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Jeyanthi, S.
- A Comparative Study between Emg Biofeedback Facilitated Exercise and Exercises alone on Recovery Rate of Quadriceps Femoris Muscle Strength Following Anterior Cruciate Ligament Reconstruction
Abstract Views :503 |
PDF Views:0
Authors
Affiliations
1 Amar Jyoti Institute of Physiotherapy, Delhi, IN
2 Consultant Ortho Surgeon, L. K. M. Hospital, Erode, IN
3 Nandha College of Physiotherapy, Erode, IN
1 Amar Jyoti Institute of Physiotherapy, Delhi, IN
2 Consultant Ortho Surgeon, L. K. M. Hospital, Erode, IN
3 Nandha College of Physiotherapy, Erode, IN
Source
Indian Journal of Physiotherapy & Occupational Therapy-An International Journal, Vol 8, No 2 (2014), Pagination: 230-235Abstract
Background: The pupose of this study was to investigate the efficacy of electromyography-biofeedback (EMG-B) on quadriceps muscle strength after Anterior cruciate ligament reconstruction.
Method: The patients were randomly divided into two groups each consisting of 20 subjects. For the control group, a classical exercise program was given and the experimental (biofeedback) group received five sessions of EMG-B application every week for 2 weeks postoperatively, inaddition to classical exercise programe. EMG electrical activity values of vastus medialis obliques (VMO), and vastus lateralis (VL) and Lysholm knee score were measured postoperatively on the 3rd and 14th day.
Results: When Lysholm knee scores on the 3rd and 14th day were compared in the control and biofeedback groups there was a statistically significant difference in favour of the biofeedback group (p<0.01).
Conclusions: Our results showed that EMG-B was an effective treatment modality in improving quadriceps muscle strength after Anterior cruciate ligament reconstruction surgery.
Keywords
Electromyography, Biofeedback, Anterior Cruciate Ligament Reconstruction
- Smart Home:Renewable Energy Management System for Smart Grid with Embedded System
Abstract Views :158 |
PDF Views:1
Authors
Affiliations
1 Jayaram College of Engineering & Technology, Trichy, IN
2 Department of EEE, Jayaram College of Engineering & Technology, Trichy, IN
3 Department of CSE, PSNA College of Engineering & Technology, Dindigul, IN
4 Department of EIE, R.V.S College of Engineering & Technology, Dindigul, IN
1 Jayaram College of Engineering & Technology, Trichy, IN
2 Department of EEE, Jayaram College of Engineering & Technology, Trichy, IN
3 Department of CSE, PSNA College of Engineering & Technology, Dindigul, IN
4 Department of EIE, R.V.S College of Engineering & Technology, Dindigul, IN
Source
Programmable Device Circuits and Systems, Vol 4, No 2 (2012), Pagination: 64-70Abstract
Increasing complexity of power grids, growing demand, and requirement for greater reliability, security and efficiency as well as environmental and energy sustainability concern continue to high light then need for a quantum leap in harnessing communication and information technologies. This leap toward a "smarter" grid is widely referred to as "smart grid". A smart grid can help us reach the goal of clean air and energy independence by utilizing renewable power such as wind and solar energy. In earlier a real time, massive, online, multi-time frame simulation is proposed as a means for building a common vision of smart grid functions. A massive simulation will include hundreds of participants that play roles of reliability coordinators, transmission operators, distribution operators, power plant operators, and substation operators. In this paper critically reviews the reliability impacts of major smart grid resources such as renewable, demand response and storage. A Smart Meter is designed via ISM band communication to develop a smart grid. These highly visible drills can demonstrate how the new smart grid systems, people, and processes can all work together economically and reliably. We can get low cost, safe, and easily configurable simulations instead of waiting for expensive and hard wired deployments.Keywords
Smart Meter, Embedded Microcontroller, ISM Band Communication.- Study of Sound Absorption Properties on Rigid Polyurethane Foams using FEA
Abstract Views :179 |
PDF Views:0
Authors
Affiliations
1 School of Mechanical and Building Sciences, VIT University, Chennai - 600127, Tamil Nadu, IN
1 School of Mechanical and Building Sciences, VIT University, Chennai - 600127, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 33 (2016), Pagination:Abstract
