Engineering Commons^™

Processing Manipulation Of Carbon Content In Cu-34.6%Mn, Samuel Inman

The Journal of Purdue Undergraduate Research

No abstract provided.

Micrometeoroid Impacts On Periodic Spacecraft Structures, Victoria West, Luis Buades, Hanson-Lee Harjono

The Journal of Purdue Undergraduate Research

No abstract provided.

Catalyst-Assisted Transformation Of Shale Gas To Transportation Fuels: Performance Of A Single-Site Cobalt Catalyst In Dehydrogenation And Oligomerization Processes, Ethan Edwards

The Journal of Purdue Undergraduate Research

No abstract provided.

Origins Of Space Food From Mercury To Apollo, Celine Chang

The Journal of Purdue Undergraduate Research

No abstract provided.

Drones On The Rise: Societal Misperceptions Of Small Unmanned Aircraft Systems, Renee Keilman

The Journal of Purdue Undergraduate Research

Throughout the past decade, small unmanned aircraft systems (sUAS) have been on the rise in both the civilian and military sectors. It is forecasted that in the near future they will create thousands of jobs and billions in tax revenue due to their ability to execute difficult and hazardous tasks safely, efficiently, and cost-effectively. However, one current issue with the proliferation of the technology is a shortage of skilled employees due to a lack of education and common negative public misperceptions associated with them.

To investigate this, responses from a mixed-methods survey will be analyzed. Within the survey, questions such …

Stability Of Slopes Of Embankments Of Railway Access Road To Jsc "Shargunkumir", U.E. Ergashev, N.I. Begmatov, F.F. Eshonov

Journal of Tashkent Institute of Railway Engineers

The article deals with the stability of the embankment slope. The scheme for the calculation and the results of the calculation of the stability of the embankment slope are presented. Based on the calculation results, transverse embankment profiles with a height of more than 12 m are designed and recommended for use

Modeling Of Theflow Regimes Of Water-Coal Fuel Slurries With Complex Reology In Cylindrical Pipes, Ja.D. Hodzhaev, Sh.A. Kasymov

Journal of Tashkent Institute of Railway Engineers

The article deals the flow regimes with regard to the complex flow rheology of highly concentrated water-coal fuel slurries (WCS). It has been established that during the WCS flow through cylindrical pipes the flow mode is disturbed, which is due to the mutual influence of the geometric dimensions and flow parameters of the suspension when it is burned in the combustion chambers of power plants

Technology Of Strengthening Of Embankment Of Railways Of Sandy Soils With Application Of Geosynthetic Materials, K.S. Lesov

Journal of Tashkent Institute of Railway Engineers

This article reduced the technology of strengthening the embankment of the railway roadbed from sandy soils with the use of geosynthetic materials. Constructive and technological solutions execution of work are given

Some Aspects Of Evaluating Economic Efficiency During Thermal Renewal Of External Walls Of Civil Buildings, S.S. Shaumarov, S.I. Kandakhorov

Journal of Tashkent Institute of Railway Engineers

This article presents the results of calculations to determine the payback period for the installation of additional insulation of the outer walls of civil buildings, taking into account the increase in tariffs for thermal energy. From a practical point of view, this calculation allows us to evaluate the economic efficiency of the thermal renewal of the outer walls of civil buildings

On The Formation Of The Variational Equation Of Motion And Boundary Value Problems Of Thin-Walled Axisymmetric Shell Structures, A. Abdusattarov, F.E. Abduqodirov, N.H. Sabirov

Journal of Tashkent Institute of Railway Engineers

The article deals, on the basis of the Hamilton-Ostrogradsky variational principle, a system of differential equations of motion of axisymmetric shell structures with the corresponding boundary and initial conditions is derived. The boundary problem for cylindrical and spherical shell structures is formulated

Calculation Of The Wagon Motion Velocation On The Whole Protection Of The Profile Of The Way With Different Clothes Of The Sorting Hill, Kh.Kh. Djalilov

Journal of Tashkent Institute of Railway Engineers

In this article has been calculated the velocity of the wagon’s movement in various sites of a hump yard, based on the formula led on the basis of the theorem of changing of kinetic energy for not free material point in a final form. Results of the calculations are noticed that on the intermediate site of a hump yard to a dividing arrow the relative error of calculation is equal to 10.3%, on the site of an arrow zone of a hump yard of the second dividing arrow - δv6с2 ≈ 9.0%, on the site of the first sorting way …

To The Question Of Producing Efficient Construction Materials Based On Waste Of Agricultural Crops, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, A.T. Ilyasov

Journal of Tashkent Institute of Railway Engineers

One of the promising areas of agricultural waste use is its use as raw material for the pro-duction of efficient building materials for energy-saving technologies, which is especially im-portant for areas that have a waste of agriculture and are in short supply in easily accessible building materials. On the other hand, an important task of technical policy is now to increase the use of lightweight structures in order to reduce the mass of erected structures, reduce the cost of transport costs and the cost of installing structures. In this regard, the use of dry cotton stems (guzapai) in a specially …

