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Volume 5 Issue 4

S.No. Title & Authors Page No View
1

Title : Future Home- A Review of Future House or Home with Security and Voice Controller

Authors : Satyendra Singh, Reetek Verma, Prashant Verma

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Home Automation using internet of things is an emerging technology and todays need. This technology offers new and exciting opportunities to increase the connectivity of appliances within the home for automation. Generally, Wi-Fi, Bluetooth, GSM modules or an Android app are used by the existing methods for controlling various home appliances. But the expansion of internet in the last decade, gives one the potential for controlling and automating various appliances through it in a comfortable and secure way. On the other hand, Artificial Intelligence is evolving as a technology for developing automatic systems that can perceive the environment, learn from environment, and can make decision using case based reasoning. The framework for taking real-time decision and automation for IoT is provided by artificial intelligence. AI has vision ability, knowledgebase, learning and decision-making ability, which makes it a better solution for automatic systems. This paper mainly aims to provide the user the facility to control their home appliances using internet and artificial intelligence, which will help them saving the electric power and human energy. The various appliances are connected to the sensor which is connected using Wireless  Networks.

01-04
2

Title : Secondary School Principalship as a Determinant of Quality Education in Selected Government Secondary Schools in Yaounde; Cameroon

Authors : Dr. Genevarius NJI

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This study sets out to assess the effects of school principalship on quality education in the secondary school. Quality in education has become to measuring rod by which educational systems must operate. Within the context of this study quality education is limited to the quality of students’ output which could be determined by the quality of resource management by the school principal. The school principal is in charge of ensuring educational quality at all level and an educational system is not beneficial to the society when it is void of quality. This work is based on the hypothetical premise that principal’s characteristic and resource management influence quality education in secondary schools in Yaounde. The study used data collected from teachers of secondary school and simple random, quota and purposeful sampling techniques were used to obtain a sample size of 543 for teachers of government secondary schools in Yaounde. The quantitative approach was employed in data collection and analysis. In the quantitative approach, we constructed a questionnaire . Data collected was analyzed using the statistical package for social sciences (SPSS); and the following results were obtained in relation to the hypotheses of the study.

  • Principals characteristics are significant predictors of quality education in secondary schools in Yaounde Centre
  • Resources managements is significant predictors of quality education in secondary schools in Yaounde Centre

Both of them (Principals characteristics, Resources managements) account for 62.3 percent of the variations in quality education in the secondary school.

05-10
3

Title : Pedagogic Supervision As a Function of Effective Curriculum Implementation in Some Selected Primary Schools in Yaounde 3

Authors : Dr. Ojong Angela Ojong

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Effective curriculum implementation will only take place if all the necessary things are put in place. Every profession requires continuous improvement in methods and skills that necessary for employee performance. This means that the effective curriculum implementation of teacher is vital for the success of every school. One of the most important reasons for pedagogic supervision is to see to it that each teacher performs the duties assigned to him or her and improve the effectiveness of teachers to enable them contribute their maximum quota to attain the goals of a school. Whenever we come across the term pedagogic supervision in our country our minds goes to inspectors. We know pedagogic supervision is mostly done by inspectors but we should also bear in mind that principals and head teachers are also pedagogic inspectors in their various schools. The teacher’s duty as a curriculum implementer cannot be over emphasized and so this article is on Pedagogic supervision and curriculum implementation.  Our focus in this research will be based on the head teacher and teachers in some primary schools in Yaounde 3. The purpose of this research is to investigate the extent to which pedagogic supervision can lead to effective curriculum implementation. The sample consists of 130 primary school teachers in Yaounde 3 randomly selected from 10 schools. The research instrument used was the questionnaire. The results shows that all the research hypotheses were accepted while the null hypotheses were rejected. Recommendations weremade to pedagogic inspectors and teachers.

