SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019最新文献

{"title":"Modeling and investigation of physical machining processes","authors":"S. Vasiliev, Y. I. Shulyak","doi":"10.1063/1.5140145","DOIUrl":"https://doi.org/10.1063/1.5140145","url":null,"abstract":"Modern approaches in metalworking differ high productivity during manufacture complex details from different steels and alloys with different parameters of hardness and strength. High manufactured metalworking is realised on modern metal-cutting machines and machining centers. An important problem of treatment is the optimum choice of mechanical machining technological parameters, which includes cutting mode, metal - cutting tool construction, monitoring and measurement means. Taking into consideration economic feasibility in the condition of real production during processing of new materials it is important to choose the cutting tool and treatment modes correctly. The choice of optimum variants is achieved after analysis of experimental data of the physical processes of mechanical treatment, which include temperature and cutting forces, vibration diagnostics, energy costs, wear of the cutting tool. Based on the measurement results of the physical parameters of the cutting zone, a physical model is created, together describing quantitative parameters of mechanical treatment process. The physical parameters measurements of mechanical treatment zone are realized in the real time mode with usage of appropriate primary information sensors associated with the National Instruments LabVIEW software package. The complex is an international standard in the system for physical processes measurement and modeling. The paper presents methods for studying and modeling the physical processes of mechanical treatment at the stage of choosing the optimal solutions for the parameters of mechanical treatment during training of specialists in the field of designing of machining and tooling complexes in mechanical engineering.Modern approaches in metalworking differ high productivity during manufacture complex details from different steels and alloys with different parameters of hardness and strength. High manufactured metalworking is realised on modern metal-cutting machines and machining centers. An important problem of treatment is the optimum choice of mechanical machining technological parameters, which includes cutting mode, metal - cutting tool construction, monitoring and measurement means. Taking into consideration economic feasibility in the condition of real production during processing of new materials it is important to choose the cutting tool and treatment modes correctly. The choice of optimum variants is achieved after analysis of experimental data of the physical processes of mechanical treatment, which include temperature and cutting forces, vibration diagnostics, energy costs, wear of the cutting tool. Based on the measurement results of the physical parameters of the cutting zone, a physical model is create...","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126559971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Technological description of meat products ultrasound shock freezing and mathematical modeling of the experimental object","authors":"P. Vasilieva","doi":"10.1063/1.5140130","DOIUrl":"https://doi.org/10.1063/1.5140130","url":null,"abstract":"The article deals with the technology of shock freezing with the use of acoustic systems. Criteria of comparison of quality of the frozen meat production are considered. This theoretical basis of operation of the plant with the effect of ultrasonic cavitation. A comparison of the phase transition in a classical refrigeration machines and installations with sound system. A mathematical model of a small refrigerating machine is presented. Recommendations on the organization of the technological process of shock freezing with the use of the cavitation effect are given.The article deals with the technology of shock freezing with the use of acoustic systems. Criteria of comparison of quality of the frozen meat production are considered. This theoretical basis of operation of the plant with the effect of ultrasonic cavitation. A comparison of the phase transition in a classical refrigeration machines and installations with sound system. A mathematical model of a small refrigerating machine is presented. Recommendations on the organization of the technological process of shock freezing with the use of the cavitation effect are given.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127912306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Building an information security of a distributed measuring system based on a multilevel approach","authors":"S. Vorobyev","doi":"10.1063/1.5138443","DOIUrl":"https://doi.org/10.1063/1.5138443","url":null,"abstract":"The article describes a mathematical model of integrated construction of the optimal structure of information security of a distributed measuring system based on the approach of multilevel topology. The use of the paradigm of cloud, fog and edge computing allows building a modern network infrastructure in the framework of the concept of industrial IoT. It is proposed to use the approach based on the genetic algorithm to solve the problem.The article describes a mathematical model of integrated construction of the optimal structure of information security of a distributed measuring system based on the approach of multilevel topology. The use of the paradigm of cloud, fog and edge computing allows building a modern network infrastructure in the framework of the concept of industrial IoT. It is proposed to use the approach based on the genetic algorithm to solve the problem.