Ultrasonic evaluation of the impact damage of polymer bonded explosives

Peng Wan Chen*, Kai Da Dai, Feng Lei Huang, Yan Sheng Ding

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The damage properties of polymer bonded explosives under dynamic loading were studied by using ultrasonic evaluation. Explosive samples were damaged by a low-velocity gas gun at different impact velocities. Ultrasonic examination was carried out with a pulse through-transmission method. Spectra analyses were carried out by using fast Fourier transform. Characteristic ultrasonic parameters, including ultrasonic velocities, attenuation coefficients, spectra area and master frequency, were obtained. The correlation between the impact damage and ultrasonic parameters was analyzed. A damage coefficient D was defined by considering a combination of ultrasonic velocity and amplitude. The results show that ultrasonic parameters can be used to quantitatively assess the damage extent in impacted plastic bonded explosives.

Original languageEnglish
Pages (from-to)242-246
Number of pages5
JournalJournal of Beijing Institute of Technology (English Edition)
Volume13
Issue number3
Publication statusPublished - Sept 2004

Keywords

  • Impact damage
  • Polymer bonded explosives
  • Ultrasonic evaluation

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