Laser/optical metrology is widely used in industry to maintain meter definition traceability because it is, in principle, nondestructive. This makes laser metrology a candidate for use in final industrial inspection. This special issue originated in Laser Metrology for Precision Measurement and Inspection in Industry 2014 (LMPMI2014), also the 11th IMEKO symposium. LMPMI2014 covers a very wide area, including precision engineering, dimensional measurement, shape measurement, micro/meso/nano metrology, interferometry, and standards and calibration technology. This IJAT special issuefeatures papers selected from LMPMI2014. Advanced papers in this issue present the latest achievements in laser metrology ranging from basic research to actual industrial application. These papers should prove useful to readers seeking to share their industrial R&D knowledge and experience. The important contributions of the authors and reviewers are most deeply appreciated and make this issue both fascinating and its ideas far-reaching.

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Antusch, Steffen, Jan Hoffmann, Alexander Klein, James P. Gunn, Michael Rieth, and Tobias Weingaertner. "Processing of complex near-net-shaped tungsten parts by PIM." Nuclear Materials and Energy 16 (August 2018): 71–75. http://dx.doi.org/10.1016/j.nme.2018.05.023.

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Steinberg, Christian, Marc Papenheim, Si Wang, and Hella-Christin Scheer. "Complex 3D structures via hybrid processing of SU-8." Microelectronic Engineering 155 (April 2016): 14–18. http://dx.doi.org/10.1016/j.mee.2016.01.036.

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