Development and Ballistic Testing of a Functionally Gradient Ceramic/Metal Applique

Gooch, William A.; Chen, B.H.C.; Burkins, Matthew S.; Palicka, Richard; Rubin, J. J.; Ravichandran, R.

doi:10.4028/www.scientific.net/msf.308-311.614

Cited by 51 publications

(15 citation statements)

References 5 publications

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“…After demonstrating the ability of the CVFE scheme to capture the dynamic failure of FGMs, we now turn our attention to the simulation of dynamic mode I fracture in a metal-ceramic FGM system, and, in particular the Ti/TiB system that is being considered in armor applications (Gooch et al, 1999).…”

Section: Parametric Study Of Dynamic Fracture Of a Ti/tib Fgmmentioning

confidence: 99%

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Cohesive modeling of dynamic fracture in functionally graded materials

et al. 2005

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The dynamic fracture of functionally graded materials (FGMs) is modeled using an explicit cohesive volumetric finite element scheme that incorporates spatially varying constitutive and failure properties. The cohesive element response is described by a rate-independent bilinear cohesive failure model between the cohesive traction acting along the cohesive zone and the associated crack opening displacement. A detailed convergence analysis is conducted to quantify the effect of the material gradient on the ability of the numerical scheme to capture elastodynamic wave propagation. To validate the numerical scheme, we simulate dynamic fracture experiments performed on model FGM compact tension specimens made of a polyester resin with varying amounts of plasticizer. The cohesive finite element scheme is then used in a parametric study of mode I dynamic failure of a Ti/TiB FGM, with special emphasis on the effect of the material gradient on the initiation, propagation and arrest of the crack.

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Section: Parametric Study Of Dynamic Fracture Of a Ti/tib Fgmmentioning

confidence: 99%

“…Finally, we perform in Section 5 a detailed parametric study of mode I dynamic fracture of a Titanium Monoboride (TiB)/Titanium (Ti) FGM. This particular material is chosen because of its potential as protective coating in armor applications (Gooch et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Cohesive modeling of dynamic fracture in functionally graded materials

et al. 2005

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“…Several other reports concern efforts to model the penetration of multilayered materials [12][13][14][15][16][17][18][19][20][21][22]. For example, Espinosa et al [12] conducted impact recovery experiments on confined multilayered ceramic targets to identify materials and structural design issues to defeat long rod tungsten heavy alloy (WHA) penetrators.…”

Section: Introductionmentioning

confidence: 99%

“…Their studies revealed that armor containing a layer of aluminum foam produced more extensive ceramic fragmentation and less volumetric delamination of the composite backing plate than armor without such a foam interlayer. Ballistic testing of functionally graded materials comprising transitions from a ceramic cermet hard face to a metal back face were studied by Gooch et al [16]. Gupta demonstrated a concept to enhance the resilience of structures to withstand rapid impulsive loading on multilayered structures [17].…”

Section: Introductionmentioning

confidence: 99%

Development of novel multilayer materials for impact applications: A combined numerical and experimental approach

Taşdemirci

Hall

2009

Materials & Design

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a b s t r a c tA well-verified and validated numerical model was used to investigate stress wave propagation in a multilayer material subjected to impact loading. The baseline material consisted of a ceramic faceplate and composite backing plate separated by a rubber or teflon foam interlayer: several variants were investigated in which the number, type, and total thicknesses of the interlayers were altered. Comparison of the variants showed that the use of multiple teflon foam interlayers could drastically reduce the average stress in the multilayer material. Based on the numerical results, further experimental work was undertaken upon one of the variants. Very large and unexpected tensile stress oscillations were observed in the ceramic layers, leading to a refinement of the numerical model which successfully reproduced the oscillations and also demonstrated that separation of the sample layers led to trapping of the stress wave within the layers. Use of the validated numerical model allowed detailed analysis of the processes of wave transmission and demonstrates the important synergy that can exist between experimental and modeling studies. The current study provides a valuable starting point for designing future multilayer materials with specific, controlled properties.

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“…One promising possibility is to use new types of armour ceramics with improved protection capabilities. Another promising possibility is to use functionally gradient materials (FGM) as armour [1][2][3]. A simple FGM can be seen as a stack of ceramic-metallic composites (CMC) where each layer has a different composition in order to get the desired mechanical properties of the complete structure [4,5].…”

Section: Introductionmentioning

confidence: 99%