SEM Observation of the Vibratory Cavitation-Fracture Mode During the Incubation Period and the Small Roughness Effect

Shemy Mohamed Ahmed, Kazuo Hokkirigawa, Risaburo Oba, Kinya Kikuchi

研究成果: Article

3 引用 (Scopus)

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Vibratory-erosion tests on a typical ductile material, 304 stainless steel, were carried out under a specified condition of uniform sitation-nuclei-size distribution. We systematically investigated the behavior of the fracture mode on a smooth surface one figure smaller in roughness than the ASTM recommended value, as well as small roughness effects in the development and/or propagation of cracks and particle fall-off, in the second stage of the incubation period, by means of a scanning electron microscope. It is clear that the mode is fatigue and ductile fracture, and also that small roughness plays an important role in development and/or propagation of the cracks and also in microscopic removals, which shorten the incubation period.

元の言語English
ページ(範囲)1876-1882
ページ数7
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
56
発行部数527
DOI
出版物ステータスPublished - 1990 1 1
外部発表Yes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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