The effect of core thickness on the flexural behaviour of aluminium foam sandwich structures

Styles, Millicent; Compston, Paul; Kalyanasundaram, Shankar

doi:10.1016/j.compstruct.2006.07.002

Cited by 102 publications

(52 citation statements)

References 10 publications

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“…As face sheets and foamable core are in close contact and the heat conductivity of the two alloys is high, temperature is approximately the same throughout the material. The material with the lower melting temper- [7], [8], [9], [10], [11], [12], [13], [14], [15], [16] steel P: [17], [14] [15] GFRP or CFRP P: [18], [19] M: [20] P: [21], [14], [22] alumina P: [23], [14][24]…”

Section: Process For Making Afs By In-situ Bondingmentioning

confidence: 99%

Aluminium Foam Sandwich Panels: Manufacture, Metallurgy and Applications

Banhart

Seeliger²

2008

Adv Eng Mater

277

139

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Sandwich panels consisting of a highly porous aluminium foam core and aluminium alloy face sheets are manufactured by roll‐bonding aluminium alloy sheets to a densified mixture of metal powders – usually Al‐Si or Al‐Si‐Cu alloys with 6–8% Si and 3–10% Cu – and titanium hydride, and foaming the resulting three‐layer structure by a thermal treatment. We review the various processing steps of aluminium foam sandwich (AFS) and the metallurgical processes during foaming, compare the process to alternative ways to manufacture AFS, e.g. by adhesive bonding, and give an overview of the available literature. Two ways to treat AFS after foaming are presented, namely forging and age‐hardening. Some current and potential applications are described and the market potential of AFS is assessed.

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Section: Process For Making Afs By In-situ Bondingmentioning

confidence: 99%

Aluminium Foam Sandwich Panels: Manufacture, Metallurgy and Applications

Banhart

Seeliger²

2008

Adv Eng Mater

277

139

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“…In construction application, a thicker and stronger core is needed to efficiently transfer the bending stress between the top and the bottom skins than in automobile and marine applications [10]. It has been demonstrated that most sandwich construction fails due to shear failure of the core material [11].…”

Section: Introductionmentioning

confidence: 99%

Behaviour of fibre composite sandwich structures under short and asymmetrical beam shear tests

Ferdous

2013

Composite Structures

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The behaviour of structural fibre composite sandwich beams made up of glass fibre composite skins and phenolic core material was investigated under three-point short beam and asymmetrical beam shear tests. The effect of the shear span-to-depth ratio (a/D) on the strength and failure behaviour of the composite sandwich beams was examined. The results showed that with increasing a/D ratio, the failure load of the sandwich beam is decreasing. On the contrary, the coupling effect of flexural stresses increases with increasing a/D ratio.Noticeably, the fibre composite sandwich beams tested under asymmetrical beam shear exhibited higher failure load compared to beams tested under short beam shear. Analysis showed that the shear stress in the core is more dominant than flexural stress when the a/D ratio is 1 for the sandwich beams under short beam test and 1 to 3 for the sandwich beams tested under asymmetrical beams shear test. The proposed prediction equation which accounts for the combined effect of shear and flexural stresses due to the changing a/D ratio, presented a good agreement with the experimental results, showing that it can reasonably estimate the failure load of structural fibre composite sandwich beams.

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“…The brittle nature of the core material causes a sudden collapse of the composite sandwich structure after the formation of the first shear crack. In structural applications, this is more critical as thicker and higher density core material is required for composite sandwich beams to transfer the shear between the top and bottom skins compared to other industrial applications (Styles et al 2007). Hence, the premature failure of the core material will have an adverse effect on the structural performance of composite sandwich beams and may be the limiting factor in designing such structures.…”

Section: Introductionmentioning

confidence: 99%

A comparison of the shear behaviour of a fibre composite sandwich structure in the transverse and in-plane directions

Ferdous¹,

Aravinthan²,

Karunasena³

2010

Incorporating Sustainable Practice in Mechanics and Structures of Materials

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This paper presents the shear behaviour of a composite sandwich structure made up of glass fibre reinforced polymer skins and high strength phenolic core material with a view of using this material as a shear loading component in a structural beam. The shear behaviour of this sandwich structure in the transverse and in-plane directions is determined using an asymmetrical beam shear test. The presence of the vertical fibre composite skins on both sides of the phenolic core material when the composite sandwich beam is loaded inplane direction resulted in a higher shear strength and a more ductile failure behaviour than the beam loaded in the transverse direction. However, the sandwich beam is more prone to indentation failure when loaded in this direction than in the transverse direction. The results of the numerical simulations using the mechanical properties of the skin and the core materials are in good agreement with the experimental results.

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The effect of core thickness on the flexural behaviour of aluminium foam sandwich structures

Cited by 102 publications

References 10 publications

Aluminium Foam Sandwich Panels: Manufacture, Metallurgy and Applications

Aluminium Foam Sandwich Panels: Manufacture, Metallurgy and Applications

Behaviour of fibre composite sandwich structures under short and asymmetrical beam shear tests

A comparison of the shear behaviour of a fibre composite sandwich structure in the transverse and in-plane directions

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