Developed Stages of Ultrasonically Produced Cavitation Erosion and Corresponding Surface Roughness

S. M. Ahmed, Kazuo Hokkirigawa, Risaburo Oba, Yasuaki Matsudaira

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The vibratory-erosion-tests on a typical material of 304 stainless steel were carried out. We carefully observed the erosion patterns and the surface-roughness-aspects with respect to test times, under a specified condition of a uniform nuclei-size-distribution, by a scanning electron microscope and by a profilometer. Both surface topography and surface profile divided the eroded surfaces into three stages. In the first one, the surface was plastically deformed and the roughness rapidly increaseed. In the second stage, the surface became more hardened, so the crack initiated and propagated, and after that, local removal of material occured. Also, the roughness doubled and slightly increaseed. In the third stage, almost all the virgin surface was removed and the surface roughness doubled, again. Both the skewness and the kurtosis was calculated. It was found that the skewness has a positive and a negative value before and after the material removal, respectively. The kurtosis had a positive value for all test times.

Original languageEnglish
Pages (from-to)572-578
Number of pages7
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume55
Issue number511
DOIs
Publication statusPublished - 1989

Keywords

  • Cavitation
  • Erosion
  • Stainless Steel
  • Surface Roughness
  • Ultrasonic Cavitation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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