Surface Preparation of Alumina for Improved Adhesive Bond Strength in Armor Applications

Harris, Andrew; Vaughan, B.; Yeomans, J. A.; Smith, Paul A.; Burnage, Steve

doi:10.1002/9781118217498.ch14

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…10,61 Therefore, dethatching and sliding of the adjacent surfaces are inhibited until the interface failure criterion, given by equation (19), is met: where S n is the interfacial normal stress strength and S s is the interfacial shear stress strength which were considered to be equal to 31 and 30 MPa, respectively. 33…”

Section: Fe Simulationsmentioning

confidence: 99%

“…The thickness of the ceramic to ceramic bonding interlayer affects the ballistic performance of the armor as well as the overall armor integrity. 29,33 For epoxy resin interlayer, higher ballistic performances are obtained for a thickness of 0. Ceramic laminated armors are presented in five (05) configurations.…”

Section: Monolithic Versus Laminated Ceramic Front Platesmentioning

confidence: 99%

“…where S n is the interfacial normal stress strength and S s is the interfacial shear stress strength which were considered to be equal to 31 and 30 MPa, respectively. 33 For modeling composite delamination, each ply was modeled with a layer of solid elements and bonded with a tiebreak contact. The delamination occurs when the failure criterion given by equation ( 18) is reached.…”

Section: Numerical Modelsmentioning

confidence: 99%

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Performance evaluation of multilayered ceramic composite armors: New design and advanced predictive method

Tria

Kouadria

Małachowski

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Novel body armors are designed to protect against ballistic threats in the most vulnerable organs within the thorax and abdomen. Decreasing the armor weight without affecting its total integrity after the impact is one of the most challenging tasks. In this study, we combine advanced numerical simulations and experimental tests to investigate the ballistic performance of multilayered armor systems (MAS) consisting of laminated alumina (Al2O3) ceramic plates with multi-curve form and a hybrid composite backing. The ballistic trauma absorption and ceramic fracturing morphology are considered evaluation criteria. The investigation provides enough data on the measured trauma and the results are compared to advanced monolithic ceramics. The ballistic tests showed that bonding three or two ceramic plates with polymeric interlayer decreases considerably the eroded ceramic mass in comparison to monolithic ceramic tiles. Furthermore, the layup of two thin Al2O3 tiles with frontal confinement gives the same trauma-weight index as monolithic silicon carbide and reaction-bonded boron carbide plates. The combination of K129 and KM2 aramid weave fabrics decreases the composite backing weight by 33% and increases its ballistic performance in comparison to homogeneous aramid fabrics. Numerical simulations that involve the use of solid Lagrange and adaptive solid/smooth particles hydrodynamics (SPH) numerical approaches with detailed 3D models of the bullet and the MAS are presented in this work. Based on the statistical analysis, a better prediction of the back face deformation and bullet residual length is obtained by the adaptive solid/SPH method, which is found more suitable for the simulation of multilayered armor impact scenarios.

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Section: Fe Simulationsmentioning

confidence: 99%

Section: Monolithic Versus Laminated Ceramic Front Platesmentioning

confidence: 99%

Section: Numerical Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Performance evaluation of multilayered ceramic composite armors: New design and advanced predictive method

Tria

Kouadria

Małachowski

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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show abstract

“…Chemical changes to the surface of the ceramic can be brought about by laser ablation and these changes have resulted in improved wettability . In previous research, these techniques were applied to alumina and silicon carbide, specifically for armor applications. Sets of samples for each surface preparation were tested quasi‐statically in tension and shear.…”

Section: Introductionmentioning

confidence: 99%

Ballistic testing of surface‐treated alumina and silicon carbide with improved adhesive bond strength

Harris

Vaughan

Yeomans

et al. 2017

Int J Applied Ceramic Tech

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The laser treatment of ceramics can lead to increased concentrations of hydroxyl ions on the surface, resulting in improved adhesive bond strength in quasi‐static tests. Whether the improvement can be translated to armor applications is investigated here. The ballistic testing of composite‐backed, surface‐treated, and nontreated “control” alumina and silicon carbide panels was undertaken. The failure locus of the ceramic to adhesive/composite joint and the qualitative degree of damage were assessed. Laser surface‐treated samples performed better than control samples, with silicon carbide moving from single shot to multi‐shot capability, thus giving significant advantages for the deployment of these materials.

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The impact of backplate support conditions on ceramic fracture and energy absorption in the penetration resistance process of ceramic/metal composite armor

Yu,

Wang,

et al. 2024

Ceramics International

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Surface Preparation of Alumina for Improved Adhesive Bond Strength in Armor Applications

Cited by 6 publications

References 10 publications

Performance evaluation of multilayered ceramic composite armors: New design and advanced predictive method

Performance evaluation of multilayered ceramic composite armors: New design and advanced predictive method

Ballistic testing of surface‐treated alumina and silicon carbide with improved adhesive bond strength

The impact of backplate support conditions on ceramic fracture and energy absorption in the penetration resistance process of ceramic/metal composite armor

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