中国机械工程2016，Vol.27Issue(17)：2396-2401,6.DOI:10.3969/j.issn.1004-132X.2016.17.021
环境湿度对铸铝合金超声疲劳裂纹扩展速率的影响研究
Effects of Humidity on Ultrasonic Fatigue Crack Growth Rate of a Cast Aluminum Alloy
李文凯 1崔海涛 1温卫东 1苏旭明 2C C Engler-Pinto Jr2
作者信息
- 1. 南京航空航天大学江苏省航空动力系统重点实验室，南京，210016
- 2. 北美福特汽车研究与创新中心，迪尔伯恩，密歇根州，美国，48121
- 折叠
摘要
Abstract
Several fatigue crack growth tests on a cast aluminum alloy (A356-T6)were performed herein under different frequencies and humidity levels.The experimented results show that ultrasonic fatigue in dry air and in distilled water have lowest and highest crack growth rate respectively.Con-ventional fatigue in lab air has almost same crack growth rate as ultrasonic fatigue in distilled water. Wei’s fatigue crack growth rate prediction model was modified,which could be used to predict the fa-tigue crack growth rate for peak aged cast aluminum alloy under different frequencies and humidity levels.关键词
铸铝合金/超声疲劳/裂纹扩展/环境湿度Key words
cast aluminum alloy/ultrasonic fatigue/crack growth/environmental humidity分类
数理科学引用本文复制引用
李文凯,崔海涛,温卫东,苏旭明,C C Engler-Pinto Jr..环境湿度对铸铝合金超声疲劳裂纹扩展速率的影响研究[J].中国机械工程,2016,27(17):2396-2401,6.
