Antaryami Mishra |
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| Investigations of Mechanical Characteristics of Chicken Feather-Teak wood Dust Filled Epoxy Composites | ||||||||
The present research has been undertaken with an objective to explore the potential of wood
dust and chicken feather as reinforcing material in epoxy composites and to investigate the mechanical
behaviour of the composites. Composites of teak wood dust (450 μm size) in 10,15 and 20 percentages of
weight mixed with epoxy along with 5 % of chopped chicken feather have been prepared by hand lay up
technique. The metallic mould developed in house was used to cast ASTM standard specimens. All the three
samples have been tested in UTM for tensile strength and it is observed that composite with 15 % teak wood
dust is having highest strength of 8.93 MPa. From water absorption tests in 24 hours the weight gain is very
little and negligible for all the composites. Hence these composites can perform very well in moist atmosphere.
Chicken feather-teak wood dust-epoxy composites, tensile, water absorption tests
[1]. Justin, R. Barone, and Walter F. Schmidt. "Polyethylene Reinforced with Keratin Fibres Obtained from
Chicken Feathers," Composites Science and Technology, 2005, Vol.65, pp. 173-181.
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A.Vijay Nireesha, K.Mounika, M.Ganesh Raghava, K.Pushpa, Ms.Md Azima, Ms.R.Lalitha |
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Design of High-Speed Dynamic Double-Tail Comparator |
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The analog-to-digital converters which are of ultra low-power, area efficient, and high speed
converters are made of dynamic regenerative comparators. These comparators can maximize speed and power
efficiency. The delay and power dissipation of dynamic comparators are analyzed in this paper. The delays and
tradeoff can be explored. The circuit of a conventional double tail comparator in this analysis is modified for
fast operation even in different supply voltages. By using power gating technique and adding few transistors,
the positive feedback during the regeneration is strengthened in the proposed comparator structure..............
Double-tail comparator, high-speed analog-to-digital converters (ADCs), delays, low-power
analog design.
[1]. Samaneh Babayan-Mashhadi, " Analysis and Design of a low-Voltage Low-power Double-Tail
Comparator", IEEE transactions on VLSI, Vol 22, no.2, February 2014. [2]. A. Mesgarani, M. N. Alam, F. Z. Nelson, and S. U. Ay, "Supply boosting technique for designing very low-voltage mixed-signal circuits in standard CMOS," in Proc. IEEE Int. Midwest Symp. Circuits Syst. Dig. Tech. Papers, Aug. 2010, pp. 893–896. [3]. B. Goll and H. Zimmermann, "A comparator with reduced delay time in 65-nm CMOS for supply voltages down to 0.65," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol. 56, no. 11, pp. 810–814, Nov. 2009. [4]. B. Goll and H. Zimmermann, "A 65nm CMOS comparator with modified latch to achieve 7GHz/1.3mW at 1.2V and 700MHz/47μW at 0.6V," in Proc. IEEE Int. Solid-State Circuits Conf. Dig. Tech. Papers, Feb. 2009, pp. 328–329. [5]. B. J. Blalock, "Body-driving as a Low-Voltage Analog Design Technique for CMOS technology," in Proc. IEEE Southwest Symp. Mixed-Signal Design, Feb. 2000, pp. 113–118.
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K Balaji, S Emilon Zeon Rajan, C Ganesan, M Jananee, S Sanjay Kumar |
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Design and Development of Transonic Axial Flow Compressor Rotor Blade |
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This paper is about a new computational fluid dynamics developed for the transonic flow in a
compressor rotor. Due to 3-Dimensional blade modification the arrangements satisfying the required boundary
condition. Engine compressor towards distorted inflow has to be taken in account which is already in the
design phase. Flow separation over the blade surface reduction and elimination can improve better
aerodynamic, performance, efficiency and stall margin. NASA transonic rotor tip critical in baseline blade rotor
performance energizing the low momentum boundary layer, controlling the inception of stall. A Profile
generator are attached on the inner casing of the rotor ahead to the loading edge of the rotor and it is
influenced on the overall performance which has been studied.
Compressor rotor blade, Numerical investigation, Flow separation, Vortex generators, Stall
margin, Efficiency.
[1] Moore Royce, D., & Reid, L. (1982). Performance of Single stage Axial Transonic Compressor with
rotor and stator), aspect ratios of 1.19 and 1.26 respectively and with design pressure ratio of 1.82.
