Logistic curve model of cavitation erosion progress in metallic materials

被引：11

作者：

Hattori, Shuji ^{[1
]}

Maeda, Kohei ^{[1
]}

机构：

[1] Univ Fukui, Grad Sch Engn, Fukui 9108507, Japan

来源：

WEAR | 2010年 / 268卷 / 7-8期

关键词：

Cavitation erosion; Iron and steel; Nonferrous metal; Erosion; Modeling; Logistic curve; WEIBULL DISTRIBUTION;

D O I：

10.1016/j.wear.2009.11.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The authors previously found that the change in volume loss rate wit h the exposure time can be expressed by a logistic curve In this study, the validity of this model is examined for various materials such as pure aluminum, carbon steels, stainless steels, cobalt alloys, and so on The MDE (mean depth of erosion) d as a function of the exposure time can be expressed by three parameters alpha, beta and c as in the following equation d = alpha/beta t - 1/beta In 1+c/1+ce(-al) The parameters alpha, beta and c are derived from the relation between the nominal incubation period and the slope of the maximum rate stage, from the average thickness of the removed layer when the nominal incubation period is terminated, and from an arbitrary point (to, do) of the MDE in the maximum rate stage We conclude that the calculated curve based on this model is in good agreement with the MDE data points for various materials, test conditions and test methods (C) 2009 Elsevier B.V All rights reserved

引用

页码：855 / 862

页数：8

共 9 条

[1]

[Anonymous], 2005, ANN BOOK ASTM STAND, V04.13

[2] Formulation of cavitation erosion behavior based on logistic analysis [J].