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

doi:10.1299/kikaib.56.1876

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

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1876-1882
Number of pages	7
Journal	Transactions of the Japan Society of Mechanical Engineers Series B
Volume	56
Issue number	527
DOIs	https://doi.org/10.1299/kikaib.56.1876
Publication status	Published - 1990
Externally published	Yes

Keywords

Bubble
Cavitation
Erosion
Multi-phase Flow
Roughness
Turbomachinery

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

Access to Document

10.1299/kikaib.56.1876

Cite this

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

abstract = "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.",

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author = "Ahmed, {Shemy Mohamed} and Kazuo Hokkirigawa and Risaburo Oba and Kinya Kikuchi",

year = "1990",

doi = "10.1299/kikaib.56.1876",

language = "English",

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pages = "1876--1882",

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AU - Ahmed, Shemy Mohamed

AU - Hokkirigawa, Kazuo

AU - Oba, Risaburo

AU - Kikuchi, Kinya

PY - 1990

Y1 - 1990

N2 - 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.

AB - 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.

KW - Bubble

KW - Cavitation

KW - Erosion

KW - Multi-phase Flow

KW - Roughness

KW - Turbomachinery

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

Abstract

Keywords

ASJC Scopus subject areas

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