A FATIGUE CRACK GROWTH OF ALUMINUM ALLOY BY SURFACE HARDENING

摘要：

This study is to investigate the effect of compressive residual stress on the fatigue crack growth characteristics. 1 Additionally we found the optimum shot peening condition. Shot peening was performed on velocity of 40 m/s, 50 m/s and 70 m/s. Compact tension specimen are Al7075-T6 and Al6061-T651. Fatigue crack growth rate ware expressed at crack tip as stress intensity factor range that is da/dN and ΔK. Frequency was 10 Hz and used sinusoidal. The result show that the fatigue characteristics was improved by shot peening. Also the optimum shot velocity condition was 50 m/s at Al7075-T6 and 40 m/s at Al6061-T651.

作者: Tae Hoon Song Man Bae Lim Sun Chul Huh Won Jo Park

作者单位: Graduate school of Gyeongsang National University Department of Precision and Mechanical Engineering, Gyeongsang National University Department of Mechanical and Aerospace Engineering, Gyeongsang National University Institute of Mari

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）