Electro-Discharge Machining Advanced Materials under Low Frequency Vibrations: Modeling, Application, and Outlook

Abstract

The material removal in Electro-Discharge Machining (EDM) occurs through the generation of high temperatures caused by intense electrical discharges, leading to the melting and vaporization of the workpiece and tool electrode. The ejected molten material solidifies in the dielectric liquid, forming debris that can significantly affect process accuracy, efficiency, productivity, and machinability if not effectively removed from the machining zone. The utilization of Low Frequency (LF) vibration (typically <1 kHz) to assist debris evacuation during Micro-EDM (µEDM) and EDM processes has emerged as a feasible solution. Moreover, the integration of powder into the dielectric medium (Powder mixed EDM, PMEDM) along with LF vibration presents an interactive approach to further enhance process performance. Despite its promise, the field lacks a unified understanding of LFV-EDM’s underlying mechanisms, systematic optimization frameworks, and clear pathways for industrial integration. This paper presents a comprehensive overview of research focusing on the influence of process parameters on key performance indicators such as Material Removal Rate (MRR), Electrode Wear Rate (EWR), surface roughness (Ra), and geometric accuracy in LF vibration-assisted µEDM and EDM. Various optimization methodologies, including statistical modeling, finite element analysis (FEA), computational fluid dynamics (CFD), and advanced techniques like Taguchi and artificial neural networks (ANN) employed in this field are extensively reviewed. Critical analysis of contradictory findings and material-specific responses is included. The review concludes with identified research gaps and prioritized future directions, including hybrid processes, advanced powder materials, and AI-driven optimization for LF- assisted µEDM and EDM processes. This work provides researchers with a consolidated knowledge base, a critical perspective on current limitations, and a prioritized agenda for future innovation, ultimately bridging the gap between laboratory research and scalable industrial application.

Keywords

Electrical Discharge Machining (EDM) / Low frequency vibration / Dielectric / Material removal rate (MRR) / Electrode wear rate (EWR) / Surface roughness (Ra)

Statement of the Use of Generative AI and AI-Assisted Technologies in the Writing Process

During the preparation of this manuscript, the authors used Deepseek website in order to improve the English language for some sentences. After using this service, the authors reviewed and edited the content as needed and take full responsibility for the content of the published article.

Author Contributions

Conceptualization H.E.-H. and M.E.-H.; Methodology H.E.-H.; Formal Analysis I.M.; Investigation I.M., H.E.-H. and M.E.-H.; Data Curation I.M. and H.E.-H.; Writing—Original Draft Preparation H.E.-H., Writing—Review & Editing I.M. and M.E.-H.; Visualization H.E.-H.; Supervision H.E.-H., Project Administration H.E.-H.

Ethics Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Not applicable.

Funding

This research received no external funding.

Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

References

[1] Ho KH, Newman ST. State of the Art Electrical Discharge Machining (EDM). Int. J. Mach. Tools Manuf. 2003, 43, 1287-1300. DOI:10.1016/s0890-6955(03)00162-7

[2] El-Hofy H. Advanced Machining Processes: Nontraditional and Hybrid Machining Processes, 1st ed.; McGraw-Hill Education: New York, NY, USA, 2005.

[3] Lauwers B, Klocke F, Klink A, Tekkaya AE, Neugebauer R, McIntosh D.Hybrid Processes in Manufacturing. CIRP Ann. 2014, 63, 561-583. DOI:10.1016/J.CIRP.2014.05.003

[4] El-Hofy H. Fundamentals of Machining Processes—Conentional and Nonconventional Processes, 3rd ed.; CRC Press: Boca Raton, FL, USA, 2019.

[5] Liao YS, Liang HW. Study of Vibration Assisted Inclined Feed Micro-EDM Drilling. Procedia CIRP 2016, 42, 552-556. DOI:10.1016/j.procir.2016.02.250

[6] Maher I, El-Hofy H, El-Hofy MH. Ultrasonic Vibration Assisted Electrical Discharge Machining and Micro-Electrical Discharge Machining: A Review. Mach. Sci. Technol. 2023, 27, 653-696. DOI:10.1080/10910344.2023.2263780

[7] Asmae T, Yasmina L, Pascal K. Study on the Electrical and Geometrical Parameters of Micro Electrical Discharge Machining. Micro Nanosyst. 2023, 15, 199-207. DOI:10.2174/1876402915666230606120945

[8] Yadav S, Sisodia N, Agarwal D, Singh RK, Sharma AK. Performance Analysis of Powder-Assisted Micro-Drilling Operation Using Micro-EDM. Proc. Inst. Mech. Eng. C J. Mech. Eng. Sci. 2024, 238, 7627-7639. DOI:10.1177/09544062241237423

[9] Kumar A, Kumar D, Singh NK. Fabricating Micro-Holes Through Micro-EDM Process and Their Circularity Testing BT—Recent Trends in Product Design and Intelligent Manufacturing Systems; Deepak BBVL, Bahubalendruni MVAR, Parhi DRK, Biswal BB,Eds.; Springer: Singapore, 2023; pp. 731-737.

