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Abstract : Quasi-static and dynamic damage mechanisms in alumina tiles were investigated. The tiles were under a variety of boundary conditions at the tile-s edges during impac. NATO 0.3 cal. AP rounds with hardened and sharpened steel core were used. The alumina tile samples were 50x50 mm2 area, the thicknesses ranging from 5 to 12 mm. The tiles were mounted in a special confinement frame, which enabled to investigate the failure mechanisms under a large variety of boundary conditions. Steel and Spectra composite were used as backing plates, for their distinct modulus of elasticity and acoustic impedance. Three different support configurations were used : semi-infinite, thick walled, and simply supported.





Autor: D. Sherman

Fuente: https://hal.archives-ouvertes.fr/



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