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FORMULATION OF MATHEMATICAL MODEL FOR MAINTENANCE COST OF A STONE CRUSHING PLANT BASED ON DIMENSIONAL ANALYSIS AND MULTIPLE REGRESSION
Get PDFThis paper presents the approach for the mathematical modeling of maintenance cost for the set up of new Stone Crushing Plant based on the dimensional analysis and multiple regression. Presented maintenance cost mathematical model is derived based on the generated design data. Design data is generated from actual design of all stone crushing plants followed by static and dynamic analysis. Estimation of design data is carried out based on the assumed plant layout. Dimensional analysis is used to make the independent and dependent variables dimensionless and to get dimensionless equation. Later, multiple regression analysis is applied to this dimensionless equation to obtain the index values based on the least square method. The mathematical model of maintenance cost is formulated using these obtained index values. Finally, the formulated model is evaluated on the basis of correlation and root mean square error between the computed values by model and the estimated values
Dynamic Interaction between Manipulator and Omni-Directional Platform
Get PDFRecent advancements in mechatronics has led to tremendous development of application of robots for industrial applications involving high health hazards, rough working conditions and difficult to reach locations. Robot assisted welding is one such high risk operation for human being. The industrial arc welding robots are either mounted on the floor, table or on overhead rails. In this scenario, the jobs to be welded are brought to shop floor. However, the on-sight joining of big pipes and structures with precision and speed, demands for mobility of welding robot. In this research work, a novel concept of mounting 5-dof welding robot on the omni-directional platform (Omni-WMR) is implemented to provides immense maneuvering mobility to the manipulator. This paper presents the combined dynamic model of omnidirectional mobile robot for welding operation to study the effect of dynamic interaction between manipulator and mobile platform. Dynamic interaction is carried out to find the variation in torque at manipulator link due to the motion of platform as well as its location on the platform. In addition, the variation in torque developed at platform wheels due to positioning the manipulator at two different locations on platform is accessed. For this, two case studies have been discussed to study the effect of dynamic interaction between manipulator and omni-directional platform
FAST LOW POWER FREQUENCY SYNTHESIS APPLICATIONS BY USING A DCVSL DELAY CELL
Get PDFIn this paper, we proposed two new structures for differential cascode voltage switch logic (DCVSL) pull-up stage. In conventional DCVSL structure these lies a drawback i.e. low-to-high propagation delay is larger than high-to-low propagation delay which could be reduced by using DCVSL-R. Using resistors in DCVSL-R structure, parasitic effects are coming into picture and it occupies more area on the chip [1]. To minimize these problems we propose a new Ultra Low Power Diode (ULPD) structures in place of resistors. This provides the minimum parasitic effects and occupies less area on the chip. Second one uses Complementary Pass Transistor Logic (CPTL) structure, which provides complementary outputs. This is an alternate circuit for conventional DCVSL structure. The performances of the proposed circuits are examined using cadence and model parameters of a 180nm CMOS process. This simulation result of the two circuits is presented and is compared. These circuits are suitable for VLSI implementation. Secondly, we proposed two new CMOS Schmitt trigger circuits. These Schmitt trigger circuits are evaluated both analytically and numerically with the sources from proposed ULPD ring oscillators. The hysteresis curves of the circuits are presented. The Schmitt triggers introduced here are most suitable for high speed applications. The proposed circuits havebeen designed in TSMC-0.18μm 1.8v CMOS technology and analyzed using spectre from cadence Design systems at 50MHz and 103MHz
Vertical Vibration of Founations on Homogeneous Elastic Half-Space
Get PDFThe stiffness and damping coefficients for a rigid massless circular foundation resting on homogeneous elastic half-space under vertical harmonic excitation are evaluated using one-dimensional wave propagation in cones (cone model), based on strength of material approach. Using these coefficients, the frequency dependant displacement amplitude as well as the magnification factor of a massive foundation is computed. The resonant frequencies and peak amplitudes are also studied varying the influencing parameters such as the type of soil and the mass of the foundation. To verify the validity of the model developed, the computed response is compared with reported analytical results with wide variation of influencing parameters, which shows a good agreement. Thus, the simplified cone model can be used in day-to-day analysis and design of foundations under vertical dynamic loading
Dr. Vicente García-Díaz
