Characterization of Flexural Properties of Syntactic Foam Core Sandwich                 Composites and Effect of Density Variation

Gupta, Nïkhil; Woldesenbet, Eyassu

doi:10.1177/0021998305052037

Cited by 86 publications

(68 citation statements)

References 20 publications

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“…In general, the specimens can fracture under two types of loads, horizontal load and vertical load. Hence, crack location and propagation directions can give an evaluation in determining the type of load that causes specimen failure [16]. It was observed that in all specimens, the failure process can be observed in the tensile side firstly and then followed by a sudden (NSF) or slow (SF-WKSF) failure.…”

Section: Flexural Properties Of Sf-wksf and Neat Syntactic Foammentioning

confidence: 99%

See 1 more Smart Citation

Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Zhi

Long

2016

Autex Research Journal

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The aim of this study was to investigate the flexural behaviours of syntactic foam reinforced by warp knitted spacer fabric (SF-WKSF). Seven kinds of SF-WKSF samples were fabricated by warp knitted spacer fabric (WKSF) with structural parameters including surface layer structures, inclination-angle and fineness of spacer yarns, different microballoons types and contents. The flexural tests were carried out and the bending properties of SF-WKSF were analysed based on the strength and modulus values obtained from the test results. It is indicated that the SF-WKSF shows higher flexural strength and modulus compared to neat syntactic foam with almost no impact on the density of composites. The results also demonstrate that the surface layer structure, inclination-angle of spacer yarns, microballons content and type have significant effects on the flexural responses of SF-WKSF. The composites exhibit better antibending capacities by selecting larger inclination-angle, closer surface layer structure, higher density and relatively higher content of S60HS microballoons.

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Section: Flexural Properties Of Sf-wksf and Neat Syntactic Foammentioning

confidence: 99%

“…Many researchers have investigated the flexural properties of various syntactic foams [3][4][5][6]. Results of these researches showed that the addition of microballoons could reduce the densities of materials.…”

Section: Introductionmentioning

confidence: 99%

Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Zhi

Long

2016

Autex Research Journal

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“…Syntactic foams have completely closed cells and therefore absorb water to a lesser degree compared to conventional foams which have open-cell structure [50,73,74,77,80]. Moisture absorption in syntactic foams is affected by a large number of parameters.…”

Section: Features Of Syntactic Foamsmentioning

confidence: 99%

Syntactic Foams

John¹,

Nair²

2014

Handbook of Thermoset Plastics

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“…Gupta et al [2] studied the behavior of sandwich-structured composites with syntactic foam core under three-point bending for both beams with large (16:1) and short (5:1) aspect ratio and gave a method to analyze failure of these structures. Gupta et al [3] studied the effect of microballoon radius ratio on the flexural properties of sandwich composites with syntactic foam core and their results show that in three and four point bending the radius ratio does not have any effect on the failure of the beam. They also gained the result that in case of shear failure in short beam shear test microballoon radius ratio plays an important role in determining the strength of the sandwich.…”

Section: Introductionmentioning

confidence: 99%

Bending behavior of sandwich structures with flexible functionally graded core based on high-order sandwich panel theory

Lashkari

Rahmani

2015

Meccanica

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In this study the problem of a sandwich beam with functionally graded (FG) core is attended with use of higher order sandwich panel theory forcing no pre-determined assumptions setting limits to the displacement and stress fields in the core. Face-sheets are analyzed using classical beam theory and the core is subjected to elasticity formulation. Governing equations and boundary conditions are derived using the principle of virtual displacements and governing equations based on five primary variables are solved using Navier's solution. This method yields nonlinear patterns of displacements in the core and as a result it can manage to present localized effects of the core including the change in the core thickness under the load point which is an improvement on the previous classical and higher order theories. This present theory can handle any type of loadings distributed or concentrated and also any type of boundary conditions even when at the same edge, upper and lower facesheets do not have the same boundary conditions. The solution is compared with present literature for a beam with conventional core. The results indicate positive effects of using FG core to reduce the possibility of delamination of the structure at interfaces between the upper and lower face-sheets and the core.

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Characterization of Flexural Properties of Syntactic Foam Core Sandwich Composites and Effect of Density Variation

Cited by 86 publications

References 20 publications

Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Flexural Properties of Syntactic foam Reinforced by Warp Knitted Spacer Fabric

Syntactic Foams

Bending behavior of sandwich structures with flexible functionally graded core based on high-order sandwich panel theory

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