Journal of Mechanical Science and Technology

, Volume 32, Issue 9, pp 4365–4372 | Cite as

Performance evaluation of micro-dimple formation on a Ti-6Al-4V alloy by using electrical discharge drilling

  • Sang Tae Jung
  • S. Thirumalai Kumaran
  • Chang Ping Li
  • Rendi Kurniawan
  • Tae Jo KoEmail author


Micro-dimple formation improves the tribological behavior of a material. This study investigates dimple formation on a titanium (Ti-6Al-4V) alloy by using electrical discharge drilling. Input parameters, namely capacitance (C), pulse-on-time (Ton), and voltage (V), were varied to measure the output quality responses including dimple depth, burr height, and burr width. The experimental results indicated that the quality of the dimple is determined based on the spark energy and rate of material removal. A regression analysis was performed for each output response. The developed model confirmed the fitness at a 95 % confidence interval. The contribution of each factor and its significance was determined by using analysis of variance (ANOVA). Further, the optimum drilling condition was predicted by using desirability analysis (C = 10000 pF, Ton = 100 μs, and V = 180 V). The microscopic view of the dimple array and the micro-dimple geometry were analyzed by using scanning electron microscopy images.


Burr height Burr width Dimple depth Electrical discharge drilling 


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  1. [1]
    R. Kurniawan, T. J. Ko, L. C. Ping, S. T. Kumaran, G. Kiswanto, P. Guo and K. F. Ehmann, Development of a twofrequency, elliptical-vibration texturing device for surface texturing, Journal of Mechanical Science and Technology, 31 (7) (2017) 3465–3473.CrossRefGoogle Scholar
  2. [2]
    M. Imran, A. S. Saragih, M. S. U. Sahar and T. J. Ko, Digital maskless lithography capabilities for surface texturing with biomachining, International Journal of Advanced Manufacturing Technology, 89 (9) (2017) 3709–3719.CrossRefGoogle Scholar
  3. [3]
    M. B. Stern and T. R. Jay, Dry etching for coherent refractive microlens arrays, Optical Engineering, 33 (11) (1994) 3547–3551.CrossRefGoogle Scholar
  4. [4]
    C. C. Chiu and Y. C. Lee, Fabricating of aspheric micro-lens array by excimer laser micromachining, Optics and Lasers in Engineering, 49 (2011) 1232–1237.CrossRefGoogle Scholar
  5. [5]
    S. T. Kumaran, T. J. Ko, M. Uthayakumar, M. A. Khan and N.-W. Magdalena, Surface texturing by dimple formation inTiAlSiZr alloy using μ-EDM, Journal of the Australian Ceramic Society, 53 (2) (2017) 821–828.CrossRefGoogle Scholar
  6. [6]
    X. Chen, N. Qu, Z. Hou, X. Wang and D. Zhu, Friction reduction of chrome-coated surface with micro-dimple arrays generated by electrochemical micromachining, Journal of Materials Engineering and Performance, 26 (2) (2017) 667–675.CrossRefGoogle Scholar
  7. [7]
    F. Z. Dai, D. P. Wen, Y. K. Zhang, J. Z. Lu, X. D. Ren and J. Z. Zhou, Micro-dimple array fabricated on surface of Ti6Al4V with a masked laser ablation method in air and water, Materials & Design, 84 (2015) 178–184.CrossRefGoogle Scholar
  8. [8]
    K. Li, Y. Hu and Z. Yao, Experimental study of micro dimple fabrication based on laser shock processing, Optics & Laser Technology, 48 (2013) 216–225.CrossRefGoogle Scholar
  9. [9]
    M. Wang, Z. Bao, G. Qiu and X. Xu, Fabrication of microdimple arrays by AS-EMM and EMM, International Journal of Advanced Manufacturing Technology, 93 (1–4) (2017) 787–797.CrossRefGoogle Scholar
  10. [10]
    Z. Hou, N. Qu and X. Chen, Electrochemical micromachining of large-area micro-dimple arrays with high machining accuracy, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture (2016) Doi: 10.1177/0954405416682280.Google Scholar
  11. [11]
    S. T. Kumaran, T. J. Ko, M. Uthayakumar and M. M. Islam, Prediction of surface roughness in abrasive water jet machining of CFRP composites using regression analysis, Journal of Alloys and Compounds, 724 (2017) 1037–1045.CrossRefGoogle Scholar
  12. [12]
    I. Puertas, C. J. Luis and L. Álvarez, Analysis of the influence of EDM parameters on surface quality, MRR and EW of WC-Co, Journal of Materials Processing Technology, 153–154 (2004) 1026–1032.CrossRefGoogle Scholar
  13. [13]
    U. Çaydaş and A. Hasçalık, A study on surface roughness in abrasive waterjet machining process using artificial neural networks and regression analysis method, Journal of Materials Processing Technology, 202 (1–3) (2008) 574–582.CrossRefGoogle Scholar
  14. [14]
    S. T. Kumaran, T. J. Ko, C. Li, Z. Yu and M. Uthayakumar, Rotary ultrasonic machining of woven CFRP composite in a cryogenic environment, Journal of Alloys and Compounds, 698 (2017) 984–993.CrossRefGoogle Scholar
  15. [15]
    S. Rajendran, K. Marimuthu and M. Sakthivel, Study of crack formation and resolidified layer in EDM process on T90Mn2W50Cr45 tool steel, Journal of Materials and Manufacturing Processes, 28 (2013) 664–669.Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Sang Tae Jung
    • 1
  • S. Thirumalai Kumaran
    • 2
  • Chang Ping Li
    • 3
  • Rendi Kurniawan
    • 1
  • Tae Jo Ko
    • 1
    Email author
  1. 1.School of Mechanical EngineeringYeungnam UniversityGyeongsangbuk-doKorea
  2. 2.Faculty of Mechanical EngineeringKalasalingam UniversityKrishnankoilIndia
  3. 3.School of Mechanical and Electrical EngineeringHunan University of Science and TechnologyHunanChina

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