The development of durable and cost effective high performance construction materials and systems is important for theeconomicwell being of a country mainly because the cost of civil infrastructure constitutes a major portion of the national wealth.To address the problems of deteriorating civil infrastructure, research is very essential on smart materials. This paper highlightsthe use of smart materials for the optimal performance and safe design of buildings and other infrastructures particularly thoseunder the threat of earthquake and other natural hazards. The peculiar properties of the shape memory alloys for smart structuresrender a promising area of research in this field.
Mr. V. P. Rajput , Prof. A. K. Gupta, Mr. N. N. Kulkarni, Mr. Pravin Mane
For a city to be productive it is vital that it has a very sound infrastructure and services .Cities play a vital role inpromoting economic growth and prosperity. The development of cities largely depends upon their physical, social, andinstitutional infrastructure. In this context, the importance of interurban transportation is paramount. Indian cities cannot afford tocater only to private cars and two-wheelers and there has to be a general recognition that policy should be designed in such a waythat it reduces the need to travel by personalized modes and boosts public transport system. This requires both an increase inquantity as well as quality of public transport and effective use of demand as well as supplyside management measures.
Prof. Avinash M. Patil, Mr.Rahul S. Pise, Mr. Sachin S. Asabe
The vortex tube is a device which generates separated flows of cold and hot gases from a single compressed gas source. The main part of a basic vortex tube is a hollow cylinder, in which compressed air or other fluids are injected tangentially. Theexits set at one or both ends of the tube allow hot and cold air to exhaust. As its performance is very low and in order to improve performance three innovative modification methods are explained in this paper. In the first method modifications are done in internal parts of vortex tube such as in nozzle intake, nozzle and added new part called a diffuser. Vortex tube developed with thesemodifications gives higher performance compared to conventional vortex tube. In second method new part called vortex generator which placed near the inlet of vortex tube and allows compressed gas to enter at different angles in vortex tube. Then performance parameters are evaluated. In third method hot tube of vortex tube is directly cooled by cooling jacket. Thenperformance is evaluated and compared to vortex tube without having cooling jacket. Out of three methods the vortex tube withmodification in nozzle intake, nozzle and with added diffuser proves to be more efficient than other two methods explained here.
Prof. S. V. Gawali, Aniket C. Ahire, Gaurav H. Agrawal, Krushna A. Dhakne
Energy demand is increasing rapidly and its generation rate is not so fast. Energy security is imperative for sustained growth of economy. In addition, the sources are limited hence; in future we will need to depend mostly on renewable energy sources. Here we have made an attempt to present how human energy can be utilised to lift water that can save a considerableamount of power energy.
The current paper work mainly focuses on the root canal obturation process, wherein rectangular dental pin is immersed in highly viscous fluid as Gutta-Percha (GP). The vibration assist is given to dental pin for better compaction. The vibratory strokes enable the Gutta-Percha to flow into lateral canals, achieving better lateral canal seal. It produces superior clinical outcomes by creating a more complete filling of the root canal space than other obturation method. The dental pin used is of stainless steel or Nickel-Titanium.Dental pin is assumed to be rectangular cantilever beam. Natural frequency of this cantilever beam in air is calculated by using Timoshenko's beam theory and by using FEM. As the Gutta-Percha is highly viscous creeping fluid i.e its Reynolds's is much less than one, so it is required to see whether the cantilever beam vibrates in Gutta-Percha or not and also the resonant natural frequency of dental pin in Gutta-Percha fluid by using FEM. The beam and fluid were simulated using 2D structural solid (plane 42) & contained fluid (fluid 79) element respectively. The natural frequency of cantilever dental pin in gutta-percha fluid is calculated analytically. It is observed that Ni-Tidental pin has more displacement as compared to steel.
S. V. Gawali, Amit S. Barse, Pravin D. Bhosale, Atul P. Kadam,
Abhijeet S. Shirgaonkar
The soot layer acts as a heat insulator for the tubes and shells of the boiler. With the deposits of soot, a lot of heat energy isnot able to be transfer to the water. This causes the boiler efficiency to be lowered. The device mainly used for blowing down thesesoot, is soot-blower. The blowing element of the Rotary Soot Blower remains in the boiler at all times. Saturated or superheatedsteam is used as blowing medium.Conventionally soot removal was done by chain and wheel arrangement. Now the system isautomated by electric motor and gear reduction with minimum power consumption. Further it is modified with design of cam andfollower to control spray of steam. This paper analyzes the soot blowers of two types i.e. Conventional chain operated and modified automated soot blower, mainly on the basis of steam consumption.
Mr. Asif G. Momin, Mr. FayazMaredia, Prof.Subim Khan
However, due to the long rolling cycle of cold continuous rolling process and the development of computer technology, the theoretical formulas, such as Bland-Ford, Stone and Karman etc, could be applied to online process control system of tandem cold rolling mill through mathematical treatments. In this paper, based on comprehensive consideration of elastic and plastic deformation of both rolled piece and work roll, an online rolling force model for tandem cold rolling mill has been developed through numerical integration method. The rolling force model has been applied to a 5-stand tandem cold mill, and the application shows that this model is accurate and able to meet the computation precision requirements.
