Experimental study of hypervelocity impacts at low temperatures

Daiju Numata, K. Ohtani, M. Anyoji, K. Takayama, Meiu Son

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


This paper reports the results of hypervelocity impact (HVI) experiments on cryogenic aluminum alloys at 122 K. Target plates were impinged by room temperature aluminum spheres at speeds ranging from 1 to 3.7 km/s in air at 10 Pa. The results were compared with HVI results at room temperature. We visualized the HVI processes by shadowgraph and recorded them with a digital high-speed video camera. We showed temperature effects of target plate physical properties on the formation of debris clouds and impact craters and hence the shielding efficiency of aluminum alloys at low temperature.

Original languageEnglish
Pages (from-to)169-183
Number of pages15
JournalShock Waves
Issue number3
Publication statusPublished - 2008 Aug


  • Ballistic range
  • Hypervelocity impact (HVI)
  • Low temperature
  • Space debris bumper shield

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)


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