On The Construction Of Canonical Systems Of Equations For Cylindrical And Spherical Shell Structures, A. Abdusattarov, F.E. Abduqodirov

Journal of Tashkent Institute of Railway Engineers

In this article is given the construction of canonical systems, the equation of motion for axisymmetric shell structures, as well as for cylindrical and spherical shells

Research Of Surface Condition Of The Rails Rolling On Sections Of High-Speed And High-Speed Train Traffic, E.B. Abdualiyev

Journal of Tashkent Institute of Railway Engineers

In this article, the analysis of intensity of the pulse roughness’s arising on a surface of rolling of heads of rails on a site of high-speed movement of trains is carried out.

Method Of Activation Of Cement Mixture Components By Ultrasonic Field, U.A. Yokubov, O.V. Trunilina, V.N. Avdievich, S.Z. Mirzaev, S.E. Kurbanbaev

Journal of Tashkent Institute of Railway Engineers

The theoretical and experimental methods of increasing the efficiency of cement disperse systems by the action of a low-energy ultrasonic field are given in the article, as well as a technique providing highly efficient treatment of mixing water with a minimum energy expenditure

The Movement Of Trains As A Source Of Seismic Waves Impact On The Upper Structure Of The Track And The Roadbed Of Railways, A.H. Abdujabarov, P. A. Begmatov, M. Mehmonov

Journal of Tashkent Institute of Railway Engineers

On the basis of theoretical and experimental scientific research, the substantiation of the similarity of the impact of seismic forces and the movement of rolling stock on the engineering structures of Railways is obtained.

About Movements Of The Carriage On The Profile Hump In A Gravity Yard, Sh.B. Djabbarov

Journal of Tashkent Institute of Railway Engineers

The article noted that in the existing methods of calculation of hump in a gravity yards the speed of the car at the braking position is determined by the formula speed of free fall of bodies given the inertia in the rotating parts of the car. Thus assume that in areas of deceleration occur rotation of the wheels of the car, that is incorrect. In it mathematical expressions and examples of calculations proved that the high-speed sections slides occur the rolling of the wheels of wheel pairs without slipping.

On The Application Of Information Technology For The Development Of Software For Automation The Modeling Process Of Wagons At Wagon Enterprises Jsc "O'Zbekiston Temir Yo'llari", V.P. Bubnov, Sh. Kh. Sultonov

Journal of Tashkent Institute of Railway Engineers

The report presents a functional diagram of the developed software for calculating the values of loads acting on the wagon body. The stages of development and the main modules of a software product that implements mathematical calculations are defined. The issues of the software implementation of the presented algorithms using the object-oriented programming language C # are discussed. The performed engineering analysis using the values of loads obtained using the developed software is given. The developed program in C # language with the use of the integrated Visual Studio environment allows to increase the accuracy and reduce the time for …

Features Of Thermal Processing Of Instrumental Alloyed Steels, F.R. Norkhudjayev, A.A. Mukhamedov, D.M. Ergashev

Journal of Tashkent Institute of Railway Engineers

In work, the most preferred heat treatment scheme has been determined on the basis of the analysis of various heat treatment schemes for alloyed tool steels, which the excludes the possibility of restoring the original grain structure and retains the possibility of studying the increased material defectiveness acquired during primary hardening.

Mathematical Models Of Magnetic Chains Of Electron Electromagnetic Modifiers With Fluid Meter Measuring Fluid Surface, S.F. Amirov, A.O. Ataullaev, S.H. Jumabaev

Journal of Tashkent Institute of Railway Engineers

Mathematical models of magnetic circuits of electromagnetic flow transducers with an annular channel have been developed, taking into account the distribution of the parameters of the magnetic circuit and leakage fluxes closed through non-working air gaps. The possibility of compensating for the difference in magnetic resistance of coaxially arranged concentric ferromagnetic cores due to the difference in their circumference by selecting the thickness of the cores is shown.

The Method Of Pulse Demagnetization Of Rail Lash Products, J.F. Kurbanov

Journal of Tashkent Institute of Railway Engineers

This article discusses methods for eliminating impulse noise affecting the operation of a complex locomotive safety device – unified (CLSD-U). The calculation and recommendations for the modernization of the core of the receiving coils of locomotives. The optimal parameters of induction in track circuits for the normal functioning of the CLSD-U device are determined. Demagnetization devices have been developed, both stationary and mobile, on trolleys at a speed of 5km/h and on the platform at a speed of 80km/h.

