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Chandra Mohan Reddy, G.
- Numerical Studies on the Effect of Various Parameters on Wrinkling in Deep Drawing of Cylindrical Cups
Abstract Views :271 |
PDF Views:1
Authors
Affiliations
1 Department of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
2 Department of Mechanical Engg., JNTU College of Engg., Hyderabad, IN
1 Department of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
2 Department of Mechanical Engg., JNTU College of Engg., Hyderabad, IN
Source
Manufacturing Technology Today, Vol 15, No 7 (2016), Pagination: 3-14Abstract
Deep drawing is the process of converting a blank into cup shaped articles like kitchen sinks, utensils, fountain pen caps etc. Wrinkles and fracture are the major defects in deep drawn products. Wrinkles occur at flange as well as the sidewalls of a deep drawn cup. The main reason for wrinkles is inadequate blank holding force. However excessive blank holding force results in fracture. The aim of this work is to arrive at optimum blank holding force in order to produce wrinkle free products. In this work numerical simulations are conducted by considering five different parameters namely punch radius, die radius, clearance, coefficient of friction and Punch diameter using finite element explicit solver LSDYNA. Modeling of the set up is done using hyper mesh. In this work simulations are carried out as per L-27 orthogonal array suggested by Taguchi. A combination of finite element method and Taguchi analysis is used to determine the influence of process parameters in deep drawing.Keywords
Deep Drawing, Blank Holding Force, Wrinkling, Taguchi Approach, LSDYNA.- Experimental Investigation on Friction Stir Welding of AA 6082 Alloy Using Taguchi Technique
Abstract Views :146 |
PDF Views:0
Authors
P. V. R. Ravindra Reddy
1,
P. Radhakrishna Prasad
1,
G. Chandra Mohan Reddy
1,
A. Sarotham Reddy
1,
K. Srikanth
1
Affiliations
1 Dept. of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
1 Dept. of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
Source
Manufacturing Technology Today, Vol 11, No 9 (2012), Pagination: 5-10Abstract
Friction Stir Welding (FSW) is a solid state welding process in which the heat for welding is produced by the relative motion between the tool and the two interfaces being joined. In this present study, AA-6082 alloy is friction stir welded for different combination of tool rotation speed and tool feed. Here a cylindrical tapered tool along with a profiled probe is rotated and fed at a constant traverse rate in to the joint. Taguchi technique is used to design the experiments. Total four experiments are conducted. The UTS and hardness for all four welded parts are measured by UTM and Vickers hardness tester respectively. Analysis is done and the optimum parameters are obtained and presented.Keywords
Friction Stir Welding, Orthogonal Arrays, Taguchi, ANOVA, AA-6082.- Analysis of the Effect of Silicon and Copper on the Mechanical Properties of Grey Cast Iron Using Taguchi Method
Abstract Views :186 |
PDF Views:0
Authors
Affiliations
1 Dept of Mech. Engg., CBIT, Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
1 Dept of Mech. Engg., CBIT, Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
Source
Manufacturing Technology Today, Vol 10, No 8 (2011), Pagination: 25-30Abstract
Cast iron can be used to produce varied products ranging from basic components in daily life to complex engine blocks of automobiles. This flexibility is achieved in cast iron by the process of alloying, where the properties of cast iron changes tremendously with addition of alloys. In this work, the significance and contribution of the effect of copper and silicon on mechanical properties of grey cast iron is studied using Taguchi method. An L-4 orthogonal array is selected for design of experiments and ANOVA is carried out to find out relative significance of copper and silicon on mechanical properties. The micro structural examination is also done to support the results obtained from ANOVA.Keywords
Orthogonal Arrays, Taguchi, ANOVA, Cast Iron.- Effect of Process Parameters on Weld Bead Geometry in Submerged Arc Welding Process-A Screening Test Using Orthogonal Arrays
Abstract Views :157 |
PDF Views:0
Authors
Affiliations
1 Dept. of Mechanical Engg., Chaitanya Bharathi Institute of Technology (CBIT), Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
3 Dept. of Mechanical Engg, Osmania University College of Engg., Osmania University, Hyderabad, IN
1 Dept. of Mechanical Engg., Chaitanya Bharathi Institute of Technology (CBIT), Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
3 Dept. of Mechanical Engg, Osmania University College of Engg., Osmania University, Hyderabad, IN
Source
Manufacturing Technology Today, Vol 10, No 2 (2011), Pagination: 19-24Abstract
Submerged arc welding (SAW) is one of the important welding processes used for welding thick blocks. Since arc in this welding is submerged under the blanket of granular fusible flux, the bead cannot be seen while welding. Hence all parameters such as arc voltage, welding current, carrier speed, electrode feed rate, nozzle to plate distance and the gap between plates etc. are to be preset. So, the effect of the parameters on the bead geometry is to be found out for which a number of experiments are to be carried out. Hence, in this work, to reduce the number of experiments a screening test is initially conducted, using Taguchi Technique. Open circuit voltage (OCV), wire feed rate (WFR), carrier speed (CS) and nozzle to plate distance (NPD) are chosen as input parameters and the reinforcement, width and penetration of the weld bead are taken as output parameters. L8 orthogonal array is selected, the factors are assigned and experiments are carried out. Column effect method is used to find the most effective parameters on bead characteristics.Keywords
Submerged Arc Welding, Weld Bead, Orthogonal Array (OA), Column Effect Method.- Parameter Design for TIG Welding of AL-65032 Alloy Using Taguchi Technique
Abstract Views :148 |
PDF Views:0
Authors
G. Haragopal
1,
P. V. R. Ravindra Reddy
1,
G. Chandra Mohan Reddy
2,
V. V. Satyanarayna
3,
J. V. Subrahmanyam
4
Affiliations
1 Dept. of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
3 Sagar Institute of Technology, Chevella, Hyderabad, IN
4 Vasavi College of Engg., Ibrahimbagh, Hyderabad, IN
1 Dept. of Mechanical Engg., CBIT, Gandipet, Hyderabad, IN
2 Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad, IN
3 Sagar Institute of Technology, Chevella, Hyderabad, IN
4 Vasavi College of Engg., Ibrahimbagh, Hyderabad, IN