[10] Jahan MP, Rahman M, Wong YS. A Review on the Conventional and Micro-Electrodischarge Machining of Tungsten Carbide. Int. J. Mach. Tools Manuf. 2011, 51, 837-858. DOI:10.1016/j.ijmachtools.2011.08.016

[11] Maity KP, Choubey M.A REVIEW ON VIBRATION-ASSISTED EDM, MICRO-EDM AND WEDM. Surf. Rev. Lett. 2018, 26, 1830008. DOI:10.1142/S0218625X18300083

[12] Xu J, Xia S, Yu P, Li M. Multi-Objective Parameter Optimization of Ultrasonic Vibration-Assisted Micro-EDM of Ti-6Al-4V Alloys. J. Vib. Control 2023, 30, 1818-1828. DOI:10.1177/10775463231171798

[13] Kalpakjian S, Schmid SR. Manufacturing Processes for Engineering Materials, 6th ed.; Pearson: London, UK, 2022.

[14] Jahan MP, Wong YS, Rahman M. Evaluation of the Effectiveness of Low Frequency Workpiece Vibration in Deep-Hole Micro-EDM Drilling of Tungsten Carbide. J. Manuf. Process. 2012, 14, 343-359. DOI:10.1016/j.jmapro.2012.07.001

[15] Prihandana GS, Mahardika M, Hamdi M, Mitsui K. Effect of Low-Frequency Vibration on Workpiece in EDM Processes. J. Mech. Sci. Technol. 2011, 25, 1231-1234. DOI:10.1007/s12206-011-0307-1

[16] Marashi H, Kai CP, Sarhan AAD, Maher I. The Enhancement of Die Sink EDM Machining Efficiency Incorporating Micro-Flakes of Graphite Powder. Arab. J. Sci. Eng. 2024, 49, 11787-11807. DOI:10.1007/s13369-024-09070-x

[17] Tzeng YF, Lee CY. Effects of Powder Characteristics on Electrodischarge Machining Efficiency. Int. J. Adv. Manuf. Technol. 2001, 17, 586-592. DOI:10.1007/s001700170142

[18] Marashi H, Jafarlou DM, Sarhan AAD, Hamdi M. State of the Art in Powder Mixed Dielectric for EDM Applications. Precis. Eng. 2016, 46, 11-33. DOI:10.1016/j.precisioneng.2016.05.010

[19] Wong YS, Lim LC, Rahuman I, Tee WM. Near-Mirror-Finish Phenomenon in EDM Using Powder-Mixed Dielectric. J. Mater. Process. Technol. 1998, 79, 30-40. DOI:10.1016/S0924-0136(97)00450-0

[20] Lin YC, Yan BH, Huang FY. Surface Modification of Al-Zn-Mg Aluminum Alloy Using the Combined Process of EDM with USM. J. Mater. Process. Technol. 2001, 115, 359-366. DOI:10.1016/S0924-0136(01)01017-2

[21] Chen YF, Lin YC. Surface Modifications of Al-Zn-Mg Alloy Using Combined EDM with Ultrasonic Machining and Addition of TiC Particles into the Dielectric. J. Mater. Process. Technol. 2009, 209, 4343-4350. DOI:10.1016/J.JMATPROTEC.2008.11.013

[22] Prihandana GS, Mahardika M, Hamdi M, Wong YS, Miki N, Mitsui K. Study of Workpiece Vibration in Powder-Suspended Dielectric Fluid in Micro-EDM Processes. Int. J. Precis. Eng. Manuf. 2013, 14, 1817-1822. DOI:10.1007/s12541-013-0243-3

[23] Liew PJ, Yan J, Kuriyagawa T. Carbon Nanofiber Assisted Micro Electro Discharge Machining of Reaction-Bonded Silicon Carbide. J. Mater. Process. Technol. 2013, 213, 1076-1087. DOI:10.1016/j.jmatprotec.2013.02.004

[24] Prihandana GS, Mahardika M, Hamdi M, Wong YS, Mitsui K. Effect of Micro-Powder Suspension and Ultrasonic Vibration of Dielectric Fluid in Micro-EDM Processes—Taguchi Approach. Int. J. Mach. Tools Manuf. 2009, 49, 1035-1041. DOI:10.1016/j.ijmachtools.2009.06.014

[25] Prihandana GS, Mahardika M, Hamdi M, Wong YS, Mitsui K. Accuracy Improvement in Nanographite Powder-Suspended Dielectric Fluid for Micro-Electrical Discharge Machining Processes. Int. J. Adv. Manuf. Technol. 2011, 56, 143-149. DOI:10.1007/s00170-011-3152-6