No full textDr. Vicente García-Díaz is a Software Engineer, PhD in Computer Science. He has a Master in Occupational Risk Prevention. He has the qualification of University Expert in Blockchain Application Development. He is an Associate Professor in the Department of Computer Science at the University of Oviedo. He is also part of the editorial and advisory board of several journals and has been editor of several special issues in books and journals. He has supervised 100+academic projects and published 100+ research papers in journals, conferences, and books. His teaching interests are primarily in the design and analysis of algorithms and the design of domain-specific languages. His current research interests include machine learning, decision support systems, eHealth and eLearning.https://www.interscience.in/mentors/1063/thumbnail.jp
Formulation of Equivalent Steel Section for Partially Encased Composite Column under Concentric Gravity Loading
Get PDFPartially encased composite column (PEC) consists of thin walled welded H- shaped steel section with transverse links provided at regular intervals between the flanges to inhibit the occurrence of local buckling in the thin flange plates. The space between the flanges and the web plate are filled up with concrete. Extensive experimental investigations have been conducted by several research groups to understand the behavior of this relatively new composite column under both concentric and eccentric loading conditions along with sophisticated non-linear finite element analysis. But the separation between concrete and steel initiates the unstable condition in the finite element analysis near the ultimate point when flange plate buckles. To avoid the expensive and cumbersome modeling of the behavior at the interface of two dissimilar materials, an attempt has been made in this study to replace the composite section of PEC column with an equivalent steel section which can easily be incorporated in commercially available finite element softwares
Unveiling the book SELF MANAGEMENT
No full textUnveiling the book SELF MANAGEMENT by Col. Rajendra Bhanj, written by our core and guest faculties of IIMT and edited by our respected Chairman sir Prof. Dr. Srikanta Patnaik on 15th August 2020.https://www.interscience.in/past_conf_gallery/1017/thumbnail.jp
ASSESSMENT OF GROUND WATER QUALITY STATUS USING NSFWQI METHOD IN SELECTED RURAL AREA OF KOPARGAON, AHMEDNAGAR, MAHARASHTRA
Get PDFWater Quality Index has been calculated for different sources in Pre monsoon period (March 2012) i.e. dug well, bore well, Hand pumps & Prercolation well at Murshatpur ,Chandgavhan & Hingani villages of Kopargaon Taluka, Ahmednagar, Maharashtra. This has been determined by collecting ground water 16 numbers of sampling stations and subjecting the samples to a comprehensive physiochemical analysis. For calculating the WQI, the following 10 parameters have been considered i.e Temperature,pH, Alkalinity ,Dissolved Oxygen, ,TDS ,Total hardness, Calcium, Magnesium, Chloride, Fluoride. The WQI for these samples ranges from 226.88 to 799.15. The high value of WQI has been found to be mainly from the higher values of Alkalinity, TDS, Hardness, Calcium, Magenesium in ground water. The result of analysis have been used to suggest model for predicting water quality,The analysis reveals that the ground water of the area needs some degree of treatment before consumption, and it also need to be protected from the perils of contamination
ENERGY-EFFICIENT AND COST-EFFECTIVE SEWAGE TREATMENT USING PHYTORID TECHNOLOGY
Get PDFThe process of design, construction and operation of sewage treatment plant (STP) requires multi-disciplinary approach. Numerous conventional methods are available for design of sewage treatment plants. The process involved in these treatments is either aerobic, anaerobic or combination requiring number of mechanical and electrical items thereby requiring substantial energy. The ever growing need of energy makes the design, operation and maintenance of STP a challenging task. The conventional method of sewage treatment can be made efficient by advanced technologies and intelligent supervision but this in turn increases the total cost. However, root zone technology developed by National Environmental Engineering Research Institute treats the sewage by phytorid plant. It is found from the study carried out on nine STPs at various locations in Pune and Mumbai in Maharashtra (India) that the sewage treatment by phytorid technology uses only 20% of the energy as compared to conventional sewage treatment plants. It is thus concluded that phytorid technology is the future for sewage treatment
REUSE OF TEXTILE MILL SLUDGE IN BURNT CLAY BRICKS
Get PDFTextile mill being second largest industry in India faces problem of sludge disposal. In this study attempt is made to reuse textile mill sludge in burnt clay bricks. textile mill sludge is used to replace base material by weight upto 35%. Analysis of textile mill sludge and soils is done for its chemical content. Bricks cast by adding sludge are fired after drying at 6000C to 8000C and for 8, 16 and 24 hrs. textile sludge can be added added up to 15% as it gives compressive strength above 3.5 N/mm2 and water absorption ratio less than 20%. Thus reuse of textile mill sludge in burnt clay bricks is better option so that problem of ultimate disposal of textile mill sludge can be solved up to greater extent