Kavikulguru Institute of Technology and Science

Rāmtek, India

Kavikulguru Institute of Technology and Science

Rāmtek, India

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Parhad P.,Kavikulguru Institute of Technology and Science | Likhite A.,Visvesvaraya National Institute of Technology | Bhatt J.,Visvesvaraya National Institute of Technology
Transactions of the Indian Institute of Metals | Year: 2012

The response of inoculated low carbon equivalent iron to austempering heat treatment has remained as an unchartered area of investigation. The carbon equivalent of inoculated low carbon equivalent iron is much lesser than that of ductile iron, while modulus of elasticity is higher than it. This paper examines and compares the austempering transformations and microstructural changes during austempering of ductile iron and inoculated low carbon equivalent iron with respect to austempering parameters. The optical metallography and X-ray diffraction techniques are used to study the changes in the austempered structure. The alterations in austempered microstructure and structural parameters like, austenite volume fraction (X) and its carbon content (C) at an austempering temperature of 250°C are studied in the present investigation. It is observed that, austempering heat treatment produces fine ausferritic microstructure, similar to that present in austempered ductile iron at this temperature. However, some significant differences between the austempered microstructure of two alloys are noted. © Indian Institute of Metals 2012.


Jakkula S.,Visvesvaraya National Institute of Technology | Deshpande V.,Kavikulguru Institute of Technology and Science
Ceramics International | Year: 2013

Glass samples with composition of (50-X) PbO-X MgO-25 TiO 2-25B2O3 (where X=0, 5, 10 and 15 mol%) were prepared using conventional quenching technique. The amorphous nature of glass samples were confirmed by XRD. The glass transition temperature, Tg and crystallization temperature Tc were determined from the DTA. It has been observed that the addition of MgO enhances the Tg. The rise in Tg with MgO content may be attributed to the greater field strength of Mg2+ cation (as compared to Pb2+) which leads to the formation of stronger bonds. These glass samples were converted to glass-ceramics by following a two-stage heat treatment schedule. It was observed that there was good correlation between the density and CTE results of the glass-ceramics. The XRD results revealed the formation of tetragonal lead titanate as a major crystalline phase in the glass-ceramics. The addition of MgO to the glass contributes to the formation of MgB4O7. The dielectric constant for all the glass-ceramic samples was observed to be higher than that of corresponding glass samples. Further, with addition of MgO the room temperature dielectric constant for glass-ceramic samples increases up to 10 mol% of MgO and then decreases for 15 mol%. It has been further observed that the variation of dielectric constant of glass-ceramic samples with MgO content is exactly opposite to the variation of crystallite size of PbTiO3 embedded in the glass ceramic-samples. © 2012 Elsevier Ltd and Techna Group S.r.l.


Shankar J.,Kavikulguru Institute of Technology and Science | Deshpande V.K.,Visvesvaraya National Institute of Technology
AIP Conference Proceedings | Year: 2014

Glass samples with composition (50 - X) PbO - X MO - 25 TiO2-25B2O3 (where X = 0, 5, 10 and 15 mol % and M = Ba, Sr) were prepared using conventional quenching technique. It has been observed that the addition of MO to PbO - TiO2-B2O3, enhances the Tg. The rise in Tg with MO content may be attributed to the greater field strength of M2+ cation which leads to the formation of stronger bonds. These glass samples were converted to glass ceramics by following two stage heat treatment schedule. The XRD results revealed the formation of tetragonal lead titanate as a major crystalline phase in the glass ceramics. The addition of MO to the glass, contributes to the formation of secondary crystalline phases BaB2O4, Sr2B2O5. The ferroelectric nature of all the glass ceramic samples is confirmed by P - E hysteresis measurements. © 2014 AIP Publishing LLC.