11-17
4

Title : CHATBOT using Deep Learning (Seq2Seq Models)

Authors : Gaurav Rajpoot, Arul Srivastava, Dilip Kumar, Monica Sehrawat

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Many conversational agents (CAs) are developed to answer users’ questions in a specialized domain. In everyday use of CAs, user experience may extend beyond satisfying information needs to the enjoyment of conversations with CAs, some of which represent playful interactions. By studying a field deployment of a Human Resource Chabot, we report on users’ interest areas in conversational interactions to inform the development of CAs. Through the lens ofstatistical modeling, we also highlight rich signals in conversational interactions for inferring user satisfaction with the instrumental usage and playful interactions with the agent. These signals can be utilized to develop agents that adapt functionality and interaction styles. By contrasting these signals, we shed light on the varying functions of conversational interactions. We discuss design implications for CAs, and directions for developing adaptive agents based on users’ conversational behaviors.

18-21
5

Title : Analysis of Microstrip Patch Antenna Using Various Feeding Techniques for Bluetooth Applications

Authors : Ankita Mahale, Vijaya Darwada, Dr. S. B. Deosarkar, Ganesh M. Kale

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This article describes the performance evaluation of Rectangular microstrip patch antenna using different feeding techniques such as Coaxial probe feed, Inset feed and Microstrip line feed. Three antennas are designed at frequency 2.44 GHz (Bluetooth). The antenna is designed by using substrate FR-4 which has dielectric constant 4.4, thickness 1.6 mm and loss tangent 0.02. Return loss, VSWR, Smith chart, Bandwidth are simulated and compared all these parameters for different feeding techniques. Simulation is done by using Ansys Electronics HFSS suite 19.2.

22-25
6

Title : Enhancement of Damping Force of Classical Hydraulic Damper into Semi Active Damper using MR Approach

Authors : Mane Shubham S., Abhangrao Chaitanya R., Kothawale Rajdeep R., Mete Akash R., Raut Laukik B.

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Vibration concealment can be considered as a standout amongst the most vital parameter influencing the execution of Mechanical structures and related security and solace. To diminish the framework vibration of such frameworks, a functioning vibration control system is required. the enhancement of damping force of classical hydraulic damper into semi active damper using MR approach is presented in this paper. The three unique liquids with iron particles volume division of 30%, 35 % and 40 % were set up in this investigation. It is seen that with increment in iron particles volume division and higher excitation current, damper execution improves. The damper set with thickest liquid experiences the issue of functionality at most reduced damping current. Among the 1 Degree of opportunity set utilized in this examination, the set with liquid YV2M2 with 35 % iron particles volume portion gives better execution usefulness perspective. The outcomes acquired from Damping power with MR Fluid and Magnetic Field is 40 percent more than Damping Force with customary Hydraulic Fluid.

26-29
7

Title : Analysis of Weld Joint for SS 316 Material Using Taguchi Technique

Authors : Ankita A. Kashid, Pallavi M. Patil, Monika R. Olekar, Priydarshani V. Deshmane, Sonali S. Jadkar

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30-33
8

Title : Improving Accuracy of Manual Crimping Operation through the Automation of Crimping Machine

Authors : Vishal M. Dhumal, Shivam R. Kanade, Samadhan U. Bandagar, Kiran S. Ghule, Kiran V. Chandan, Manoj R. Shewale

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Crimping machine is used in wire harnessing operation for creating a joint between wire and crimping pin with pressing of conductor crimp and insulation crimp. The holding of wire is done by manually without any guiding to the worker . So accuracy of crimping machine is mainly depending upon the skill of worker to hold the wire at accurate position. So for accurate joint, worker plays an important role. Guiding to worker is important so that accuracy will not depend upon worker efficiency and skill. So to achieve the right position to launch pressing die to go for pressing sensor should be at right position. For sensing the accurate position the sensor model which constitute Arduino, color recognition sensor, etc, which help to sense the change in color on insulation of wire. This color change is done by using the marker and sensed in the form of frequency change as marking of different color is done on the wire. This helps Arduino to work as mentioned in program to identify change in color frequency. Then through the LED attached on Arduino signal come to worker as the wire is at accurate position. Then pedal is activated by Arduino to do pressing operation. This will reduce the work done by worker and provide guidance to worker for working in any condition or situation. 

