A self-closed thermal model for laser shock peening under the water confinement regime configuration and comparisons to experiments

Journal Article · Wed Jun 01 04:00:00 EDT 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1915537· OSTI ID:20711713

Benxin, Wu; Shin, Yung C ^[1]

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1. School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

Laser shock peening (LSP) is emerging as a competitive alternative technology to classical treatments to improve fatigue and corrosion properties of metals for a variety of important applications. LSP under a water confinement regime (WCR) can produce plasma pressures on the target surface four times higher and two to three times longer than those under direct regime configurations. However, most of the published thermal models for LSP under WCR are not self-closed, and have free variables which have to come from experimental measurements under the same conditions. In this paper, a self-closed thermal model for LSP under WCR configurations is presented. This model has considered most of the relevant physical processes for laser ablation and plasma formation and expansion, and there are no free variables in the model. The simulation results for pressures from the model are compared with the available experimental results in literature under a variety of laser-pulse conditions, and good agreements are found.

• OSTI ID: 20711713
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 97; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
COMPARATIVE EVALUATIONS
CORROSION
CORROSION FATIGUE
EXPANSION
LASERS
METALS
PLASMA
PLASMA PRESSURE
PLASMA PRODUCTION
PULSES
SHOCK WAVES
SHOT PEENING
SIMULATION
WATER