FRACTOGRAPHIC ANALYSES OF DENSIFIED CERAMICS AND GLASS-CERAMICS BALLISTICALLY IMPACTED BY CALIBER .30 M2 PROJECTILES
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA
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Utilizing low magnification, fractographic analyses was conducted on low-temperature densified ceramics and glass-ceramics ballistically impacted by caliber .30 M2 projectiles. From examinations of fracture-exposed surfaces, the macroscopic sequence of ballistic fracture occurring outside the initial conoid was determined and found to be qualitatively similar for both material classes and for impact by both BALL and AP projectiles. Observations indicate that a number of imperfections such as irregularities in as-received specimen surfaces and internal macroporosity induce alterations in ballistic crack fronts.
- Ceramics, Refractories and Glass