ロジスティック解析に基づくキャビテーション壊食挙動の定式化

Material type: 文書・図像類

Author: 服部, 修次ほか

Publisher: 社団法人日本機械学会

Publication date: 2004-03-25

Material Format: Digital

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Note (General)：: Cavitation erosion tests were carried out using vibratory apparatus to obtain the volume loss curve and the volume loss rate curve for aluminum oxide ...

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Material Type: 文書・図像類
Title: ロジスティック解析に基づくキャビテーション壊食挙動の定式化
Author/Editor: 服部, 修次
前田, 浩平
HATTORI, Shuji
MAEDA, Kohei
Author Heading: 服部, 修次
前田, 浩平
HATTORI, Shuji
MAEDA, Kohei
Publication, Distribution, etc.: 社団法人日本機械学会
Publication Date: 2004-03-25
Publication Date (W3CDTF): 2004-03-25
Alternative Title: Formulation of Cavitation Erosion Behavior based on Logistic Analysis
Periodical title: 日本機械学会論文集.A編
No. or year of volume/issue: 70 691
Volume: 70
Issue: 691
Pages: 510-515
Text Language Code: jpn
Subject Heading: Cavitation Erosion
Ceramics
Nonferrous Metal
Erosion
Cavitation
Surface Roughness
Modeling
Logistic Curve
Target Audience: 一般
Note (General): Cavitation erosion tests were carried out using vibratory apparatus to obtain the volume loss curve and the volume loss rate curve for aluminum oxide and pure copper. When the aluminum oxide was exposed to cavitation, the erosion originated at defects such as pores and holes. Particles were removed granule by granule, and the erosion pits spread throughout the speciment surface. The number of erosion pits increased exponentially. By the analyses of multiplication and annihilation process of the erosion pits, the model of the volume loss curve was established. The volume loss rate curve u and the volume loss curve V with exposure time were expressed by three parameters α, β and c in the following equation. u=α/β 1/(1+e^<-αt>), V=α/βt-1/βln((1+C)/(1+ce^<-αt>)) Especially, the parameter c relates to a reciprocal of the initial volume loss rate, and was estimated to be low for the material with high initial defect density. As was expected, the value of c is lower for aluminum oxide than that for pure copper, and the value is lower for a roughened specimen of copper than that for a smooth specimen. It was concluded that the calculation based on this model corresponds well with volume loss curve and volume loss rate curve due to cavitation.
Access Restrictions: 限定公開
Rights (production): 社団法人日本機械学会
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