Inverter power supply and control system for high pulse energy laser shock processing

2012 ◽  
Vol 10 (s2) ◽  
pp. S21418-321422
Author(s):  
Haiying Xu Haiying Xu ◽  
Zhifei Miao Zhifei Miao ◽  
Zhigang Che Zhigang Che ◽  
Wei Zhang Wei Zhang ◽  
Shikun Zou Shikun Zou ◽  
...  
Keyword(s):  
Control System ◽  
Power Supply ◽  
Laser Shock ◽  
High Pulse Energy ◽  
Laser Shock Processing ◽  
Inverter Power Supply ◽  
High Pulse ◽  
Energy Laser ◽  
And Control ◽  
Shock Processing

Application of High-Energy Laser in Strain-Hardening of Material

2013 ◽  
Vol 321-324 ◽  
pp. 141-145
Author(s):  
Zhi Lin Lai ◽  
Cheng Wang ◽  
Wei Feng He ◽  
Liu Cheng Zhou ◽  
Zhi Bin An
Keyword(s):  
Residual Stress ◽  
Surface Hardening ◽  
Compressive Residual Stress ◽  
Processing System ◽  
High Energy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Energy Laser ◽  
High Energy Laser ◽  
Shock Processing

Laser is a coherent, convergent and monochromatic beam of electromagnetic radiation and has wide applications in all walks of life. Surface engineering is one of the applications and contains surface alloying/cladding, surface melting/remelting, surface amorphization and surface hardening/shocking. Laser surface hardening/shocking has been proposed as an effective technology for improving surface mechanical and corrosion properties of metals by inducing a compressive residual stress field. The laser shock processing system with high-energy laser is the key technology for industrial application of surface shocking. The laser shock processing system was described in this paper and the power supply system and the samples gripping and handling system were also introduced. Experiment was conducted by the shock processing system and results shows that high-energy laser has led to compressive residual stress in near-surface regions of 1Cr11Ni2W2MoV stainless steel and improved 1Cr11Ni2W2MoV fatigue life greatly.

Laser shock processing with 20 MW laser pulses delivered by optical fibers

2000 ◽  
Vol 9 (3) ◽  
pp. 235-238 ◽  
Author(s):  
T. Schmidt-Uhlig ◽  
P. Karlitschek ◽  
M. Yoda ◽  
Y. Sano ◽  
G. Marowsky
Keyword(s):  
Optical Fibers ◽  
Laser Pulses ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Shock Processing

Laser Shock Processing of Ni-Base Superalloy and High Cycle Fatigue Properties

2011 ◽  
Vol 697-698 ◽  
pp. 235-238 ◽  
Author(s):  
L. Zhou ◽  
Y.H. Li ◽  
W.F. He ◽  
X.D. Wang ◽  
Q.P. Li
Keyword(s):  
High Cycle Fatigue ◽  
Laser Pulses ◽  
Fatigue Properties ◽  
Treatment Technique ◽  
Cycle Fatigue ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
First Order ◽  
Shock Processing ◽  
Base Superalloy

A plasma sound wave detection method of laser shock processing (LSP) technology is proposed. Speciments of Ni-base superalloy are used in this paper. A convergent lens is used to deliver 1.2 J, 10 ns laser pulses by a Q-switch Nd:YAG laser, operating at 1 Hz. The influence of the laser density to the shock wave is investigated in detail for two different wavelength lasers. Constant amplitude fatigue data are generated in room environment using notch specimens tested at an amplitude of vibration 2.8 mm and first-order flextensional mode. The results show that LSP is an effective surface treatment technique for improving the high cycle fatigue performance of Ni-base superalloys having a factor of 1.62 improvement in fatigue life.

Forced vibration analysis of blade after selective laser shock processing based on Timoshenko’s beam theory

2020 ◽  
Vol 243 ◽  
pp. 112249 ◽  
Author(s):  
Peilin Fu ◽  
Jianghong Yuan ◽  
Xu Zhang ◽  
Guozheng Kang ◽  
Ping Wang ◽  
...  
Keyword(s):  
Forced Vibration ◽  
Vibration Analysis ◽  
Beam Theory ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Forced Vibration Analysis ◽  
Shock Processing
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