Cyclic indentation in aluminum

Fuqian Yang, Lingling Peng, Kenji Okazaki

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Cyclic indentation was used to evaluate the dynamic deformation of aluminum. Under the load-controlled cyclic indentation, the indenter continuously penetrated into the material and reached a steady state at which the penetration speed (per cycle) was a constant. The amplitude of the cyclic indentation depth was basically controlled by the amplitude of the cyclic indentation load, independent of the mean indentation load and the indentation frequency. The steady state penetration speed decreased with increasing the amplitude of the cyclic indentation load due to the increase in the size of plastic zone. It also decreased with the increase in the mean indentation load due to local strain hardening, while it increased with the increase of the indentation frequency.

Original languageEnglish
Pages (from-to)4513-4520
Number of pages8
JournalJournal of Materials Science
Issue number12
StatePublished - Jun 2007

Bibliographical note

Funding Information:
Acknowledgments This research is supported by NSF through a grant CMS-0508989 and Kentucky Science and Engineering Foundation through a grant KSEF-148-502-03-73.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Mechanical Engineering
  • Polymers and Plastics
  • General Materials Science
  • Materials Science (miscellaneous)


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