Paper Title:
Investigation of Laser Shock Peening on Aero-Engine Compressor Rotor Blade
  Abstract

Compressor rotor blade is one of the critical parts of aero-engine. Because of the complex structure and bad work environment, it often went wrong. More over, the trouble of blade can result in serious accident of engine even the aircraft. But the conventional shot peening strengthen method couldn’t take ideal effect, so a new method, laser shock peening on aero-engine compressor rotor blade was studied in this paper. The principle of laser shock peening strengthening was presented first, and the appropriate shock parameters of a certain type blade are fixed on by modeling. The parameters were as follows: laser pulse width is 20ns, output energy is 25J, the spot diameter is 8mm, and peak value is at GW level, and the laser peak value power is bigger than material dynamic yield intensity. Based on these parameters, an experiment was performed by shocking the blade through a repeated Nd: glass LASER supplied by Jiangsu University. Through contrastive performance test, an analysis on the high frequency fatigue life and surface rigidity of the blade fore and after laser shock was performed. The result was concluded that laser shock peening can significantly increase the high frequency fatigue life of aero-engine compressor rotor blade, and enhance the surface rigidity to increase the performance of contuse resistance. At last the reasons were analyzed from two aspects: laser shock can impart compressive residual stress on blade and reduce the size of crystal grain. Surface compressive residual stress can change the blade distribution of load when working; and reduce the size of crystal grain can bring in more crystal interface, for the more interface the crystal has the higher dislocation moving resistance and yield stress is produced.

  Info
Periodical
Key Engineering Materials (Volumes 373-374)
Main Theme
Edited by
M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
Pages
404-407
DOI
10.4028/www.scientific.net/KEM.373-374.404
Citation
Z. Ma, Y. H. Li, C. Wang, "Investigation of Laser Shock Peening on Aero-Engine Compressor Rotor Blade ", Key Engineering Materials, Vols. 373-374, pp. 404-407, 2008
Online since
March 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yong Hui Xie, Di Zhang, Zhen Ping Feng
Abstract:Forced vibration and liquid corrosion are important reasons for last stage blade failure in steam turbine. In order to improve reliability...
613
Authors: Aleksandrs Korjakins, Sergejs Gluhihs, Andrejs Popovs, Aleksandr Tiskunov
Abstract:With increasing attention being devoted to the problem of reducing service costs for a wide range of turbines and compressors, an attractive...
37
Authors: Zhi Yong Li, Hua Ji, Hong Li Liu
Abstract:Because the process of blade in electrochemical machining(EMC) can be effected by many factors, such as blade shapes, machining electrical...
893
Authors: Zhi Yun Wu, Chun Fang Zhang
Chapter 16: Tooling Testing and Evaluation of Materials
Abstract:The scale application of wind energy conforms to the demand of sustainable development in our country. However, with the blower’s blade...
2586
Authors: Wei Qiang Zhao, Yong Xian Liu, Mo Wu Lu
Chapter 3: Computer Aided Design, Modeling and Analysis
Abstract:This paper introduces a FEA method for vibration characteristics analysis of an aero-engine shrouded turbine blade and makes an actual modal...
443