Parhad P.,Kavikulguru Institute of Technology and Science | Likhite A.,Visvesvaraya National Institute of Technology | Bhatt J.,Visvesvaraya National Institute of Technology | Peshwe D.,Visvesvaraya National Institute of Technology
Transactions of the Indian Institute of Metals | Year: 2014

Austempered Ductile Iron (ADI) is a relatively novel material to the industrial market and it is often reported that ADI is a difficult material for machining. This work mainly focuses on machinability studies of ADI. The Ductile Iron (DI) was austempered at 250 °C for different durations and the process window for austempering was established by studying the microstructure. The microstructural characterization of the material was done using optical microscopy, SEM and XRD. The samples austempered as per the process window were then subjected to turning using a TiAlN-coated tungsten carbide insert to study the effect of cutting parameters, namely the cutting speed & the depth of cut. The effect was investigated in terms of the surface roughness obtained. It has been observed that increasing cutting speed results in decreasing of surface roughness and improvement in surface quality. The surface quality deteriorates with decreasing the cutting speed. Based on the observations it is concluded that when ADI is subjected to turning with TiAlN-coated tungsten carbide insert, the combination of a depth of cut of 2 mm and feed rate of 0.1 mm/rev results in the best surface quality when the cutting speeds in the range 150–200 m/min are employed. The observed machinability behaviour was investigated in light of the microstructure of the material obtained under the given austempering conditions and a structure–property co-relation was established between the two. High-speed cutting with deeper depth of cut not only reduce machining expenses by increasing production volume and rate, but also results in good surface quality of machined parts. © 2014, The Indian Institute of Metals - IIM.


Shankar J.,Kavikulguru Institute of Technology and Science | Deshpande V.K.,Visvesvaraya National Institute of Technology
Ferroelectrics | Year: 2011

Glasses of compositions (50 -X) PbO-X CaO-25 TiO 2-25 B 2O 3 (where X = 0,5,10 and 15 mol%) were prepared by conventional quenching technique. The glass samples were converted to glass ceramics by two stage heat treatment schedule. The XRD results confirmed the formation of ferroelectric PbTiO 3 as a major phase in the glass ceramics. For all the CaO added samples the dielectric constant as a function of temperature, exhibit a peak around 475°C, which is close to the Curie temperature of PbTiO 3. The hysteresis measurement supports the ferroelectric nature of the glass ceramics. Copyright © Taylor & Francis Group, LLC.


Shankar J.,Kavikulguru Institute of Technology and Science | Deshpande V.K.,Visvesvaraya National Institute of Technology
Physica B: Condensed Matter | Year: 2011

Glass samples with composition of (50-X)PbO(25X)TiO 225B 2O 3 (where X=0, 5, 10 and 12.5 mol%) were prepared using conventional quenching technique. The glass transition temperature, T g and crystallization temperature T c were determined from the DTA. These glass samples were converted to glass ceramics by following two stage heat treatment schedule. The glass ceramic samples were characterized by XRD, SEM and dielectric constant measurements. The XRD results revealed the formation of ferroelectric lead titanate (PT) as a major crystalline phase in the glass ceramics. The density increases and the CTE decreases for all glass ceramics with increase in X (mol%). This may be attributed to increase in PT phase. The SEM results which show rounded crystallites of lead titanate, also supports other results. Hysteresis loops observed at room temperature confirms the ferroelectric nature of glass ceramics. The optimized glass ceramic sample exhibits high dielectric constant which is of technical importance. © 2010 Elsevier B.V. All rights reserved.


Shankar J.,Kavikulguru Institute of Technology and Science | Deshpande V.K.,Visvesvaraya National Institute of Technology
Physica B: Condensed Matter | Year: 2012

The glasses with composition (50-X)PbO-XSrO-25TiO 2-25B 2O 3 (where X=0, 5, 10 and 15 mol%) were prepared using conventional quenching technique. The T g, T c, density and CTE of the glass samples were measured. The T g observed to increase with increasing concentration of SrO, while the T c first decreased and then increased. The glass samples were converted to glass ceramics by following two stage heat treatment schedule. The glass ceramic samples were characterized by XRD, SEM and dielectric measurements. The XRD results revealed the formation of ferroelectric lead titanate as a major crystalline phase in glass ceramics. Additional phases observed include Sr 2B 2O 5 and PbB 2O 4. The room temperature (RT) dielectric constant of glass and glass ceramics are in the range of 100-120 which is promising for capacitor application. © 2012 Elsevier B.V. All rights reserved.


