Title

Temperatures, Pressures And Stresses During Laser Shock Processing

Keywords

Ablative; Confined ablative; Non-ablative; Pressures; Shock processing; Stresses; Temperatures

Abstract

Mathematical models are developed to calculate the temperatures, pressures and stresses during laser shock processing for time-modulated (ramp-up, ramp-down and rectangular) laser pulses. Three different shock processing configurations are also considered: non-ablative exposure, ablative exposure and confined ablation with coating. The results for iron show that the plasma pressure reaches an average value of 9GPa in direct ablation configuration and plays a dominant role for all three types of laser pulses. In the case of confined geometry, the plasma pressure reaches an average value of 20GPa. All calculated pressures and stresses exceed the yield strength of the workpiece, indicating plastic deformation. It is also shown that pulses with short rise times yield higher plasma pressures. © 2002 Published by Elsevier Science Ltd.

Publication Date

1-1-2003

Publication Title

Optics and Lasers in Engineering

Volume

39

Issue

1

Number of Pages

51-71

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0143-8166(02)00040-4

Socpus ID

0037209641 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037209641

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