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9

Title : Enhancement of Heat Transfer Coefficient through Forced Convection Apparatus by Using Circular and Elliptical Pipe

Authors : Ashish Shahane, Lakhan Ghodake, Digambar.T. Kashid, D. S. Ghodake

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It is very essential to develop a forced convection system to carry out the analytical and experimental investigation of the heat transfer coefficient with the use of the elliptical and circular pipe. Convection is nothing but the transfer of heat through a fluid which is in bulk fluid motion. Depending on the motion of the fluid, it is classified as natural and forced convection. Buoyancy effect is the natural cause which occurs due to fluid motion in natural convection. On the other hand, in forced convection, the motion of the fluid is caused by external means like a pump or fan. In this system three, 130 Volt heaters are wounded over 800 mm test section of Circular pipe having a 25mm diameter and Elliptical pipe having 22 mm minor and 28 mm major diameter. Variable dimmer stat is used to control input to heater and control valve to control mass flow rate, to determine the average coefficient of heat transfer in turbulent flows inside smooth and straight Circular and Elliptical pipes. The research consists of a regression analysis performed between the Reynolds number and the Prandtl number finally to calculate the heat transfer coefficient of Circular and Elliptical pipes by experimental investigation. After calculating all the results of both the pipes finally we got that efficiency of Elliptical pipe is more than circular pipe also heat transfer coefficient is maximum in the elliptical pipe than the circular pipe and it also led to increasing the heat transfer rates. The deviation of the heat transfer coefficient is maximum as compared to Elliptical pipe.

38-43
10

Title : Experimental Investigation of Natural Fiber with Epoxy Resin

Authors : Laxmikant D. Joshi, Amar A. Rajgole, Rahul Hiremath, Sachin Khomane

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This paper aims study of natural fiber composites bonded with epoxy resin. The natural fibers are used banana and sisal as material for the fabrication of laminating board. The laminated boards were fabricated by wooden mould fiber stitching method. Twice chemically treated fibers showed good results in flexural strength. For the orientations such as 0-90 and 45-45 gives better results for Flexural strength as well as for tensile strength. By increasing layers one can increase flexural and tensile strength.

44-47
11

Title : Study, Manufacturing and Analysis of Conveyor Chain Pin by using Composite Material

Authors : A.M. Khandekar, G.R. Mote, N.S. Vastre, S.A. Mosalgi, S.B. Bhosale

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Carbon fibers are fibers about 5–10 micro meters in diameter and composed mostly of carbon atoms. Carbon fibers have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. These properties have made carbon fiber very popular in aerospace, civil engineering, military, and motorsports, along with other competition sports. However, they are relatively expensive when compared with similar fibers, such as glass fibers or plastic fibers. Carbon fibers are usually combined with other materials to form a composite. When impregnated with a plastic resin and baked it forms carbon-fiber-reinforced polymer (often referred to as carbon fiber) which has a very high strength-to-weight ratio, and is extremely rigid although somewhat brittle. Carbon fibers are also composited with other materials, such as graphite, to form reinforced carbon-carbon composites, which have a very high heat tolerance. Carbon fibers are the strongest fibers currently available to reinforce polymeric matrices. High performance grade carbon fibers display tensile strength exceeding 6 GPa and tensile modulus exceeding 600GPa. Coupled with their low-density (1.8 -2.0 g/cm3), carbon fibers possess the highest specific stiffness and strength, and find extensive use in aerospace grade composites.

48-50
12

Title : Computational Analysis of a Piezo-electrically Actuated Valve-less Micropump for Micro-fluidic Applications

Authors : Rohit D. Bankar, Ajay L. Godase, Ashok B. Mule, Nikhil N. Gaikwad, Ranjitsinha R. Gidde

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Computational analysis of a piezo-electrically actuated valve-less micropump is carried out for microfluidic applications. The effect of the operating parameter frequency on the performance of micropump is studied. The valve-less micropump consists of nozzle/diffuser elements; the pump chamber; a thin membrane (diaphragm) and a piezoelectric disc, PZT 5A of diameter 12 mm as the actuator. The complete electric–fluid–solidcoupling model is simulated with the commercial finite element analysis software COMSOL Multiphysics 5.0 to investigate the performance of the micropump.

