Characterization of micro-crack formation on machined surfaces in dry EDM using shielding

Govindan Puthumana, S. S. Joshi

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

143 Downloads (Pure)

Abstract

The characteristics of a surface generated during the dry EDM process are assessed qualitatively and quantitatively as a function of voltage, current, pulse off-time and rotational speed of the tool electrode. A quantitative characterization of micro-cracks on the surfaces is performed. In this analysis, various features of micro-cracks formed on the dry ED machined surfaces are evaluated in terms of the average micro-crack lengths. These results are finally compared with those obtained using liquid dielectric EDM at the same parametric conditions. It was evident that average crack length was significantly influenced by voltage, current, pulse ‘off-time’ and speed. The average micro-crack length was 1.5 to 6 times higher in liquid dielectric EDM as compared to the dry EDM.
Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Precision, Meso, Micro, and Nano Engineering
Publication date2013
Pages691-695
Publication statusPublished - 2013
Externally publishedYes
Event8th International Conference on Precision, Meso, Micro and Nano Engineering - National Institute of Technology Calicut, India
Duration: 13 Dec 201315 Dec 2013

Conference

Conference8th International Conference on Precision, Meso, Micro and Nano Engineering
LocationNational Institute of Technology Calicut
CountryIndia
Period13/12/201315/12/2013

Keywords

  • Dry EDM
  • Micro-crack
  • Crack length
  • Crack number density
  • Crack orientation and parametric analysis

Fingerprint Dive into the research topics of 'Characterization of micro-crack formation on machined surfaces in dry EDM using shielding'. Together they form a unique fingerprint.

Cite this