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Experimental Mechanics

, Volume 54, Issue 9, pp 1651–1671 | Cite as

Pointwise Explosive-Induced Pyroshock Wave Prediction Based on Numerical Conditioning of Laser Shocks

  • S.Y. Chong
  • J.-R. LeeEmail author
Article

Abstract

A pointwise explosive-induced pyroshock prediction scheme based on the numerical conditioning of laser shocks is proposed to nondestructively predict a point source pyroshock at any point. In the pyroshock prediction scheme, the estimation models of the subband envelopes of pyroshocks incorporated into the signal processing algorithm were used to numerically condition the laser shocks. The conditioned laser shocks showed the ability to predict the SRS and time-domain waveform of pyroshock signals at any point with the averaged mean acceleration difference (MAD) of 27.25 % and the averaged peak-to-peak acceleration difference (PAD) of 18.13 % respectively. Using the prediction scheme, two-dimensional (2-D) spatial conditioned laser shocks were obtained and used to visualize the pyroshock wave propagation in an interest area of 100 × 100 mm2.

Keywords

Laser shock Pyroshock prediction Shock response spectrum Pyroshock wave propagation imaging 

Notes

Acknowledgments

This research was supported by Space Core Technology Development Program (2013042548) and Leading Foreign Research Institute Recruitment Program (2011–0030065) through the National Research Foundation of Korea, funded by the Ministry of Science, ICT and Future Planning.

Supplementary material

Video 1

(WMV 6438 kb)

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Copyright information

© Society for Experimental Mechanics 2014

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringChonbuk National UniversityJeonjuSouth Korea
  2. 2.Department of Mechatronics EngineeringChonbuk National UniversityJeonjuSouth Korea
  3. 3.LANL-CBNU Engineering Institute KoreaChonbuk National UniversityJeonjuSouth Korea
  4. 4.X-NDT IncDeokjin-guSouth Korea

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