[26] Liew PJ, Yan J, Kuriyagawa T. Fabrication of Deep Micro-Holes in Reaction-Bonded SiC by Ultrasonic Cavitation Assisted Micro-EDM. Int. J. Mach. Tools Manuf. 2014, 76, 13-20. DOI:10.1016/j.ijmachtools.2013.09.010

[27] Kremer D, Lhiaubet C, Moisan A. A Study of the Effect of Synchronizing Ultrasonic Vibrations with Pulses in EDM. CIRP Ann. 1991, 40, 211-214. DOI:10.1016/S0007-8506(07)61970-2

[28] Talla G, Gangopadhyay S, Biswas CK. Effect of Powder-Suspended Dielectric on the EDM Characteristics of Inconel 625. J. Mater. Eng. Perform. 2016, 25, 704-717. DOI:10.1007/s11665-015-1835-0

[29] Talla G, Gangopadhyay S, Biswas CK. Influence of Graphite Powder Mixed EDM on the Surface Integrity Characteristics of Inconel 625. Part. Sci. Technol. 2017, 35, 219-226. DOI:10.1080/02726351.2016.1150371

[30] Mullya S, Karthikeyan G, Ganachari V. Simulation of Flow-Field and Debris Temperature Analysis in Micro-Electrical Discharge Milling Using Slotted Tools. Proc. Inst. Mech. Eng. B J. Eng. Manuf. 2022, 236, 1169-1180. DOI:10.1177/09544054211061934

[31] Marafona J, Chousal JAG. A Finite Element Model of EDM Based on the Joule Effect. Int. J. Mach. Tools Manuf. 2006, 46, 595-602. DOI:10.1016/J.IJMACHTOOLS.2005.07.017

[32] Xia S, Xu J, Yu P. Ultrasonic Vibration-Assisted µ-EDM Flow Field Numerical Simulation and Experiment Research. In Proceedings of the 2022 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO), Tianjin, China, 8-12 August 2022; pp. 212-216.

[33] Guo C, Luo L, Liang Z, Li H, Wang X, Xu B. Comparative Study of Ultrasonic Vibration-Assisted Die-Sinking Micro-Electrical Discharge Machining on Polycrystalline Diamond and Titanium. Micromachines 2024, 15, 434. DOI:10.3390/mi15040434

[34] Kunar S, Rajendra K, Raviteja D, Talib N, Rama Sree S, Reddy MS. Ultrasonic Vibration-Assisted Microwire Electrochemical Discharge Machining. In Hybrid Micromachining and Microfabrication Technologies; Wiley: Hoboken, NJ, USA, 2023; pp. 205-217; ISBN 9781394174959.

[35] Todkar AS, Sohani MS, Kamble GS, Nikam RB. Analysis of Metal Removal in Vibration Assisted Micro-EDM. Int. J. Eng. Res. Technol. 2013, 2, 2401-2412. DOI:10.17577/IJERTV2IS70722

[36] Choubey M, Maity KP, Sharma A. Finite Element Modeling of Material Removal Rate in Micro-EDM Process with and without Ultrasonic Vibration. Grey Syst. Theory Appl. 2020, 10, 311-319. DOI:10.1108/GS-11-2019-0047

[37] Nanimina AM, Abdul Rani AM, Ginta TL. Assessment of Powder Mixed EDM: A Review. MATEC Web Conf. 2014, 13, 04018. DOI:10.1051/matecconf/20141304018

[38] Nguyen HP, Ngo NV. Study on Effects of Low Frequency Vibration on Efficiency of Die Sinking Electrical Discharge Machining. Univers. J. Mech. Eng. 2019, 7, 330-335. DOI:10.13189/ujme.2019.070604

[39] Nguyen H-P, Pham V-D. Single Objective Optimization of Die- Sinking Electrical Discharge Machining with Low Frequency Vibration Assigned on Workpiece by Taguchi Method. J. King Saud Univ.—Eng. Sci. 2021, 33, 37-42. DOI:10.1016/j.jksues.2019.11.001

[40] Kumar S, Kumar S, Kumar S, Saini T. An Experimental Study of Low Frequency Vibration Assisted EDM in AISI. Res. J. Eng. Sci. 2016, 5, 11-16.