51-55
13

Title : Design and Development of a Pneumatic Car

Authors : Siddharam S. Warad, Sonal R. Swami, Akash V. Reshame, Rahul A. Hadapad, Virendra V. Mahajan, Sachin D. Bhosale

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In the present scenario of world, the engineers having the challenges to find the different ways drive efficient by using the alternative energy sources which are the eco-friendly to environment. The compressed air is used as a source for various operations in the industry and also having the ennivormental friendly.  So, the engineers are focused on the compressed air as non-polluting fuel for the vehicles which is termed as pneumatic cars. This paper describes the brief introduction to latest development of pneumatic cars, the efficiency and properties of the compressed air with respect to enthalpy, internal energy, density of the compressed air.  The working of the pneumatic car, with the use of the pneumatic actuators that creates useful work by expanding the compressed air, electronic component with simple mechanism. Hence, the pneumatic cars are affordable, safe and future of the automobile industry.

56-58
14

Title : Analysis of Crack on Aeroplane Wing at Different Positions using ANSYS Software

Authors : Hrushikesh N. Paricharak, Aditya A. Lotake, Sudhakar V. Mane, Darshan R. Gaikwad, Rushikesh H. Vastre, Digambar T. kashid

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The present study revivals the analysis of crack on aeroplane wing at different positions. Also states the deformation of wing structure against the different positions of crack on aeroplane wing. For this study the NACA 4412 Clark-y profile is used to generate aerofoil shape of aeroplane A320. Again the model is generated in CATIA v5 R21 software for further analysis. The ANSYS is used to carry out harmonic response analysis for prediction of deformation against pre loading condition at different positions of crack on wing. This shows the variation in results for different positions of cracks on wing to decide the maximum deformation of wing structure.

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15

Title : Deformation Analysis of Wood Cutting Set-upusing ANSYS

Authors : Priyadarshani Gaikwad, Komal Gund, Kulsum Kazi, Bhairavi Fund, Pravin S. Kachare

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Now a day’s machines are very expensive and having high maintenance and as there is increase in technology in daily activity the manually operated hydraulic wood cutting machine is used. The wood cutting tool is important element for cutting wood into small pieces and which reduces the human effort. It is manually operated machine which reduces the human effort. This is performed in order to improve the quality, efficiency and reduction in cost. The hydraulic wood cutter is the wood cutting machine which is used to cut the wood into small pieces. The wood cutting tool is the main element of the wood cutting device. In this paper deformation analysis of wood cutting tool for variable load is carried out. The deformation analysis is carried out by varying the load acting on the wood cutting tool. The deformation analysis is performed by using ANSYS 15.0. The ANSYS Workbench is an intuitive up-front analysis tool that is used in conjunction with CAD system. ANSYS is a finite element analysis tool for structural analysis which includes linear, nonlinear and dynamic studies. It provides the equation solver for wide range of mechanical problem solvers. For deformation analysis the ANSYS Workbench software is used.In this deformation analysis, it is observed that the deformation increases with increase in load. The deformation analysis is carried out for 200kN, 300kN, 500kN forces on tool which gives deformation in tool element.The simulation for analysis of the deformation behavior wood cutting tool at different loads like 200 to 500 KN at an interval of 100 KN is analyzed. As load increases on the cutting tool the deformation also increases.

 

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16

Title : Study of depth of etching in Photo Chemical Machining by coloured Phototool

Authors : Sumit S. Khajepawar, Guruprasad V. Badave, Shubham S. Bhosale, Dnyanraj S. Telang, Nitin D. Misal

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The conventional machining deals with the removal of metal by direct contact between the tool and the work piece, which results into the formation of chips, debris, burr, etc. So, there is a huge scope for unconventional machining process. This paper focuses on study of Depth of etching in photochemical machining by using colored photo tool. The objective is to study the effect of different colored photo tools and achieve the stepped structure at micro level. This process is the bridge between 2D and 3D manufacturing processes. Initially the colored photo-tools are created; copper material was selected for experimentation. The control parameters selected were temperature, concentration and time. The concentration of etchant is 400 grams per liter. The temperature of the etchant is 50 degree Celsius and the time for etching is 300 seconds. The readings are taken by Digital Micro-meter.