Dahake S.W.,Visvesvaraya National Institute of Technology | Kuthe A.M.,Visvesvaraya National Institute of Technology | Mawale M.B.,Kavikulguru Institute of Technology and Science | Bagde A.D.,Visvesvaraya National Institute of Technology
Rapid Prototyping Journal | Year: 2016

Purpose - This paper aims to provide an overview of applications of medical rapid prototyping (MRP)-assisted customized surgical guides (CSGs) and shows the potential of this technology in complex surgeries. This review paper also reports two case studies from open literature where MRP-assisted CSGs have been successfully used in complex surgeries. Design/methodology/approach - Key publications from the past two decades have been reviewed. Findings - This study concludes that the use of MRP-assisted CSGs improves the accuracy of surgery. Additionally, MRP-assisted CSGs make the surgery much faster, accurate and cheaper than any other technique. The outcome based on literature review and two case studies strongly suggested that MRP-assisted CSGs might become part of a standard protocol in the medical sector to operate the various complex surgeries, in the near future. Practical implications - Advanced technologies like radiology, image processing, virtual surgical planning (VSP), computer-aided design (CAD) and MRP made it possible to fabricate the CSGs. MRP-assisted CSGs can easily transfer the VSP into the actual surgery. Originality/value - This paper is beneficial to study the development and applications of MRP-assisted CSGs in complex surgeries. © Emerald Group Publishing Limited.


Mawale M.B.,Kavikulguru Institute of Technology and Science | Kuthe A.M.,Visvesvaraya National Institute of Technology | Dahake S.W.,Visvesvaraya National Institute of Technology
Concurrent Engineering Research and Applications | Year: 2016

Additive manufacturing technology permits to develop a product with high level of geometrical complex shape and produce it as unique product by implying low cost and quick time production compared with other manufacturing processes. It has proved a faster method across various industrial disciplines to build functional parts from computer-aided design model. Freedom for design in product development is a new reality with additive manufacturing. In this article, a review of additive product development is done in various industries including food, sports, and biomedical. Furthermore, different additive manufacturing techniques which are used in innovative product development are explained with case studies and examples. Also, a conceptual framework has been represented to use additive manufacturing as collaborative tool with theory of inventive problem solving technique in the innovative product development. © SAGE Publications. © The Author(s) 2015.


Lahade S.V.,Kavikulguru Institute of Technology and Science | Hirekhan S.R.,Government College of Engineering, Aurangabad
2015 International Conference on Industrial Instrumentation and Control, ICIC 2015 | Year: 2015

For the economic development and progress of any country, roads play an important role by providing transportation ease for goods as well as for passengers. The number of vehicles on road is increasing day by day which are controlled by the traditional Traffic Light Controller in the countries like India and other developing countries. In traditional Traffic Light Controller, fixed time is allotted for traffic on each road to pass irrespective of the traffic intensity. This is an inefficient controlling method which consumes time, effort and fuel of users unnecessarily; also it doesn't have any provision of sensing and giving priority for the emergency vehicles to pass first. This problem is addressed by using Intelligent and Adaptive Traffic Light Controller (IA-TLC) implemented on FPGA using verilog as an example of FSM with 35 states. FPGA, microcontroller and ASIC designs have been used for traffic light controller. Reason for selecting FPGA is that it has numerous merits over microcontroller in TLC design. Some of these merits are high speed of operation, more number of input/output ports and better performance [1]. In IA-TLC density of traffic is sensed by using IR sensors throughout day and night, and accordingly time is allotted for users to pass. Other advantages of this system are: i) System senses emergency vehicles on the individual road moreover it gives priority to the traffic of that particular road where the emergency vehicles is sensed, ii) Finds out defaulter who crosses the red signal by capturing images using camera. IA-TLC is successfully implemented on Spartan 3E FPGA and same module is simulated for Spartan-3E, Spartan-6, Virtex-5 FPGA. © 2015 IEEE.

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