Effects of Hardness and Toughness of Ceramic in a Ceramic Armour Module Against Long Rod Impacts

Goh, Wooi-Boon; Luo, Boyang; Zeng, Zhiqiang; Yuan, Jianming; Ng, Kok Wei Joseph

doi:10.1002/9781119543343.ch18

Proceeding of the 42nd International Conference on Advanced Ceramics and Composites

2019

DOI: 10.1002/9781119543343.ch18

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Effects of Hardness and Toughness of Ceramic in a Ceramic Armour Module Against Long Rod Impacts

Wooi-Boon Goh

Boyang Luo

Zhiqiang Zeng

et al.

Abstract: Effects of hardness and toughness of ceramic in a ceramic armour module against long rod impacts. Proceeding of the 42nd International Conference on Advanced Ceramics and Composites: Ceramic Engineering and

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Cited by 2 publications

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Simulation study on influence of component thickness on dwell-penetration transition time of long rod projectile impacting ceramic armour module

Goh

Luo

et al. 2021

J. Phys.: Conf. Ser.

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The influence of component thickness of ceramic armour performance against long rod projectile is a critical information for the process of armour design optimization. In this study, the correlation between dwell time and cover plate thickness and mechanism shift with different ceramic to backing plate thickness ratio were studied using hydrocode simulation software LS-Dyna. The projectile is a long rod projectile with a length to diameter ratio of 14 at a nominal velocity of 1.25 km/s. In this study the cover plate performance is studied based on a surrogate module configuration, where the backing thickness is 10 mm instead of the usual semi-infinite thickness backing which has minimal bending deformation. The parameters used in the simulation were calibrated against experimental data in previous studies. From the study, the cover plate needs a minimal thickness to establish dwell. For thicker cover plate, the dwell time starts to decrease due to the confinement provided by thickness of the cover, which limited the lateral flow of the cover plate. This restriction of lateral flow, resulted in pressure build-up at the ceramic surface, thus, reducing the dwell time.

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Simulation study on influence of component thickness on dwell-penetration transition time of long rod projectile impacting ceramic armour module

Goh

Luo

et al. 2021

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

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Serbest Parçacıklı Zırh Sistemlerinin Balistik Performansının Deneysel Olarak İncelenmesi

AYTAV,

IŞIK

2023

Journal of Materials and Mechatronics: A

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Recent armor studies generally rely on improving the single-shot capabilities of ceramic armors. In multi-shot studies, ballistics tests assume that there is a certain distribution, so these successive shots were not made from exact same point. With these shots, thus, the armor completely loses its effectiveness. In this study, the ballistic performance of damaged and undamaged free particle armor system in multiple hits from exact same and different points was experimentally investigated. The new armor system, consisting Al2O3 free ceramic balls, tested with 9 mm FMJ and 7.62 mm API ammunition. This armor system prevented perforation in multi-hits from the same point, and the depth of depression in ballistic clay was 9.42 mm and bullet deviation in trajectory was 27 mm. In the shots with dispersion, depression depth was limited to 3.52 mm and deviation increased with each shot. As a result, it has been found that the free particle armor system performs more ballistic efficiency than conventional armors even in the most challenging conditions. The ceramic balls, being more irregularly and densely spaced with each shot, increase the likelihood of the bullet hitting at larger angles and increase ricochet in direct proportion.

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Effects of Hardness and Toughness of Ceramic in a Ceramic Armour Module Against Long Rod Impacts

Abstract: Effects of hardness and toughness of ceramic in a ceramic armour module against long rod impacts. Proceeding of the 42nd International Conference on Advanced Ceramics and Composites: Ceramic Engineering and

Cited by 2 publications

References 9 publications

Simulation study on influence of component thickness on dwell-penetration transition time of long rod projectile impacting ceramic armour module

Simulation study on influence of component thickness on dwell-penetration transition time of long rod projectile impacting ceramic armour module

Serbest Parçacıklı Zırh Sistemlerinin Balistik Performansının Deneysel Olarak İncelenmesi

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