Objective: The range of raw material used for the manufacture of Polyurethane using Polyol has grown enormously during the past fifty years. A wide range of products is now available, which allows the researchers to produce, collectively known as Polyurethane Foams as Porous Material. This paper examines the sound absorption properties of porous material from the view point of the manufacturer by the experimental and analysis way. Method/Analysis: In this experimental study, finite element method is well established in estimating acoustic transmission loss or sound absorption coefficient of a porous material. Impedance tube is used to measure the acoustic impedance of a sound absorbing porous material, with acoustic source at one end and an acoustic porous material. That is polyurethane foam at other end. There are two common methods used to measure the impedance value of the porous material. The first method involves a moveable microphone that transverses along the impedance tube and the second method is named as “transfer function” or “two-microphone”, the two microphone method is followed in this section. In this study, a 3D impedance tube is modelled using finite element software and the results will be compared with experimental data. Finding: The effort for this study determines a straight forward route to the production of Rigid Polyurethane foams through a direct reaction process. This system has potentially wide relevance as polyurethane foams. Here, an initial study has shown that using different way to calculate the sound absorption coefficient of a material, either by experimental way or by analysis using FEA software ansys. Application/ Improvement: Besides much other application, rigid polyurethane foam is used as acoustic layer in automobile industries, thermal insulation and as energy absorber medium in front bumper of auto motives. Hence by comparing the sound absorption coefficient value of the foam by the both experimental and analysis method we can improve the understanding level and efficiency of the rigid polyurethane foam.Keywords
3D Modelling, Finite Element Analysis, Impedance Tube, Rigid Polyurethane Foam, Sound Absorption Coefficient.Full Text
- Quasi Static Axial Crushing of Foam Filled Thin Walled Circular Tubes
Abstract Views :145 |
PDF Views:0
Authors
Affiliations
1 School of Mechanical and Building Sciences, VIT University, Chennai - 600127, Tamil Nadu, IN
1 School of Mechanical and Building Sciences, VIT University, Chennai - 600127, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 33 (2016), Pagination:Abstract
Objective: Thin walled circular tubes are used in many practical situations to absorb impact energy, the axial impact of these thin-walled tubes absorb deformation energy at nearly constant load resulting in high energy absorption. This paper investigates the dynamic progressive buckling response of empty and foam filled tubes under quasi static loading conditions and validation of results using non linear finite element code LS-DYNA. Method/Analysis: In the experimental study, aluminium 6063-T5 thin walled circular tubes are integrated with low density polyurethane foam and quasi static loading is conducted on both empty and foam filled tubes to determine the buckling response and deformation shape under impact. The load-displacement graph obtained is used to determine the energy absorbed by the thin walled structure. The numerical analysis of a similar loading condition is simulated using LS-DYNA and a systematic comparison between the finite element model and experimental deformed shapes, load-displacement, number of folds, energy absorption is done. Findings: The integration of low density foam in empty aluminium tube increased the energy absorption by 1.4% with an additional stability in the deformation and satisfactory agreements were achieved between the finite element model and experimental deformed shapes, load-displacement, number of folds, energy absorption with an error less than 15%. Applications/Improvements: One potential application of polyurethane foams is that it can be used as reinforcement in energy absorbing structures, hence an understanding of the response of the system in different loading condition is necessary to improve the crashworthiness. The experimental results are correlated to FEM to reduce the time spend on experimental testing.Keywords
Dynamic Progressive Buckling, Energy Absorption, Foam Filled Tubes, Finite Element Method, LS-DYNAFull Text
- Characterisation of Hollow Glass Fibre Reinforced Vinyl-Ester Composites
Abstract Views :162 |
PDF Views:0
Authors
Affiliations
1 School of Mechanical and building Science (SMBS), VIT University, Chennai Campus, Chennai – 600127,Tamil Nadu, IN
1 School of Mechanical and building Science (SMBS), VIT University, Chennai Campus, Chennai – 600127,Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 47 (2016), Pagination:Abstract