Mechatronics can be defined as the integration of mechanical, electrical, and computer technologies into the design ofcomplex products. In the present work, a concept of Computer Based Automatic Security Gate operation was developed. Basedon the study of conventional security gate system, the proposed system was planned to yield faster and accurate service withautomatic recording of vehicle data. The entire operation is automatic and unmanned. The system consists of a number ofsubsystems namely sensory system for sensing the arrival of the vehicle, web camera based data acquisition system for recordingof vehicular data from the vehicle Registration Certificate (RC) in the form of image and controlled DC motor to perform“OPEN” and “CLOSE” operation of the gate. Appropriate software was developed to control the motor via computer. A workingmodel was developed, and its operational observation shows the effectiveness of the proposed system for real-time applications.
Prof. Pramod R. Wadate, Mr. Subim Khan, Mr. RanaRathod
The paper presents applications regarding of additive fabrication through the generic issue of Rapid also the investigation of computer-aided design and rapid prototyping technologies in design and manufacturing. The focus is on Rapid Prototyping (RP) of Shaft used for the transmission assembly. One of the most popular RP technology used worldwide is 3D printing (3DP). 3D printing technologies can be divided in the following groups: inkjet printing fused deposition modeling, polymer jetting and so on. In this paper the focus is on 3DP applications, mainly fused deposition modeling (FDM), to obtain in a rapid way, innovative tooling for thermoplastic (acrylonitrile butadiene styrene) parts manufacturing. This rapid tooling was made of composite materials. This work was developed at Design Tech Sys, Pune.
Jyoti Darekar, Prof. V. G. Raut, Prof. Harjeet Kaur
The LMS algorithm is used for the filter coefficient adjustment, which uses only current residual values and the numberof registers are evidently reduced and convergence speed is also much improved compared to existing methods by using FPGAfor FIR filter Structure. Most of digital signal processing (DSP) algorithm requires many multiplications. Many multipliers inhardware implementation will decrease the speed of operation, use more area for VLSI design, and also consume more powerconsumption. An implementation of least mean squared (LMS) adaptive filter using distributed arithmetic (DA) for filtercoefficient adjustment. Distributed arithmetic (DA) is a famous technique for hardware implementation of DSP algorithmwithout any multipliers. Coefficient-distributive DA is used instead of conventional DA because filter coefficient are varied bytime hence adder network and multiplexer structure is used in coefficient distributive DA. So the proposed LMS adaptive filterwill be miltiplierless and without lookup table. It includes for the application of echo cancellation in future and for improvethespeed.
Based on wavelet decomposition theory, an image source can be decomposed into different weight levels. Then, the bit streams with different weight are modulated by FH-OFDM system, which can give low frequency bits more protection with the help of hop frequency graphics design in FH_OFDM. A joint system combined with source coding and adaptive modulation method is studied to give the image bit streams with different subcarriers, which eliminates ISI in low frequency streams more effectively. Therefore, a better reconstruction image can be obtained at receiver. Simulation results indicate that the scheme withjoint source coding and adaptive modulation method can outperform the system without adaptive modulation in image quality.
Copying code fragments and then reuse by pasting with or without minor modifications or adaptations are common activities in software development. This type of reuse approach of existing code is called code cloning and the pasted code fragment (with or without modifications) is called a clone of the original . The area of clone detection (i.e., searching for duplicate fragments of source code) has received wide interest recently as indicated by numerous efforts in clone detection tool development . A clone detector must try to find pieces of code of high similarity in a system's source text. The main problem isthat it is not known beforehand which code fragments may be repeated. Thus the detector really should compare every possible fragment with every other possible fragment. Such a comparison is prohibitively expensive from a computational point of viewandthus, several measures are used to reduce the domain of comparison before performing the actual comparisons. Even after identifying potentially cloned fragments, further analysis and tool support may be required to identify the actual clones .
Pankaj Srivastava, Gagan Kant Tripathi,Neeraj K. Jaiswal
First-principles calculations within the local spin-density approximation have been used to investigate the electronic properties of chlorine adsorbed armchair born nitride nanoribbons (aBNNRs). The sensing was investigating by band structure. Boron nitride nanoribbons are randomly arrangement of the adsorption of chlorine one edge or both edge the comparing results ofbare boron nitride nanoribbons. It is revealed that presence of chlorine has a profound effect on the electronic properties of aBNNRs. BaresaBNNRs are non magnetic semiconductor in natures whereas chlorine adsorption turns them semiconductingirrespective of adsorption site. Further, the negative differential resistance (NDR) has been observed in bare ribbons which disappear upon the chlorine adsorption.