Abstract
Micro-electric discharge machining is a non-conventional electrothermal process used to produce microfeatures with precision and accuracy on difficult-to-cut materials. Efforts are made all over the globe for making the µ-EDM process robust for application through optimization. An attempt has been made to optimize the machining parameters of µ-EDM process using JAYA, teaching-learning-based optimization and novel multi-objective optimization techniques. To assess the performance of these algorithms, the results are compared with particle swarm optimization technique. The work focused on drilling of high-aspect-ratio microholes using brass electrode of 290 µm on Stainless Steel 317L (SS317L) as base material and deionized water as dielectric in an advanced EDM drill machine while minimizing surface roughness and overcut simultaneously. Optimum condition was produced at pulse-on time of 3.0776 µs, current of 1 A, servo voltage of 3 V and gap voltage of 30 V. JAYA algorithm produced optimum condition in a smaller number of generations compared to TLBO and PSO. Results showed that JAYA, TLBO and PSO are effective tools to obtain optimum condition for input parameters.
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Abbreviations
- EDM:
-
Electric discharge machining
- µ-EDM:
-
Micro-EDM
- I p :
-
Current (A)
- T on :
-
Pulse-on time (µs)
- SV:
-
Servo voltage (V)
- GV:
-
Gap voltage (V)
- SOO:
-
Single-objective optimization
- TLBO:
-
Teaching-learning-based optimization
- OC:
-
Overcut (µm)
- SR:
-
Surface roughness (µm)
- ANOVA:
-
Analysis of variance
- PSO:
-
Particle swarm optimization
- RSM:
-
Response surface methodology
- MOO:
-
Multi-objective optimization
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Acknowledgements
Authors convey their appreciation to S.N.R.M. EDM Drill works, Balanagar, Hyderabad, for valuable assistance and support in carrying out experiments. Sincere appreciation to ARCI Balapur, Hyderabad, for allowing to use their facilities. Finally, authors acknowledge the support of all faculty and students who were involved in direct or indirect completion of research work.
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Rajashekar, V., Yeole, S.N. (2022). Multi-objective Optimization of Machining Parameters in µ-EDM Drilling of SS317L Using Novel JAYA and TLBO Algorithms. In: Govindan, K., Kumar, H., Yadav, S. (eds) Advances in Mechanical and Materials Technology . EMSME 2020. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-2794-1_115
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