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17

Title : Fabrication of Micro Channel Heat Sink by using Photo Chemical Machining

Authors : Mayuri A. Raut, Snehal S. Kale, Prajakta V. Pangavkar, Samadhan J. Shinde, Sandeep S. Wangikar, Subhash V. Jadhav, Digambar T. Kashid

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Generally Heat Sink is the inactive warmth exchanger that exchanges the warmth produced by an electronic or a mechanical gadget to a liquid medium, for example, air or a fluid coolant, where it is dispersed far from the gadget, along these lines permitting guideline of the gadget's temperature at ideal dimension. In short it is a gadget or a substance for engrossing over the top or undesirable warmth. For the most part heat sinks are accessible at Mouser Electronics. There are different techniques for manufacture of heat sink. Contingent upon their shapes and materials, heat sinks can be made by many assembling strategies. The most widely recognized and financially savvy strategy incorporate expulsion, manufacturing, throwing and stepping. Other greater expense strategies incorporate CNC machining, skiving and swaging. In this paper, an endeavor has been made for the manufacture of heat sink by utilizing Photo Chemical Machining process. The channels of the heat sinkare made by utilizing photochemical machining process. For this, Ferric Chloride is utilized as the etchant. Further, portrayal is done and after that surface unpleasantness is estimated. From study, we reasoned that the photochemical machining is additionally appropriate for the creation of the heat sink.

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18

Title : Fabrication of Micro Channel Mold by using CO2 Laser Machining

Authors : Mayur M. Jokare, Abhishek H. Vedpathak, Rajendra D. Pawar, Digambar T. Kashid, Sandeep S. Wangikar

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Mostly the micro channel parts are significant for lab on a chip device. Use of micro channels is in biomedical devices and micro fluidic applications. The fabrication of micro channel is quite tough by using conventional manufacturing. To characterize technology, different methods are used for the fabrication of micro channel. By using both conventional and non-conventional techniques, like micro milling, lithography, embossing processes and laser ablation processing. In this paper, a study on the use of a commercial CO2 laser system for fabrication of micro-channel molds using Acrylic material. The accuracy of micro channel mainly depends on the fabricated molds. by using laser power and scanning speed we can control the depth of micro channel. To analyze the effect of Laser power and scanning speed on the depth of the Micro channel mold primary experimentation is performed. According to analysis, it is observed that the depth of micro channel mold increasing linearly with an increase in laser power and decreasing with increasing speed. the micro channel with a straight configuration having Y shaped inlet with triangular obstacles .by using the CO2 Laser machining on Polymethylmethacrylate(PMMA) the (split and recombine approach, SAR) is fabricated.  The fabricated mold can be used for the soft lithography process. The fabricated Micro Channel mold has been performed using RAPID I Vision 5 microscope and Mitutoyo surface roughness tester.

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19

Title : Comparative Stress Analysis of Connecting rod using ANSYS for Different Materials

Authors : Aditya A. Lotake, Shakir M. Mulani, Sohel M. Mulani, Rajratna D. Meshram, Yashpal M. Khedkar

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Now a days the IC Engines are widely used. Connecting rod is used to connect the piston to the crankshaft. As it plays very important role its analysis should be carried out. In this presented work connecting rod of two-wheeler is modeled using CATIA v5 R21 software. After modeling of connecting rod it is made available for analysis in ANSYS. In the ANSYS Workbench static analysis of connecting rod is performed. Analysis is performed for different materials like Cast iron, Copper alloy, Silicon anisotropic, Structural steel and Titanium alloy to find Von misses stress coming on the connecting rod. From above analysis it is shown that Titanium alloy is most suitable material for the two wheeler connecting rod.