NASA Technical Paper, (November 1978), 105. ] [2] Chen, G. T., Greitzer, E. M., Tan, C. S., & Marble, F. E. (1991). Similarity Analysis of Compressor Tip Clearance Flow Structure. Journal of Turbo machinery, 113(2), 260. [3] Freeman, C., & A., C. N. (1992). Method for the prediction of supersonic compressor blade performance. Journal of Propulsion and Power, 8(1), 199–208. [4] Law, C. H., & Wadia, A. R. (1993). Low Aspect Ratio Transonic Rotors: Part 1—Baseline Design and performance. Journal of Turbo machinery, 115(2), 218–225. [5] Suder, K. L., Chima, R. V., Strazisar, a. J., & Roberts, W. B. (1995). The Effect of Adding Roughness and Thickness to a Transonic Axial Compressor Rotor. Journal of Turbomachinery,117(4), 491.
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G.Vigneshwaran, M.Vijayaraghavan, K.Sivamanikandan, K.Keerthana, K.Balaji |
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Fluid-Structure Interaction Over an Aircraft Wing |
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Aircraft is a brilliant man-made structure which helps us to fly over the world. At the same
time, aircraft is a complex structure to be checked and maintained for the aero elasticity due to aerodynamic
properties. In this paper, the fluid-structure interaction problem in super critical NASA SC(2)-0412 airfoil is
discussed. The main aim of this project is to find the best performance and deformation limit of the wing on
different Mach numbers. This project is completely done by numerical methods of designing the wing using
CATIA and flow properties in Computational Fluid Dynamics (CFD) method. Finally, the structural analysis for
deformation is analysed in ANSYS. The analytical approach of fluid-structure interaction over an Aircraft wing
is complex.
FSI, CATIA, ANSYS, Aero-elasticity, NASA.
[1]. T. Sai Kiran Goud, Sai Kumar A, Dr S Srinivasa Prasad, "Analysis of Fluid-Structure Interaction on an
Aircraft Wing" [5]. B. Nagaraj Goud, G. Sai Sathyanarayana, S. Shailesh Babu, T B S Rao "Dynamic aero elastic (flutter) instability characteristics of an aircraft wing" MRCET, Hyderabad.
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Gary C. Cheng, Robert Nichols, Kshitij D. Neroorkar |
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Review and Assessment of Turbulence Transition Models |
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Turbulent boundary layer transition can greatly affect flow characteristics such as skin friction,
heat transfer, pressure loads, and boundary layer separation point. Accurate computation of such effect is vital
to the design of components and vehicles subjected to turbulent transition flows. In this paper we report our
review of the existing boundary layer transition models, selection of the boundary layer transition models most
appropriate for the existing Reynolds-averaged Navier-Stokes flow solvers, and implementation and evaluation
of the selected transition models with some benchmark test cases, ranging from subsonic to hypersonic flows.
The objective of this assessment study is not intended..................
Turbulence models, turbulence transition, CFD, flat plate, hypersonic cylindrical cone, turbine
cascade
[1]. A. M. O. Smith, "Transition, Pressure Gradient and Stability Theory," Douglas Aircraft Co. Rept.
ES26388, El Segundo, California, 1956.
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Hyun-Seop Shin |
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Experimental Evaluation of Fatigue Performance of Steel Grid Composite Deck Joints |
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The steel grid composite deck is a composite structure made of a concrete slab disposed over a steel
grid. The joints of the deck segments precast with regular width can be designed by means of lap-spliced rebar or
mechanical connection composed of concrete shear key and bolts. This study intends to evaluate comparatively the
fatigue performance with respect to the type of joint based upon the results of fatigue tests conducted on deck
specimens equipped with such joints. The evaluation reveals that there is practically no change in the stiffness regardless of the type of joint even after 2 million loading cycles and that the safety and serviceability are secured under cyclic loading since the maximum crack widths remained below the allowable values. Composite deck, Joint, Mechanical connection, Lap-spliced rebar, Fatigue performance
[1]. C.J. Earls, T.R. Johnston, "Behavior of Field Splice Details in Precast Concrete-Filled Steel Grid
Bridge Deck", Journal of Bridge Engineering, Vol.9, pp.127-136, 2004.
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Lejla Odobasic |
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Early Museum as Symbol of National Identity |
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This paper traces the role of the museum as a tool in the formation of national identity, in
Bavarian kingdom, during the late eighteen and early nineteenth centuries. The importance of the museums in
Berlin and Munich, built under the rule of Ludwig I, is that they helped to forge the new museum typology that
were applied to other European cities with the same intent. The paper examines three museums from Munich
and Berlin: The Altes Museum, the Glyptothek and the Alte Pinakothek. It seeks to establish the relationship
between the content or the collection and the container or the building itself as well as the expression of this
phenomena into the architectural language.
Museum, Collective Identity, Civic Architecture, Nationalism, Cultural Buildings
[1]. Anderson, Benedict R. O'G. Imagined Communities. 1st ed. London: N.p., 1982. Print.
