The Damage Mechanism Route to Better Armor Materials

This paper describes the mechanisms by which brittle materials are penetrated by impacting projectiles, links ballistic performance to fracture behavior, and in turn to microstructure, and suggests a route unexplored previously for achieving better armor materials. Fracture patterns on cross section...

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Published in:International journal of applied ceramic technology 2010-09, Vol.7 (5), p.566-573
Main Authors: Shockey, Donald A., Simons, Jeffrey W., Curran, Donald R.
Format: Article
Language:English
Subjects:
Armor
Armour
Ceramics
Flow resistance
Fracture mechanics
Fragments
Mathematical analysis
Mathematical models
Microstructure
Projectiles
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description This paper describes the mechanisms by which brittle materials are penetrated by impacting projectiles, links ballistic performance to fracture behavior, and in turn to microstructure, and suggests a route unexplored previously for achieving better armor materials. Fracture patterns on cross sections through partially penetrated glass and ceramic targets show that deep penetration proceeds by the crushing and subsequent flow of fragments away from the projectile path. Preliminary finite element simulations indicate the likely positive effect of increasing frictional flow resistance of fragments. Tests are envisioned for measuring crush and fragment flow behavior, showing the effects of microstructural variables, guiding mathematical models, and hence leading to a capability to design computationally improved armor materials and structures.
doi_str_mv 10.1111/j.1744-7402.2010.02509.x
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source Wiley-Blackwell Read & Publish Collection
subjects Armor
Armour
Ceramics
Flow resistance
Fracture mechanics
Fragments
Mathematical analysis
Mathematical models
Microstructure
Projectiles
title The Damage Mechanism Route to Better Armor Materials
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