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20

Title : Review on Solar Air Conditioning with Desiccant Wheel

Authors : Sunil S. Miskin, Onkar P. Dhudhane, Abhishek H. Vedpathak, Yogesh R. Barkul, Prof. Sachin M. Kale, Prof. Subhash V. Jadhav

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Making progress toward eco-friendly and checking anyway much essentialness as could sensibly be normal has transformed into the purpose of assembly as per the world. In this paper we give evaluate working and principals of sun controlled cooling. There are various source of essentially available to us that will direct our regular resources and cut down on risky transmissions that are eliminate climate condition. Various moving powers and by open to individuals and organizations who execute the usage of these earth very much arranged source of essentials. Our arrangement and improvement of a sun situated desiccant atmosphere control framework is another decision to cooling that uses far less power and moreover uses imperatives from the sun to run the system. We set out to make an atmosphere control framework that does not make any dangerous outpourings and wipes out the power cost to a home loan holder. The solar desiccant constrained air framework uses sun-based power as the essential imperatives source to help in the thermodynamic warmth trade process similarly as warmth trade models to change over including air into cool air. With our created structure we have seen temperature similarly as moisture level drops all through the desiccant cooling system.

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21

Title : Experimental Analysis of Solar Dryer for Agricultural and Food Products

Authors : Kshitij Moholkar, Akshay Jadhao, Rohit Chavan, Ravindra Bhosale, Kuldip Pukale

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The drying of various agricultural food products is from very far old centuries are under a presence of the sun, in this drying process has several demerits also i.e. spoiling to the skin due to a very high hot summer temperature, polluted air, dust and harmful effects of UV radiations. Hence only in the best weather, climatic conditions this process is suitable to the manpower, laborfarmers etc.Due to the cultural and industrial revolutions, the different artificial drying processes havecome into the practice but some of them has ultimate cost and some other parameters. Therefore, by using many more recent ideas and techniques of science we have developed most efficient and successful process of sun drying i.e. "solar dryer." this solar dryer totally utilizes the solar energy to heat up air and dry the agricultural products by gradual removing of moisture content from final product.

This paper represents the design, construction and experimentation of a portable solar dryer for various agricultural food preservations. In this solar dryer the heated air from a solar panel is passed through a food net or bed, and also at this time, the drying cabinet or interior absorbs the extra solar energy indirect type from the reflection mirror which we have adjusted newly to it.

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22

Title : Design, Fabrication, and Analysis of Miniature Centrifugal Pump

Authors : Pankaj V. Patil, Digambar S. Pawar, Chetan S. Mote, Ashutosh B. Deshmukh, Subhash V. Jadhav

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In this paper, an experimental analysis is carried out for a mini-centrifugal pump, which is fabricated by an advanced manufacturing technology like 3D Printing.  A small electric motor is used to drive the pump of 15 cmimpeller diameter, and it is validated for its performance in terms of discharge with the results available in the literature.

Further, the performance of the pump is discussed in terms of other parameters. The discharge of the pump is found to be decreased with increasing head.Similarly, the voltage required for the pumping is found to be increasing with the pumping head. The mini-pump used in the study is found to be perform similar to that of a macro-pump with respect to the discharge of the pump.

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Title : Etching Depthvariation of Brass Material for Different Operating Conditions

Authors : Jadhav Saurabh M., Karatkar Onkar V., Bangale Kamesh N., Choudhari Deepak B., Abhay A. Utpat, Kamble Banduraj K.

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The conventional machining deals with the removal of metal by direct contact between the tool and the work piece, which results into the formation of chips, debris etc. So, there is scope for unconventional machining process like PCM. This paper focuses on study of Depth of etching in photochemical machining by varying temperature and time of etching. The objective is to study the effect of these parameters and find relation between them. This process is the bridge between 2D and 3D manufacturing processes. Initially the photo-tools are prepared; Brass material was taken for experimentation. The control parameters were temperature, concentration and time. The concentration of etchant (FeCl3) was 781 grams per liter. The temperature and time are varying parameters for etching. The readings are taken by Digital Micro-meter. A pattern may be transferred onto a photoresist film by exposing the photoresist to light through a mask of the pattern called photo-tool and obtain pattern on metal.