To The Movement Of The Car On The Site Of The First Brake Hump Yard Of Positions, Sh.U. Saidivaliyev

Journal of Tashkent Institute of Railway Engineers

In the article using the analytical formulas derived from the application of the basic law of dynamics for non-ideal connections (Dalembert principle), the kinematic parameters of the car’s motion (acceleration, time, braking path) were calculated in the deceleration zone at the site of the first brake position of the hump yard

Technique For Determining The Capacity Of A Container Terminal Equipped By Rubber Tyred Gantry, Sh.R. Abduvahitov

Journal of Tashkent Institute of Railway Engineers

This article presents the advantages and disadvantages, as well as the technical characteristics of the rubber tyred gantry. He conducted a brief scientific analysis in the field of research of technical equipment of container terminals. A mathematical model of the parameters of relations of the crane, container and cargo terminal is proposed.

Boolean Complement Method For Combinational Circuits Testing Using Binary Separable Codes, A.H. Efanov

Journal of Tashkent Institute of Railway Engineers

The concurrent error-detection systems basic structural diagrams based on the check bits calculation and on the logical addition basis are described. A hybrid block diagram is presented in which the part of the diagnostics object outputs is transformed. The conditions for the use of binary separable codes for their use in the concurrent error-detection systems organization according to the method of logical addition are established.

The Study Of Magnetic Circuits With Distributed Magnetizing Windings, S.F. Amirov, K.K. Jurayeva, O.T. Boltayev

Journal of Tashkent Institute of Railway Engineers

By research of magnetic chains of new magnetoelastic sensors of efforts with the distributed magnetizing windings by method of drawing up the equivalent circuit it is shown that at rather large number of the cascade connected sites of a magnetic chain and accounting of distribution of the magnetizing forces of sections of a winding of excitement decrease in an error of calculation of magnetic chains with the distributed parameters is reached essential (to 23%). It is established that magnetic tension along a magnetic chain is distributed not linearly and changes the sign in a point of a magnetic neutral, and …

Rationing Of Departure Time Of Freight Cars From Stations And Optimization Of Delivery Periods, J.R. Qobulov, J.S. Barotov

Journal of Tashkent Institute of Railway Engineers

In this article to connect the wagons loaded to the trains shortening the staying time in process of their collection and recycling delivers freight wagons accelerates the selection and use of shunting equipment, sends wagons to the station at the right time. Is listed below in railway transport on delivery freight wagons, international and local wagons staying time the main quality indicators in station. As well as developed scheme of the algorithm for the timing of staying in the wagons at the station.

Developing Of Microelectronic Block Нсс, A.R. Аzizov, E.K. Аmetova

Journal of Tashkent Institute of Railway Engineers

The issue of developing a microelectronic control block of paired arrows the HCC is discussed in the article. The analysis of the block circuit concept is carried out and it is determined which elements are to be replaced and on which microelectronic devices. Electric circuits are considered that provide automatic recruitment of a train route that contains four circuits. The analysis of the block operation in the circuit of push-button relays, which receive power from the block НСС, was carried out, the calculation of the assumed current strength showed the need to use an optical-relay type Pvg-612 in this circuit.

Solving The Problem Of Capacity Of Single-Track Railway Section T-A Located Along The Line Of The Transport Corridor “China-Kyrgyzstan-Uzbekistan”, S.K. Hudajberganov, G.Sh. Ikramov, Sh.Sh. Kajumov

Journal of Tashkent Institute of Railway Engineers

The main problem of single track railway lines is that the existing capacity does not satisfy the need, resulting in the need to apply a number of measures. This is exactly the problem that exists in the considered junction T-A, which in the future will be a link in the “China-Kyrgyzstan-Uzbekistan” transport corridor. The article provides possible solutions to this problem. The adoption of the optimal solution in the future will solve not only the problem of through put, but also help to improve the qualitative and quantitative indicators of this site.

Development Of Classification Of The Reasons Of Losses In The Work Sorting Stations, Sh.M. Suyunbayev, D.B. Butunov

Journal of Tashkent Institute of Railway Engineers

In this article to connect the wagons loaded to the trains shortening the staying time in process of their collection and recycling delivers freight wagons accelerates the selection and use of shunting equipment, sends wagons to the station at the right time. Is listed below in railway transport on delivery freight wagons, international and local wagons staying time the main quality indicators in station. As well as developed scheme of the algorithm for the timing of staying in the wagons at the station.

Analysis Of Video Monitoring Of Results Of Labor Activities Of Train Dispatcher (As A Traffic Dispatcher Of The Single Dispatch Center Of The Joint-Stock Company "Uzbekistan Temir Yollari".), S. Sulaymanov, Kh.M. Kamilov

Journal of Tashkent Institute of Railway Engineers

The article presents the results of processing and analysis of video data of the timing of the work shift of train dispatchers of the Single Dispatch Center of JSC "Uzbekistan Temir Yollari". A diagram of the distribution of work shift time in three characteristic poses is constructed. Train dispatchers 57% of the shift time when doing work are in a sitting pose, 21% in a sitting-standing pose, 9% are in a standing pose and 13% for other work on demand. Based on the results of the video timing, taking into account the anthropometric parameters of a person, the dimensions of …