4.6 Article

Effects of an absorptive coating on the dynamics of underwater laser-induced shock process

Journal

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 116, Issue 3, Pages 1109-1117

Publisher

SPRINGER
DOI: 10.1007/s00339-013-8193-2

Keywords

-

Funding

  1. Japan Society for the Promotion of Science [22360060]
  2. Amada Foundation for Metal Work Technology [AF-2009217]
  3. Grants-in-Aid for Scientific Research [22360060] Funding Source: KAKEN

Ask authors/readers for more resources

The effects of an absorptive coating on the dynamics of underwater laser-induced shock process have been observed from the end of laser pulse to hundreds of microseconds after irradiation by time-resolved imaging techniques. A laser pulse of 13 ns at 1,064 nm was focused by a 40-mm focal length lens onto the surface of epoxyresin blocks immersed in water to induce the shock process in the confining regime. A custom-designed time-resolved photoelasticity imaging technique and a high-speed laser stroboscopic videography technique in photoelasticity mode were used to analyze the evolution of shock waves in the water phase, the strength of stress waves in the solid phase, the oscillation of cavitation bubbles, and the generation of bubble-collapse-induced shock waves. We showed that black paint coating enhances the strength of laser-induced stress wave inside the solid, drives faster shock waves traveling in the water phase, and produces higher-energy cavitation bubbles. We propose that even at power densities of 1 GW/cm(2) and above, an absorptive coating can intensify the shock process by enhancing the absorption of laser energy by plasma.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available