Damage Characteristics of SiC and B4C Ballistic Insert Plates Subjected to Multi-hi

doi:10.15541/jim20160667

Abstract

Abstract:

The ballistic impact tests of SiC and B₄C ballistic insert plates were conducted with 87-type 5.8 mm steel core projectile. Through the analysis on the depth of penetration in clay witness, bulge volume at the back of the ballistic insert plates, and impact damage being nondestructively tested by digital radiograph (DR), the damage characteristics of SiC and B₄C ballistic insert plates after multi-hit were investigated. Meanwhile, the microstructures and mechanical properties of ceramic materials were also studied. The results show that SiC and B₄C ballistic insert plates effectively resist 87-type 5.8 mm steel core projectile for 3 times and show good multi-hit capability. The depths of penetration in clay witness of B₄C ballistic insert plate are comparable with SiC ballistic insert plate. Compared with SiC ballistic insert plate, the volume of bulge at the back of B₄C ballistic insert plate is reduced by more than 35%, and the average diameter of the ceramic cone of B₄C ballistic insert plate is increased by more than 30%. The impact energy of the projectile is effectively absorbed by the B₄C ballistic insert plate, which attributes to the high hardness of B₄C ceramic.

Key words: ballistic insert plate, multi-hit, damage characteristics, hardness

CLC Number:

TJ04

CUI Feng-Dan, MA Tian, LI Wei-Ping, WU Guo-Qing. Damage Characteristics of SiC and B₄C Ballistic Insert Plates Subjected to Multi-hi[J]. Journal of Inorganic Materials, 2017, 32(9): 967-972.

Figures/Tables 8

Fig. 1 Schematic diagram of ballistic test system[18]

Fig. 2 Morphologies of SiC and B4C ballistic insert plates after multi-hit (a) Front face of SiC ballistic insert plate; (b) Black face of SiC ballistic insert plate; (c) Front face of B4C ballistic insert plate; (d) Black face of B4C ballistic insert plate

Table 1 Results of ballistic test

Ballistic insert plates	Ballistic number	Velocity /(m·s^-1)	Depth of indentation /mm	Volume of bulge /mm³
SiC/ UHMWPE	No.1	912	8.7	28320
	No.2	921	9.4	38740
	No.3	919	8.9	27070
B₄C/ UHMWPE	No.1	928	7.8	18570
	No.2	910	6.3	17100
	No.3	914	7.2	24110

Fig. 3 Digital radiograph of SiC and B4C ballistic insert plates after multi-hit (a) SiC ballistic insert plat; (b) B4C ballistic insert plate

Table 2 Diameter of the ceramic cone for SiC and B4C ballistic insert plates

	D₁/mm	D₂/mm	D₃/mm
SiC/UHMWPE	54.2	35.6	41.8
B₄C/UHMWPE	57.6	59.1	54.5

Fig. 4 SEM morphologies of fracture surface and EDS patterns of SiC and B4C ceramic after impact (a) SEM of SiC ceramic; (b) EDS of Si particle in SiC ceramic; (c) SEM of B4C ceramic; (d) EDS of SiC particle in B4C ceramic

Table 3 Property of SiC and B4C ballistic ceramics

Ceramics	Density /(g·cm^-3)	Elastic modulus /GPa	Flexural strength /MPa	Vickers hardness /GPa	Fracture toughness /(MPa·m^1/2)
SiC	3.07	418	445	22.9	3.6-4.0
B₄C	2.50	466	543	33.4	2.8-3.0

Fig. 5 SEM morphologies of SiC (a) and B4C (b) ceramic before impact

References 22

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Damage Characteristics of SiC and B₄C Ballistic Insert Plates Subjected to Multi-hi

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