Microhole machining on precision CFRP components using electrical discharging machining

Soo Hyun Park, Gyuho Kim, Wonkyun Lee, Byung Kwon Min, Seok Woo Lee, Tae Gon Kim

Research output: Contribution to conferencePaperpeer-review

10 Citations (Scopus)


Recently CFRP has been focused in a variety of new applications such as precision electrical components, surgical tools and biomedical devices because of its light-weight and excellent mechanical property. However, the form accuracies of the mechanical features generated by traditional CFRP fabrication methods are limited to meet the requirements of microcomponents. Furthermore, due to the difficulties in mechanical machining of CFRP in microscale, sometimes alternative material removal method is required in production of precision devices. Micro-electrical discharge machining (EDM) has been used for manufacturing of microholes and 3D micromolds of metal workpieces because of its machining accuracy and non-contact machining characteristics. In this study, we have implemented micro-EDM to the precision machining of CFRP substrates that are also a conductor. Proper EDM conditions for microhole drilling of CFRP for precision component fabrication with micro features were studied. Experiments on micro-EDM machinability were performed using a commercial micro-EDM tool. A variety of machining parameters were tried such as open circuit voltage and maximum current. Material removal rate (MRR) and tool wear ratio (TWR) were compared with respect to experimental conditions.

Original languageEnglish
Publication statusPublished - 2015
Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
Duration: 2015 Jul 192015 Jul 24


Other20th International Conference on Composite Materials, ICCM 2015

Bibliographical note

Publisher Copyright:
© 2015 International Committee on Composite Materials. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Ceramics and Composites


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