Real-Time Ballistic Impact Deformation and Strain Measurements of Transparent TROGAMID Polyamides

Report No. ARL-TN-449
Authors: Alex J. Hsieh; Jian H. Yu; John W. Song
Date/Pages: September 2011; 18 pages
Abstract: Dynamic deformation of two transparent TROGAMID polyamide materials upon ballistic impact is analyzed by utilizing a photogrammetric technique known as digital imaging correlation. The extent of out-of-plane deformation and shear deformation is greater in TROGAMID CX-7323 than in TROGAMID T-5000. These real-time, full-field deformation measurements at various impact velocities enable the differentiation and validation of mode of failure, which is not obtainable directly from the MIL-SPEC V50 measurements, between the two select polyamide materials. TROGAMID CX-7323 is more ductile than TROGAMID T-5000, despite their similar V50 values.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2011