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  United States  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

• TRT Terms: Diffraction; Plasticity; Structural analysis; Wave motion
• Subject Areas: Marine Transportation; Materials;

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