HIGH STRAIN RATE STUDIES OF ARMOR METALS

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Authors
  1. Nazimuddin, G.
  2. Polyzois, I.
  3. Bolduc, M.
  4. Bassim, M.N.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Manitoba Univ, Winnipeg MAN (CAN) Dept of Mechanical Engineering
Abstract
This paper investigates the dynamic stress strain response of armor metals subjected to high strain rate loading and large strains. These armor metals, supplied by the Canadian Department of National Defense (CDND), namely maraging steel 300, high hardness armor (HHA) and aluminum 5083- H131 alloy, are used in armor plating for military vehicles. Specimens were tested in compression using a Direct Impact Split Hopkinson Pressure Bar (SHPB) at multiple impact momenta. Dynamic stress strain response data are collected to study the plastic deformation behavior. Specimens are observed under optical microscopy, Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) to study the occurrence of adiabatic shear bands which are the primary source of shear failure under these conditions. The effects of impact momentum on the dynamic response and adiabatic shear failure are analyzed to evaluate the materials capability of withstanding conditions similar to those observed in the field.
Report Number
DRDC-VALCARTIER-SL-2011-550 — Scientific Literature
Date of publication
01 Jun 2011
Number of Pages
4
DSTKIM No
CA037852
CANDIS No
537687
Format(s):
Electronic Document(PDF)

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