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121790881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Velocity profile development and friction in compressible micro-flows","authors":"M. Cavazzuti, M. Corticelli, T. Karayiannis","doi":"10.1063/1.5138775","DOIUrl":"https://doi.org/10.1063/1.5138775","url":null,"abstract":"From Poiseuille theory, it is known that incompressible laminar fully-developed flow of a Newtonian fluid in a constant cross-section channel is characterised by steady parabolic velocity profiles after a fully-developed flow condition is attained. In turbulent fully-developed flow the velocity profiles are non-parabolic and become more flat for higher Reynolds numbers. When the incompressible hypothesis does not hold, as in the case of high velocity ideal gas flow, the velocity profile becomes flatter, as if more turbulent, due to the superposition of compressibility and turbulence effects, if applicable. This is typical in micro-channel flows, where pressure gradients are high and the gas is rapidly accelerating, eventually up to the sound velocity. As the flow accelerates the effects of compressibility grow stronger and the velocity profile keeps changing shape. The radial velocity component does not zero as in fully-developed flow but reverses after the entrance effects have damped out and grows with the Mach number. A net mass transfer toward the walls is thus generated making the velocity profile more flat. This affects the friction factor which is no longer constant, being proportional to the normal-to-wall velocity gradient, and needs to be evaluated. In the present work, the compressible friction factor is numerically investigated and correlations are proposed based on the velocity profile shape evolution as a function of the Mach number. This, together with other considerations on the velocity profile shape change, is shown to enhance the predictive capability of the Fanno theory for compressible flows.From Poiseuille theory, it is known that incompressible laminar fully-developed flow of a Newtonian fluid in a constant cross-section channel is characterised by steady parabolic velocity profiles after a fully-developed flow condition is attained. In turbulent fully-developed flow the velocity profiles are non-parabolic and become more flat for higher Reynolds numbers. When the incompressible hypothesis does not hold, as in the case of high velocity ideal gas flow, the velocity profile becomes flatter, as if more turbulent, due to the superposition of compressibility and turbulence effects, if applicable. This is typical in micro-channel flows, where pressure gradients are high and the gas is rapidly accelerating, eventually up to the sound velocity. As the flow accelerates the effects of compressibility grow stronger and the velocity profile keeps changing shape. The radial velocity component does not zero as in fully-developed flow but reverses after the entrance effects have damped out and grows with ...","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radial turbine preliminary design and performance prediction","authors":"Angelo Leto","doi":"10.1063/1.5138830","DOIUrl":"https://doi.org/10.1063/1.5138830","url":null,"abstract":"This work will present a model for the preliminary optimized design of a radial turbine and an analysis of the most relevant loss models for efficiency prediction.A one-dimensional code, Radial Turbine Global Design, was developed in MATLAB environment. The model developed has the objective to estimate the efficiency and optimization of the parameters related to it, and losses prediction.The flow that through a turbine is complex and many mechanisms of the flow losses in turbine, have not be known well. The computational fluid dynamics CFD simulations is based on complex three-dimensional viscous methods, which require considerable iterations and, therefore time, in order to obtain an improvement of the geometry, through the convergence to an acceptable solution often not optimal. While, can be used of one-dimensional models able to predict the global design of the machine based on the combination of empirical and experimental loss models, able to provide a good performance estimate with reduced times. In this work, the loss models are analyzed and developed to obtain useful thermodynamic and geometrical information, necessary for an optimization CFD simulation.The RTGD has proven useful for the geometric design three-dimensional of the rotor blades and was tested by considering literature data of real radial turbines that use both Aria and Argon as working fluid, in addition it was compared with the NASA code RIFTUD.The code has excellent reliability because the results obtained reproduce the turbine geometry with a low error compared to the literatures case.Furthermore, RTGD can predict turbine performance through two approaches, the first considering the turbine geometry and the second considering the enthalpy drop due to losses. The second approach for estimating efficiency is necessary in order to confirm the one calculated with the first approach, and therefore the good geometric design of the turbine.The code, after being validated, was used for the radial turbines design for space applications for expander cycle rocket engines which require a high efficiency and a low expansion ratio.