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LIST OF PUBLICATIONS
Kamal Jangra, Sandeep Grover, Aman Aggarwal (2011). Digraph and matrix method for the
performance evaluation of carbide compacting die manufactured by wire EDM.
International Journal of Advance Manufacturing Technology, 54 (5-8), 579-591.
Kamal Jangra, Sandeep Grover, F.T.S., Chan, Aman Aggarwal (2011). Digraph and matrix
method to evaluate the machinability of tungsten carbide composite with wire EDM.
International Journal of Advance Manufacturing Technology, 56 (9-12), 959-974.
Jangra, K., Grover, S., Aggarwal, A. (2011). Machinability evaluation of tungsten carbide
composite with wire EDM. Journal of Manufacturing Technology Research, (3)(1-2).
Jangra, K., Grover, S., Aggarwal, A. (2011). Simultaneous optimization of material removal
rate and surface roughness for WEDM of WC-Co composite using grey relational analysis
along with Taguchi method. International Journal of Industrial Engineering
Computations, 2, 479-490.
Jangra, K., Grover, S., Aggarwal, A. (2010). Graph Theoretic Approach to Evaluate the
Effect of various Factors on Die Performance. 3rd International Conference on Advances in
Mechanical Engineering, January 4-6, S.V. National Institute of Technology, Surat, India.
Jangra, K., Grover, S., Aggarwal, A. (2011). Optimization of multi-characteristics in intricate
machining of WC-5.3%Co composite with WEDM using Taguchi, GRA and Entropy
Measurement method. International Journal of Machining and Machinability of Materials,
(Under Review).
Jangra, K., Grover, S., Aggarwal, A. (2011). Modelling and optimization of WEDM
parameters for WC-5.3%Co using Response Surface Methodology and Steepest Descent
method. Journal of Material Science and Technology, (Under review).
203
APPENDIX A
WIRE TOOL PATH TO GENERATE CAVITY IN DIE BLOCK
Figure 1A Die profile generated in WC-Co composite
(0: starting pt. of wire electrode; 1: finishing point of wire electrode)
Arrow direction shows the wire tool movement
204
APPENDIX B
ENTROPY MEASUREMENT FOR MACHINING CHARACTERISTICS
Table A: Value of mapping function we (x) [equation 7.11]
Sr. No. we (MRR) we (SR) we (AE) we (RoC)
1 0.142945 0.161621 0.145975 0.123612
2 0.212532 0.112885 0.123636 0.110016
3 0.166495 0.118932 0.270377 0.099482
4 0.14197 0.18957 0.161145 0.109523
5 0.200299 0.125466 0.169646 0.099665
6 0.140613 0.120708 0.221285 0.094251
7 0.130647 0.230005 0.125955 0.104059
8 0.121875 0.161804 0.120952 0.098852
9 0.218211 0.09358 0.116005 0.091956
10 0.078252 0.208114 0.101296 0.219197
11 0.125894 0.113393 0.11737 0.252859
12 0.144404 0.086191 0.108594 0.142945
13 0.102141 0.152148 0.099059 0.216468
14 0.105869 0.110078 0.113243 0.161388
15 0.132812 0.098154 0.198145 0.155356
16 0.081732 0.2384 0.120869 0.158513
17 0.132748 0.103903 0.104938 0.143371
18 0.148454 0.095206 0.101663 0.138879
Sum 2.527893
2.520158
2.520152
2.520391
Normalized coefficient: S = 1/ (0.6487× 18) = 0.085641 (using equation 7.14)
Entropy of each machining characteristics:
ek = S × (sum we);
eMRR = 0.085641 × 2.527893 = 0.21649
eSR = 0.085641 × 2.520158 = 0.21583
eAE = 0.085641 × 2.520152 = 0.215829
eRoC = 0.085641 × 2.520391 = 0.21585