[41] Uhlmann E, Domingos DC. Investigations on Vibration-Assisted EDM-Machining of Seal Slots in High-Temperature Resistant Materials for Turbine Components-Part II. Procedia CIRP 2016, 42, 334-339. DOI:10.1016/j.procir.2016.02.179

[42] Tsai MY, Fang CS, Yen MH. Vibration-Assisted Electrical Discharge Machining of Grooves in a Titanium Alloy (Ti-6A-4V). Int. J. Adv. Manuf. Technol. 2018, 97, 297-304. DOI:10.1007/s00170-018-1904-2

[43] Prabu M, Ramadoss G, Narendersingh P, Christy TV, Eswaran VV. Electrical Discharge Machining of Al-TiB2 with a Low-Frequency Vibrating Tool. Sci. Eng. Compos. Mater. 2014, 21, 445-452. DOI:10.1515/secm-2013-0023

[44] Mwangi JW, Nyakoe GN, Ikua BW, Zeidler H, Karanja KS. Effect of Low Frequency Vibration in Electrical Discharge Machining of AlSiC Metal Matrix Composite. J. Sustain. Res. Eng. 2014, 1, 45-50.

[45] Huu PN, Tien LB, Duc QT, Van DP, Xuan CN, Van TN, et al. Multi-Objective Optimization of Process Parameter in EDM Using Low-Frequency Vibration of Workpiece Assigned for SKD61. Sādhanā 2019, 44, 211. DOI:10.1007/s12046-019-1185-y

[46] Todkar AS, Sohani MS, Shinge AR. An Investigation of Vibration-Assisted Micro-Electro Discharge Machining of K 340 Steel. IUP J. Mech. Eng. 2017, 10, 2-29.

[47] Mishra K, Sarkar BR, Bhattacharyya B.Vibration-Assisted Micro-EDM Process. In Micro-Electrical Discharge Machining Processes: Technologies and Applications; Kibria G, Jahan MP, Bhattacharyya B,Eds.; Springer: Singapore, 2019; pp. 161-184; ISBN 978-981-13-3074-2.

[48] Lee PA, Kim Y, Kim BH. Effect of Low Frequency Vibration on Micro EDM Drilling. Int. J. Precis. Eng. Manuf. 2015, 16, 2617-2622. DOI:10.1007/s12541-015-0335-3

[49] Bajpai V, Mahambare P, Singh RK. Effect of Thermal and Material Anisotropy of Pyrolytic Carbon in Vibration-Assisted Micro-EDM Process. Mater. Manuf. Process. 2016, 31, 1879-1888. DOI:10.1080/10426914.2015.1127937

[50] Mastud S, Garg M, Singh R, Samuel J, Joshi S.Experimental Characterization of Vibration-Assisted Reverse Micro Electrical Discharge Machining (EDM) for Surface Texturing. In Proceedings of the ASME 2012 International Manufacturing Science and Engineering Conference, Notre Dame, IN, USA, 4-8 June 2012; pp. 439-448.

[51] Unune DR, Mali HS. Experimental Investigation on Low-Frequency Vibration Assisted Micro-WEDM of Inconel 718. Eng. Sci. Technol. Int. J. 2017, 20, 222-231. DOI:10.1016/j.jestch.2016.06.010

[52] Hoang KT, Yang SH. A Study on the Effect of Different Vibration-Assisted Methods in Micro-WEDM. J. Mater. Process. Technol. 2013, 213, 1616-1622. DOI:10.1016/j.jmatprotec.2013.03.025

[53] Prihandana G, Sriani T, Mahardika M. Improvement of Machining Time in Micro-EDM with Workpiece Vibration and Graphite Powder Mixed in Dielectric Fluid. Indian J. Eng. Mater. Sci. 2012, 19, 375-378.

[54] Maity K, Choubey M. Modeling and Process Simulation of Vibration Assisted Workpiece in Micro-EDM Using FEM. World J. Eng. 2016, 13, 242-250. DOI:10.1108/WJE-06-2016-033

[55] Beigmoradi S, Ghoreishi M, Vahdati M. Optimum Design of Vibratory Electrode in Micro-EDM Process. Int. J. Adv. Manuf. Technol. 2018, 95, 3731-3744. DOI:10.1007/s00170-017-1428-1

[56] Sagar C, Sanjeev G, Sanjay K. Parameter Optimization of Wire EDM Using Low Frequency Vibrations. Invertis J. Sci. Technol. 2015, 8, 119-124.

[57] Uhlmann E, Domingos DC. Investigations on Vibration-Assisted EDM-Machining of Seal Slots in High-Temperature Resistant Materials for Turbine Components. Procedia CIRP 2013, 6, 71-76. DOI:10.1016/J.PROCIR.2013.03.019

[58] Mastud SA, Kothari NS, Singh RK, Joshi SS. Modeling Debris Motion in Vibration Assisted Reverse Micro Electrical Discharge Machining Process (R-MEDM). J. Microelectromech. Syst. 2015, 24, 661-676. DOI:10.1109/JMEMS.2014.2343227

[59] Schimmelpfennig TM, Rickerts LM, Perfilov I. Electrical Discharge Machining of Dental Implants in Ultrasonic Stimulated Dielectric. Procedia CIRP 2022, 113, 59-63. DOI:10.1016/J.PROCIR.2022.09.104