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131225886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the processes of missile preparation at launch complexes on the basis of system design of interacting elements","authors":"O. Matveeva, A. Romanyak, I. Udovik","doi":"10.1063/1.5140167","DOIUrl":"https://doi.org/10.1063/1.5140167","url":null,"abstract":"The results of the research presented in the paper are aimed at reducing the duration of preparing to launch Space and Missile System (SMS) at the launch complex (LC) and costs for it. This is achieved by thermostating the spacehead (SH) with the coolant supplied from the ground-based temperature control system (TCS) to the heat shield (HS) through the cavity between its walls and eliminating the removable heat insulation for the SH even under extreme environmental conditions. The justification of this option required the application of a systematic approach, in which the parameters of two functionally interacting SMS elements - TCS and SH were considered. In the framework of this approach, it is proposed to refine the HS, in which the coolant (gas) does not pass through volumes with a payload (PL) and an upper-stage rocket (USR), as is currently accepted, but through the HS cavities between its two walls. This will significantly reduce the requirements for gas purity, reduce restrictions on its flow rate (or speed), increase the safety of simultaneous thermostating of PL and USR, as well as provide pressure boosting of volumes from PL and USR due to high-speed pressure. To substantiate the proposal, a numerical simulation of the stress-strain state of the HS structure with a cavity was carried out, a numerical simulation of thermal processes taking place in the HS during the gas flow in the cavity between its walls during thermostating in a wide range of mean gas velocities between the HS walls was carried out. Based on the results obtained, a positive conclusion about the prospects for the application of the proposed circuit-constructive solution of HS and the option of supplying the coolant to the SH during thermostating is made.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132588757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental investigation on a diesel engine operated in RCCI combustion mode","authors":"F. Legrottaglie, E. Mattarelli, C. Rinaldini, T. Savioli, F. Scrignoli","doi":"10.1063/1.5138829","DOIUrl":"https://doi.org/10.1063/1.5138829","url":null,"abstract":"Low Temperature Combustion (LTC) concepts have been investigated in many recent studies, aiming to improve engine efficiency and minimize pollutant emissions. One of the most promising techniques is represented by the Reactivity Controlled Compression Ignition (RCCI), that can be obtained combining a low reactivity fuel (such as gasoline, natural gas, ethanol, etc) and a high reactivity fuel (such as Diesel oil). The former is injected in the intake manifold, and it generates a homogeneous mixture before the start of combustion; the latter is injected directly into the combustion chamber. This technology can be easily applied to existent Diesel engines, implementing a low pressure injection system for the low-reactivity fuel. This work presents the most important results of a preliminary experimental study, conducted on a light duty Diesel engine, modified in order to operate in RCCI combustion mode. In particular, four gasoline injectors have been installed between the intercooler and the intake plenum, while the injection strategy of both fuels has been optimized, along with boost pressure. Experiments show that at low loads it is possible to substitute most of Diesel fuel with gasoline, maintaining or even improving brake thermal efficiency. This result was obtained by optimizing the Diesel fuel injection strategy, without the support of EGR. However, at medium loads, it was not possible to achieve relevant reductions of Diesel fuel, due to the high risk of knocking.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132702065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two methods for numerical solving mathematical physics problems","authors":"E. Shcherbakova, S. Knyazev","doi":"10.1063/1.5138462","DOIUrl":"https://doi.org/10.1063/1.5138462","url":null,"abstract":"The work objective is to perform comparative analysis possibilities of two methods for numerical solution boundary value problems for linear equations of elliptic type - the generalized point-sources method and the direct collocation method. The first proposed method is based on the transformation of the original mathematical physics equation to a simpler inhomogeneous equation with the known fundamental solution. A feature of the second proposed method, the direct collocation method, is the irregular arrangement of the collocation nodes in the problem solving domain, which has made it possible to significantly increase the numerical solution accuracy. Both methods allow one to obtain an approximate solution of boundary value problems for almost any type of linear elliptic equations in analytical form. To confirm the effectiveness of the studied numerical methods, two-dimensional and three-dimensional test boundary value problems