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24

Title : BMTC Pay – An Android Based Project on Digital Payment System in Buses

Authors : Rahul Kumar Jaiswal, Sagar Thapa, Akash Kumar Yadav, Aneev Amit, Manju More E

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As per the current scenario, the payment systemused in buses is same old way of getting the ticket from the conductor. This is way more time taking since providing with the correct amount (change) is not possible every time. Also communication takes more time as compared to digital booking.For example; the bus conductor has to print tickets for every passenger after knowing their respective stoppage which takes comparatively more time as compared to digital payment.The main idea behind this project is to collect the fare automatically using digital payment system. It will be designed to make travelling more comfortable for the people.Carrying changes will no longer be a problem and keeping an eye on the transactions will no longer be a headache for the government as well as for the passenger.

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Title : Computational Study of NACA 0012 Airfoil in Air-Sand Particle Two-Phase Flow at Reynolds Number of Re=1.76×106

Authors : Dimitra C. Douvi, Eleni C. Douvi, Dionissios P. Margaris

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The current study deals with numerical simulations of a National Advisory Committee of Aeronautics (NACA) airfoil, NACA 0012, using a commercial Computational Fluid Dynamics (CFD) Code, in air phase flow as well as in two-phase flow of air and sand particles, which consisted of 1 percent and 5 percent sand particles in air. The simulations where accomplished for Reynolds number of Re=1.76×106, at various angles of attack, on Realizable k–ε turbulence model and the injection of the particles was succeeded using the Discrete Phase Model (DPM). The validation of the obtained numerical results was achieved by comparing them with reliable experimental data from other researchers and it was shown that the existence of sand particles in the air influences the aerodynamic performance of the airfoil. In particular, the predicted lift coefficient was decreased and at the same time the drag coefficient was increased. By the help of contours of static pressure and DPM concentration, it was possible to study the region around NACA 0012 airfoil.

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26

Title : Auctioning Using Blockchain Advantage Analysis

Authors : Mulhem Naser Baki

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The paper reviews the various benefits of blockchain on auctioning. Blockchain is probably the most thrilling technological innovation after the Internet. The use of blockchain on auctions has been relatively recent. However, its positive influences on auctioning cannot be understated. The literatures on blockchain in the field of technology were extensively retrieved and carefully studied through Google search on the internet in order to identify various advantages of blockchain on auctioning. In the first sections of the text, the author describes auctioning; and the traditional auction was looked into. Additionally, the text progresses by exploring the benefits of blockchain; the three categories of blockchain; how the blockchain works in auctions and related works on the study. It is hoped that this study will inform auctioneers and the industries at large of the incredible benefits and solutions blockchain proffers to the world of auctioning. 

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27

Title : Experimental Study of Wave Attenuation for a Tandem Breakwater

Authors : Nur Aini Mohd Arish, Othman A. Karim, Wan Hanna Melini Wan Mohtar

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This paper experimentally investigates the wave attenuation of a tandem breakwater. Tandem breakwater is conventional rubble mound breakwater sheltered with a seaward-submerged structure. The experimental works were done in a wave basin with dimensions of 25 m length, 18 m width and 1.2 m height. All tests were performed with regular waves generated from a piston type multi element wave maker with wave height, H = 0.15, 0.18 and 0.20 m and wave period, T= 2.05, 2.20 and 2.50 sec. Wave gauge was positioned at eight different locations to record water level and by using the measured data, the wave attenuation, WHA was calculated (WHA = 1- Kt). The objective of the experiment was to study the wave attenuation for the tandem breakwater with the influence of various angle of wave attack, 0, 15, 30 and 60 degree. Apart from the influence of angle of wave attack, the influence of relative distance between submerged and rubble mound breakwater towards wave attenuation, WHA was also been investigated. Tests are done for various breakwater spacing, (X/d = 8.33-15.56) and relative heights (h/d = 0.42-0.56). The results achieved shows that WHA are increasing along with the increasing of angle of wave attack but it is vice versa with increasing of the water depth. The highest WHA is 48.46 percent and 55.02 percent for relative distance, X/d = 6.67-8.89 (4 m) and X/d = 10.0-13.33 (6 m) respectively, both at the condition of 60° angle of wave attack.

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