Three-dimension Reconstruction of Pit Corrosion Damage Morphology and Digital Simulation

被引：2
|
作者：
Lv Shengli [1 ]
Wang Zhenguo [1 ]
Xu Chenglong [1 ]
Zhang Wei [1 ]
机构：
[1] NW Polytech Univ, Natl Key Lab Sci & Technol UAV, Xian 710072, Peoples R China
来源：
FRONTIERS OF MANUFACTURING AND DESIGN SCIENCE, PTS 1-4 | 2011年 / 44-47卷
关键词：
pre-corrosion; pitting corrosion; finite element method; residual fatigue life prediction; GROWTH;
D O I：
10.4028/www.scientific.net/AMM.44-47.4186
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
According to the various grey values at different regions in an image, a three-dimension (3D) solid model is reconstructed based on the pitting corrosion damage data obtained from the pre-corrosion accelerated experiment which is performed under four different time levels: 12h, 24h, 48h and 72h by CAD. An analysis procedure is developed using finite element analysis to predict stresses and the crack nucleation site due to corroded pits. Based on the observations on fatigue fracture section, the AFGROW software is used to simulate the influence of a variety of corrosion damages and corrosion pit depths on the specimen's residual fatigue life. An effective and reliable engineering method for predicting fatigue life of corroded specimen is established on the base of this research work.
引用
收藏
页码：4186 / 4190
页数：5
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