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

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概要

• 論文の詳細を見る

• Vibratory-erosion tests on a typical ductile material, 304 stainless steel, were carried out under a specified condition of uniform cavitation-nuclei-size distributions. We systematically investigated the behavior of fracture modes on a smooth surface one order of magnitude smaller in roughness than the ASTM recommended value, as well as the small roughness effect 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 slight roughness plays an important role in the development and/or propagation of the cracks and also in microscopic removals, which shorten the incubation period.

• 社団法人日本機械学会の論文
• 1991-08-15

著者

• OBA Risaburo

  Institute of Fluid Science, Tohoku University

• Oba Risaburo

  Emerit. Professor Of Tohoku University Professor Of Saitama Institute Of Technology

• Oba Risaburo

  Institute Of Fluid Science Tohoku University

• Oba Risaburo

  Institute Of High Speed Mechanics Tohoku University

• Hokkirigawa K

  Associate Professor Faculty Of Engineering Yamagata University

• Hokkirigawa Kazuo

  Department Of Mechanical Systems Engineering Faculty Of Engineering Yamagata University

• Hokkirigawa Kazuo

  Department Of Mechanical Engineering Tohoku University

• AHMED Shemy

  Institute of Fluid Science, Tohoku University

• KIKUCHI Kinya

  Tohoku Gakuin University

• Ahmed S

  Assiut Univ. Egy

• Ahmed Shemy

  Institute Of Fluid Science Tohoku University

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