scholarly journals Review on Laser Interaction in Confined Regime: Discussion about the Plasma Source Term for Laser Shock Applications and Simulations

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2032
Author(s):  
Alexandre Rondepierre ◽  
Arnaud Sollier ◽  
Laurent Videau ◽  
Laurent Berthe

This review proposes to summarize the development of laser shock applications in a confined regime, mainly laser shock peening, over the past 50 years since its discovery. We especially focus on the relative importance of the source term, which is directly linked to plasma pressure. Discussions are conducted regarding the experimental setups, experimental results, models and numerical simulations. Confined plasmas are described and their specific properties are compared with those of well-known plasmas. Some comprehensive keys are provided to help understand the behavior of these confined plasmas during their interaction with laser light to reach very high pressures that are fundamental for laser shock applications. Breakdown phenomena, which limit pressure generation, are also presented and discussed. A historical review was conducted on experimental data, such as pressure, temperature, and density. Available experimental setups used to characterize the plasma pressure are also discussed, and improvements in metrology developed in recent years are presented. Furthermore, analytical and numerical models based on these experiments and their improvements, are also reviewed, and the case of aluminum alloys is studied through multiple works. Finally, this review outlines necessary future improvements that expected by the laser shock community to improve the estimation of the source term.

2015 ◽  
Vol 664 ◽  
pp. 87-95
Author(s):  
Sheng Bo Jiao ◽  
Li Cheng ◽  
Quan Tong Li ◽  
Xiao Wei Li

The cyclic load number of aero-engine blade during its service life is very likely beyond 107, which is regarded as the conventional fatigue limit. Moreover, surface strengthening is very often used in the manufacturing process of blade. The conventional testing method in the VHCF regime cannot exactly reflect the stress state of the blade, including the mechanism of crack initiation. To study the fatigue behavior and effects of laser shock peening, a kind of bending fatigue subcomponent specimen was designed and the laser shock peening model was established. Experiment about TC17 was accomplished by the Ulra-High Cycle bending fatigue system. It is found that the fatigue damage occurs beneath the surface and the S-N curve is continuously rather than multi-step declining in the VHCF regime. Process of surface strengthening has a significant effect on fatigue performance of TC17 titanium alloy.


2018 ◽  
Vol 335 ◽  
pp. 32-40 ◽  
Author(s):  
Zhaopeng Tong ◽  
Xudong Ren ◽  
Yunpeng Ren ◽  
Fengze Dai ◽  
Yunxia Ye ◽  
...  

2021 ◽  
Author(s):  
D. S. Shtereveria ◽  
A. A. Volkova ◽  
A. A. Kholopov ◽  
M. A. Melnikova ◽  
D. M. Melnikov

2016 ◽  
Vol 108-109 ◽  
pp. 104-114 ◽  
Author(s):  
Cheng Wang ◽  
Xiaogui Wang ◽  
Yangjian Xu ◽  
Zengliang Gao

2021 ◽  
Vol 174 ◽  
pp. 111037
Author(s):  
Jiří Kubásek ◽  
Orsolya Molnárová ◽  
Jaroslav Čapek ◽  
Kristína Bartha ◽  
Jakub Čížek ◽  
...  

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