Mechanism influence on fatigue characters of aerial engine blade by laser shock processing

被引：0

作者：

Ren, X. D. ^{[1
]}

Zhang, Y. K. ^{[1
]}

Li, Y. H. ^{[2
]}

Cheng, W. ^{[2
]}

Zhuang, M. ^{[2
]}

机构：

[1] Jiangsu Univ, Sch Mech Engn, Jiangsu 212013, Peoples R China

[2] Air Force Engn Univ, Air Force Engn Coll, Xian 710038, Shaanxi, Peoples R China

来源：

PRECISION SURFACE FINISHING AND DEBURRING TECHNOLOGY | 2007年 / 24-25卷

基金：

中国国家自然科学基金;

关键词：

laser shock; fatigue characters; aerial engine blade;

D O I：

10.4028/www.scientific.net/AMR.24-25.371

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In Laser Shock Processing when a material is irradiated with short laser pulses (ns)of very high densities(>GW/cm(2)), a high intensity shock wave is generated. This treatment can reduce the rate of fatigue cracking and stress corrosion cracking in structural metals or alloys needed for aerospace, nuclear power plants, and military applications. And laser shock processing has been shown to be a viable method of strengthen metallic components. Transformation on the characters of aerial engine blade by laser shock processing and influence on the fatigue life with these transformations were studied. And the relatively fatigue life experiment of aerial engine blade was done to validate the influence on the fatigue life of aerial engine by laser shock processing. It was found that laser shock processing could bring residual compressive stress and high-density dislocation on the surface of the blade. All these transformation greatly increase the fatigue life of aerial engine blade.

引用

页码：371 / +

页数：2

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