with known solutions were solved.The work objective is to perform comparative analysis possibilities of two methods for numerical solution boundary value problems for linear equations of elliptic type - the generalized point-sources method and the direct collocation method. The first proposed method is based on the transformation of the original mathematical physics equation to a simpler inhomogeneous equation with the known fundamental solution. A feature of the second proposed method, the direct collocation method, is the irregular arrangement of the collocation nodes in the problem solving domain, which has made it possible to significantly increase the numerical solution accuracy. Both methods allow one to obtain an approximate solution of boundary value problems for almost any type of linear elliptic equations in analytical form. To confirm the effectiveness of the studied numerical methods, two-dimensional and three-dimensional test boundary value problems with known solutions were solved.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128880978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectroscopic characteristics and energy transfer of bacterial pigment: (pyocyanin/curcumin)","authors":"Ali Kadhim Wadday, Z. Saleh, M. Al-Marjani","doi":"10.1063/1.5141438","DOIUrl":"https://doi.org/10.1063/1.5141438","url":null,"abstract":"In this research used a new strategy in the detection of residues Pseudomonas aeruginosa (Pyocyanin), using the fluorescence spectrum alongside the absorption spectrum of the detection of metabolite in pure water. The bacterial metabolite was successfully measured, by taking the clinically relevant range into account (7-130 µM); at a concentration of [10 µm]. Were measured, the Pyocyanin solutions spectrum consist of three peaks and one shoulder, located at wavelengths (230 nm), (316nm), (370nm), (700 nm), respectively, but the concentration [1µM], its absorption spectrum doesn’t appear clearly and disappears due to dilution, spectra of fluorescence have been measured As in the case of absorption, at optimal wavelength excitation (380 nm), band have appeared at wavelength (443 nm) at all concentrations. To calculate energy transfer, it must be calculated Forster’s radius Ro for FRET between Pyocyanin molecule as a donor was calculated with the Curcumin molecule as an acceptor and its value was Ro = 7.6235 °A, this is the limit lower for Forester’s energy transfer from molar absorptivity of concentration [100 µm] from spectral overlap by used the MatLab program. Then, calculated energy transfer values and the quenching factor, When mixing the Curcumin dissolved in water with Pyocyanin were studied at different concentrations at room temperature at ratio (1/99), (7/93), (11/89). It was found that the increase of energy transfer from the donor to the acceptor with the increasing of the donor maxing rate, the quenching factor is reduced by increasing the presence of the donor and values do depend on concentration. We have achieved great importance in this research by knowing the spectral properties of the respective bacterial dyes. Thus, the data obtained is useful enough to be relied upon as a database for Pyocyanin dye spectra.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131296493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systemic solution for engineering tasks by using formulas in MATLAB","authors":"A. G. Rishnyak","doi":"10.1063/1.5140177","DOIUrl":"https://doi.org/10.1063/1.5140177","url":null,"abstract":"This paper talks about the problems of intellectual computer assistance in engineering. It shows the encapsulation expediency of basic engineering knowledge in object-oriented administrative structures of intelligent CAD. It also presents the advantages of the probabilistic analysis of stochastic system’s behavior using MATLAB. Library of classes and formulas is presented as a part of mathematical support for educational-research CAD, oriented to optimal designing and system analysis of the functionality of high precision flying machines in random complex conditions. The work with distributed knowledge and mathematical solvers help to make a systematic approach, unlike the integrated packages. However, such work requires an appropriate training. That is why, the idea to add specialized intelligent environments in the basis of modern engineering education is proposed.This paper talks about the problems of intellectual computer assistance in engineering. It shows the encapsulation expediency of basic engineering knowledge in object-oriented administrative structures of intelligent CAD. It also presents the advantages of the probabilistic analysis of stochastic system’s behavior using MATLAB. Library of classes and formulas is presented as a part of mathematical support for educational-research CAD, oriented to optimal designing and system analysis of the functionality of high precision flying machines in random complex conditions. The work with distributed knowledge and mathematical solvers help to make a systematic approach, unlike the integrated packages. However, such work requires an appropriate training. That is why, the idea to add specialized intelligent environments in the basis of modern engineering education is proposed.","PeriodicalId":182421,"journal":{"name":"SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133815625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}