EXPERIMENTALLY-DETERMINED PLASTIC WAVE VELOCITIES IN FULLY-ANNEALED 1100F ALUMINUM (STRIKER VELOCITY 89 FT/SEC TO 788 FT/SEC)

A previously-reported experimental system for determining the large strains, surface rotations, strain rates, and plastic wave velocities during free-free axial impacts is used to investigate the behavior of fully-annealed small grain 1100F aluminum rods under impact conditions. The system employs in-surface diffraction grating strain transducers illuminated by a pulsed ruby laser, with the strain-surface rotation-time-dependent diffraction pattern recorded by high-speed streak cameras. Strain-time and plastic wave velocity-strain data are presented for free-free axial impacts of aluminum rods at striker velocities ranging from 89 ft/sec to 788 ft/sec. Strains to 5.5 percent and strain-rates to 2000 per sec are recorded. The data is compared to previously-reported data as a means of establishing the validity of the experimental technique, and as corroboration of some of the existing data.

  • Corporate Authors:

    North Carolina State University, Raleigh

    Raleigh, NC  USA  27695
  • Authors:
    • Liddell, W L
    • Steele, R S
    • Bingham, W L
    • DOUGLAS, R A
  • Publication Date: 1970-12

Media Info

  • Features: References;
  • Pagination: 32 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00025598
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: 70-11
  • Contract Numbers: N00014-68-A-0187
  • Files: TRIS
  • Created Date: Feb 11 1973 12:00AM