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A Study on the Damage Design of Military Aircraft Structure Material by Armor Piercing Bullet Hit  

Hur, Jang-Wook (Defense Aquisition Program Administration)
Hyun, Young-Jin (Korea Aerospace Industries)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.13, no.6, 2010 , pp. 1051-1057 More about this Journal
Abstract
Database for the damage reference by armor piercing bullet test was established for both tube and plate specimens having a range of thickness. As the inclined angles of hit are increasing, it has been found that penetration damage diameter tends to increases accordingly in both specimen of the tube and plate, and such penetration damage diameter on the rear side becomes bigger than those on the front side. The tube specimen showed that the damage becomes bigger when central areas rather than the peripheral were hit. Through the plate test, it also has been found that the penetration ballistic limit for Al alloy is about 25.4mm and that of stainless steel about 12.7mm. From the fatigue analysis results using the database for damage reference, it has been identified whether the safety requirements of military aircraft could be met.
Keywords
Ballistic Damage Tolerance Design; Penetration Damage Diameter; Hit Incidence Angle; Minor's Rule; Total Damage; Reduction Factor; Safe Life; Armor Piercing Bullet;
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  • Reference
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