Objectives: The core objective of this characterization study is to clarify the effect of reniforement and the geometry of the reinforcement on the mechanical behavior of the vinyl-ester polymer composites. Methods: In this study, Polymer Matrix Composites (PMC) reinforced with both solid glass fiber (E glass) and hollow glass fiber (H glass) is prepared using traditional hand layup technique. Mechanical characterizations are carried out to find the effect of reinforcement on the tensile, compressive, flexural strength and impact resistance of the composites using Universal Testing Machine (UTM) and Charpy Impact. Findings: The characterization study on the mechanical behavior revealed that the hollowness of the fibre reinforcement significantly increased the strength and impact energy absorption capacity of the Hollow glass (H glass) fiber reinforced vinyl ester composites when compared to solid glass (E glass) fiber reinforced vinylester composites. Applications: Be a light weight and high strength materials, Hollow glass reinforced vinyl ester polymer composite can be used in various engineering applications particularly aircraft industry.Keywords
Composites, Hollow Glass Fiber, Mechanical Characterization, Solid Glass Fiber, Vinylester.Full Text
- Development of Automated Braking System for Collision Avoidance of Vehicles
Abstract Views :291 |
PDF Views:122
Authors
Affiliations
1 School of Mech. and Building Sciences, VIT University, Chennai, IN
1 School of Mech. and Building Sciences, VIT University, Chennai, IN
Source
International Journal of Vehicle Structures and Systems, Vol 10, No 2 (2018), Pagination: 93-97Abstract
The main objective of this paper is to develop an automated braking system to avoid frontal collision of the vehicle due to driver inattentiveness. The working model comprises of automated braking system which includes ultrasonic sensor, bike brake system, high torque motor, microcontroller, motor driver, battery, double acting cylinder and solenoid valves. An algorithm is proposed for automated braking system. The proposed working model is validated with experimental results. The ultrasonic sensor is validated for distance measurement and the sensor predicts the distance with an error of 3.31%.Keywords
Ultrasonic Sensor, Automatic Braking, Collision Avoidance, Distance Measurement, Automotive Vehicles.Full Text
References
- R. Bishop. 2000. A survey of intelligent vehicle application worldwide, Proc. IEEE Intelligent Vehicle Symp., 25-30. https://doi.org/10.1109/IVS.2000.898313.
- W.J. Fleming. 2008. New automotive sensors, IEEE Sensor J., 8(11), 1900-1921. https://doi.org/10.1109/JSEN.2008.2006452.
- R. Anbalagan and J. Jancirani. 2015. Experimental investigation of vacuum brake system performance in light commercial vehicles, Int. J. Vehicle Structures & Systems, 7(1), 43-46. http://dx.doi.org/10.4273/ijvss.7.1.09.
- P. Sevvel, I.S.S. Thangaiah, S.M. Mukesh and G.M. Anif. 2015. Laboratory scale testing of thermoelectric regenerative braking system, Int. J. Vehicle Structures & Systems, 7(4), 157-160. http://dx.doi.org/10.4273/ijvss.7.4.08.
- A. Carullo and M. Parvis. 2001. An ultrasonic sensor for distance measurement in automotive applications, IEEE Sensors J., 1(2), 143-147. https://doi.org/10.1109/JSEN.2001.936931.
- H. Yoshida, S. Awano, M. Nagai and T. Kamada. 2006. Target following brake control for collision avoidance assist of active interface vehicle, Proc. SICE-ICASE Int. Joint Conf., 18-21. https://doi.org/10.1109/SICE.2006.314777.
- Y. Jia and D. Cebon. 2016. Field testing of a cyclist collision avoidance system for heavy goods vehicles, IEEE Trans. on Vehicular Tech., 65(6), 4359-4367. https://doi.org/10.1109/TVT.2016.2538801.
- F. Bu and H.S. Tan. 2007. Precision stopping control ofautomatedbus with pneumatic braking system, IEEE Trans. on Control Systems Tech., 15(1), 53-64. https://doi.org/10.1109/TCST.2006. 883238.
- J. Majchrzak, M. Michalski and G. Wiczynski. 2009. Distance estimation with a long-range ultrasonic sensor system, IEEE Sensors, 9(7), 767-773. https://doi.org/10.1109/JSEN.2009.2021787.
- T. Schlegl, T. Bretterklieber, M. Neumayer and H. Zangl. 2011. Combined capacitive and ultrasonic distance measurement for automotive applications, IEEE Sensors, 11(11), 2636-2642. https://doi.org/10.1109/JSEN.2011.2155056.
- L. Alonso, J. Perez-Oria, M. Fernandez, C. Rodriguez and J. Arce. 2012. Genetically optimized controller for urban traffic emergency braking system based on ultrasonic sensors, Proc. 7th IEEE Conf. Industrial Electronics and Applications, Singapore. https://doi.org/10.1109/ICIEA.2012.6360688.
- F. Diederichs, T. Schüttke and D. Spath. 2015. Driver intention algorithm for pedestrian protection and automated emergency braking systems, Proc. IEEE 18th Int. Conf. Intelligent Transportation Systems, Canary Islands, Spain.