Linton, Malaysia
Linton, Malaysia

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Suresh P.,Salem College | Venkatesan R.,Salem College | Elango N.,Kolej University Linton | Sathiyamoorthy V.,Mahendra Engineering College
Strojniski Vestnik/Journal of Mechanical Engineering | Year: 2014

This research paper attempts to investigate the optimum values of the major intervening parameters in micro-Electric Discharge Machining (microEDM) of Stainless Steel (SS) 316L. Experiments are conducted using a 400 micrometre brass electrode. The discharge current, pulseon time and pulse-off time with three levels are selected as significant intervening parameters. The Taguchi method is initially applied to determine the optimum process parameters and the number of experiments required to model the responses. The response-surface methodology (RSM) is applied to correlate between intervening parameters, and the selected objectives to maximize the material removal rate (MRR) and to minimize the tool wear rate (TWR) in the machining of SS 316 L. The mathematical model obtained from RSM is used as a fitness function to multi-objective optimization using a genetic algorithm (GA). The results reveal that the resulting optimal intervening parameters improve the chosen objectives significantly. The confirmation results prove that the better developed mathematical model yields deviate within 5% of the experiment. © 2014 Journal of Mechanical Engineering. All rights reserved.

Sathiyamoorthy V.,Mahendra Engineering College | Sekar T.,Salem College | Suresh P.,Salem College | Vijayan R.,Salem College | Elango N.,Kolej University Linton
Journal of Engineering Science and Technology | Year: 2015

This paper attempts to optimize the predominated machining parameters in Electro Chemical Machining (ECM) of AISI 202 Austenitic stainless steel using Response Surface Methodology (RSM). The chosen material has been used in railway rolling stock. The selected influencing parameters are applied voltage, electrolyte discharge rate with three levels and tool feed rate with four levels. Thirty six experiments were conducted through design of experiments and central composite design in RSM was applied to identify the optimum conditions which turn into the best Material Removal Rate (MRR) and Surface roughness (SR). The experimental analyses reveal that applied voltage of 16 V, tool feed rate of 0.54 mm/min and electrolyte discharge rate of 10 L/min would be the optimum values in ECM of AISI 202 under the selected conditions. For checking the optimality of the developed equation, MRR of 298.276 mm3/min and surface roughness Ra of 2.05 µm were predicted at applied voltage of 12.5 V, tool feed rate of 0.54 mm/min and electrolyte discharge rate of 11.8 L/min with composite desirability of 98.05%. Confirmatory tests showed that the actual performance at the optimum conditions were 291.351 mm3/min and 2.17 µm. The deviation from the predicted performance is less than 6% which proves the composite desirability of the developed models for MRR and surface roughness. © School of Engineering, Taylor’s University

Natarajan E.,Kolej University Linton | Onubogu N.O.,Kolej University Linton
Advances in Intelligent and Soft Computing | Year: 2012

The Coanda effect, invented by Henri Marie Coanda is an interesting phenomenon in fluid mechanics. The basics of the Coanda effect is based on the property of a jet flow to attach itself to a nearby surface and to remain attached even when the surface bends away from the initial jet direction. This effect has been applied in many areas since 1960. In the recent years, researches have been initiated towards the application of Coanda effect in robots. This paper is focused on the utilization of Coanda effect in the field of robotics. The research that the authors are carrying out in this area is also addressed at the end of this paper. © 2012 Springer-Verlag GmbH Berlin Heidelberg.

Azman M.A.,University of Technology Malaysia | Faudzi A.A.M.,University of Technology Malaysia | Mustafa N.D.,University of Technology Malaysia | Osman K.,University of Technology Malaysia | And 2 more authors.
Jurnal Teknologi (Sciences and Engineering) | Year: 2014

The purpose of this paper is to design a controller that can control the position of the cylinder pneumatic stroke. This work proposes two control approaches, Proportional-Integral-Derivative Fuzzy Logic (Fuzzy-PID) controller and Proportional-Derivative Fuzzy Logic (PD-Fuzzy) controller for a Servo-Pneumatic Actuator. The design steps of each controller implemented on MATLAB/Simulink are presented. A model based on position system identification is used for the controller design. Then, the simulation results are analyzed and compared to illustrate the performance of the proposed controllers. Finally, the controllers are tested with the real plant in real-time experiment to validate the results obtained by simulation. Results show that PD-Fuzzy controller offer better control compared to Fuzzy-PID. A Pneumatic Actuated Ball & Beam System (PABBS) is proposed as the application of the position controller. The mathematical model of the system is developed and tested simulation using Feedback controller (outer loop)-PD-Fuzzy controller (inner loop). Simulation result is presented to see the effectiveness of the obtained model and controller. Results show that the servo-pneumatic actuator can control the position of the Ball & Beam system using PD-Fuzzy controller. © 2014 Penerbit UTM Press. All rights reserved.

Nordin I.N.A.M.,University of Technology Malaysia | Faudzi A.A.M.,University of Technology Malaysia | Razif M.R.M.,University of Technology Malaysia | Natarajan E.,Kolej University Linton | And 2 more authors.
Jurnal Teknologi (Sciences and Engineering) | Year: 2014

Over recent years, studies on soft mechanism are rapidly being paid to attention especially in pneumatic actuator field. A good actuator should be able to provide sufficient force and flexibility in movement, hence bending motion is a vital criteria needed in soft robotic actuation. In this paper, a solution to soft bending pneumatic actuator is proposed in which several patterns fiber weave designs are introduced. The objectives of the simulations is to investigate the different weave patterns combination of fiber reinforced actuator models that yields the best bending characteristics and its relation to the contraction or extension characteristics shown by single weave pattern actuator models. From the results, when two patterns of fiber weave were attached together to form a sleeve, significant bending were obtained from most of the models simulated. Large bending resulted from combined two patterns fiber weave models were achieved when maximum contraction and extension characteristics exhibited by both fiber weave patterns. © 2014 Penerbit UTM Press. All rights reserved.

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