A study of hypervelocity impact on cryogenic materials

K. Ohtani, Daiju Numata, T. Kikuchi, Meiu Son, K. Takayama, K. Togami

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


This paper reports a result of hypervelocity impact experiments on cryogenically cooled aluminum alloys and a composite material. Experiments are carried out on a target palate at 122 K. Aluminum spheres at 1.95 km/s in 50 kPa air were impinged against the target plate at cryogenic temperature and the result was compared with room temperature target plates. Hypervelocity impact (HVI) processes were visualized with shadowgraph arrangement and recorded with high-speed video camera and to ensure the temperature dependence we compared HVI tests with metal target plates with AUTODYN 2D and SPH numerical simulations. We found that cryogenic impacts created slight differences of impact damage from room temperature ones, i.e., the shape and averaged diameters of HVI crater holes were less at cryogenic impacts.

Original languageEnglish
Pages (from-to)555-565
Number of pages11
JournalInternational Journal of Impact Engineering
Issue number1-12
Publication statusPublished - 2006 Dec


  • Ballistic range
  • Cryogenic temperature
  • Hypervelocity impact
  • Space debris bumper shield

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Safety, Risk, Reliability and Quality
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering


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