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Preetha J, Akshatha B C, Karthik L, Vivekanand S Gogi |
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Study and Analysis of Energy Utilization in Casting and Forging Industry |
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Energy audit is a methodology which is used to reduce the energy consumption by the system. The
foundry industries are the most energy consuming systems in India. The objective of this research is to minimize
the energy utilization in the company by using energy audit technique. It was found that induction furnace is the
major problem, which made the system to consume more energy. The experimental study was conducted to
optimize the wall thickness of the furnace in order to increase the efficiency of the furnace using ANSYS. As
the thickness increased from 0.200m to 0.300m the efficiency of the furnace also increased from 49.40% to
54.70% with energy utilization cost reduction of Rupees 1592, considering 8 hour per day operation.
Energy audit, Foundry industry, Induction furnace, Efficiency analysis, ANSYS software.
[1]. SangmeshBhalke, GaneshChate, AnupamaKallol, SadanandHum, Barwadi and MdRiyaz, "Energy
Auditing of Foundries", an international journal of advanced engineering and applied science, ISSN
2320–3927, 20th july 2015.
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Nurhayati, Nashrullah Chatib, Purwoharjono |
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Hourly Groundwater Modelling In Tidal Lowlands Areas Using Extreme Learning Machine-Particle Swarm Optimization |
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The Information groundwater levels are very important in the management of tidal lowland,
especially for food crop farming. This study aims to perform modelling groundwater levels using Extreme
Learning Machine (ELM) paralleled with the Particle Swarm Optimization (PSO). PSO is used to set the value
of the input weights and hidden biases on ELM methods in order to improve the performance of the method
ELM. Groundwater levels are modelled is hourly groundwater level at tertiary block. Data input for modelling
is the water level in the channel, rainfall and temperature. Results of ground water level predictions using ELMPSO
is better than predictions of groundwater levels using ELM. Based on these results, the ELM-PSO can be
used in predicting groundwater levels, so as to assist decision makers in determining water management
strategies and the determination of appropriate cropping pattern in tidal lowland.
Extreme learning machine, particle swarm optimization, tidal lowland, groundwater.
[1]. Nurhayati, Indratmo Soekarno, Iwan K. Hadihardaja and M. Cahyono, "The prediction of groundwater level on tidal lowland reclamation using extreme learning machine, "Journal of Theoretical and Applied Information Technology, vol. 56 (1), pp. 75–84, Oct. 2013.
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Tize k. J, aboubakar, tangka j |
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The Potential of Local Materials on The Manufacturing Cost of A Cylindrical Floating Digester To Produce Biogas |
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This work aims to study the impact of using local materials on the manufacturing cost of a cylindrical floating digester. Black basalt stones cut, several stones uncut and sheets have been chosen. During construction the gas tank is built from two types of metal. The black sheets of 15/10 and 8/10 obtained from ordinary metal drums of 200 L. The results show that a modified cylindrical digester gas tank float was built with stone. Its volume is 25m3, its diameter and height are respectively 3.2 m and 3.1 m. The biogas tank is capable of storing 9.8 m3 of this one. The average quantities of other materials like cut stones, various stones, sand are respectively 0.88, 0.62 and 0.484 ton/m3 digester. The use of sheet 8/10 recovered from metal drums is not appropriate. The financial evaluation shows that the construction work cost is approximately 52.000CFA/m3 digester. Using local materials reduces the cost of construction of a biogas unit.
Local materials, stone, sheets, digester, cost of construction, biogas
[1]. Aburas R., Hammad. M. A., Hiary S. E., Qousous S., Abu-Reesh I., 1995. Construction and operation of a demonstration biogas plant, problems and prospects. Energy Convers. Mgmr, 37: 611-614.
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Pooja Raj, Neethu Skariya, Anikha Babu, Reshma Jacob, Neethu Jo Vavachan |
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Implementation of A Multifunctional Smart Wheelchair |
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The project presents a multifunctional smart wheelchair for movement of disabled people along
with patient monitoring using Arduino. The wheelchair can move in left, right, forward and backward
directions. The movement is controlled by voice. Here voice is given to the mobile phone and it transmits the
corresponding data to microcontroller using bluetooth module. Microcontroller controls the movement of
wheelchair by controlling the DC motors interfaced with motor drivers. Patient monitoring is achieved by
temperature sensor and data is given to microcontroller. Whenever the temperature rises above the threshold
value, an alert message is sent to doctor's phone using GSM module. Along with this, obstacle detection is also
implemented using Ultrasonic sensors.
Arduino Uno, Bluetooth module, Obstacle detection, Temperature sensor, Voice Recognition
[1]. Mr. Khagendra Joshi, Mr. Virendra Gupta,Ms. Monika Gosavi,Mr. Sandip Wagh, "A Multifunctional
Smart Wheelchair", International Journal of Advanced Research in Electronics and Communication
Engineering (IJARECE) Volume 4, Issue 5, May 2015
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