Axial crush performance of polymer-aluminium alloy hybrid foam filled tubes

Duarte, Isabel; Krstulović‐Opara, Lovre; Dias-de-Oliveira, João; Vesenjak, Matej

doi:10.1016/j.tws.2019.01.040

Cited by 79 publications

(27 citation statements)

References 31 publications

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“…The EP and EP/GO specimens, as well as the corresponding hybrid structures (OCF-EP and OCF-EP/GO), do not exhibit a typical metal foam stress-strain behavior. The compressive stress-strain curves of the EP, EP/GO, OCF-EP, and OCF-EP/GO specimens are very similar to the compressive response obtained from the empty aluminum tubes, in-situ closed-cell foam-filled tubes and polymer-open-cell aluminum foam-filled tubes [21,31,32]. The initial quasi-linear elastic region up to the peak stress is followed by a rapid stress drop region to a given minimum value of stress, and then by the stress fluctuation region until the abrupt final densification.…”

Section: Mechanical Propertiessupporting

confidence: 61%

“…Several methods (e.g., ball milling, solvent-assisted, ultrasonication, or surface modification) [20] have been explored for preparation of these type of nanocomposite materials in order to ensure the good dispersion of nanofillers into the polymer matrix. The work herein follows the previous pioneering studies performed by Duarte et al [8,21], where they evaluated the quasi-static and dynamic crush compressive performance of simple multifunctional hybrid structures based on an open-cell aluminum foam impregnated with polymers (e.g., epoxy resin) and their performance as fillers of square thin-walled tubes. Results demonstrate that the polymer-aluminum hybrid structure stabilizes the tube and prevents the unstable global bending or mixed buckling mode.…”

Section: Introductionmentioning

confidence: 99%

“…Results demonstrate that the polymer-aluminum hybrid structure stabilizes the tube and prevents the unstable global bending or mixed buckling mode. Studies show that the aluminum foam-epoxy hybrid structure-filled structures are more efficient in terms of crashworthiness [21]. Herein, the graphene oxide at a low content load of 0.25 wt.% was studied as reinforcement of the epoxy matrix, used as a void filler of the open-cell foam.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical, Thermal, and Acoustic Properties of Aluminum Foams Impregnated with Epoxy/Graphene Oxide Nanocomposites

Pinto

Marques

Vesenjak

et al. 2019

Metals

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Hybrid structures with epoxy embedded in open-cell aluminum foam were developed by combining open-cell aluminum foam specimens with unreinforced and reinforced epoxy resin using graphene oxide. These new hybrid structures were fabricated by infiltrating an open-cell aluminum foam specimen with pure epoxy or mixtures of epoxy and graphene oxide, completely filling the pores. The effects of graphene oxide on the mechanical, thermal, and acoustic performance of epoxy/graphene oxide-based nanocomposites are reported. Mechanical compression analysis was conducted through quasi-static uniaxial compression tests at two loading rates (0.1 mm/s and 1 mm/s). Results show that the thermal stability and the sound absorption coefficient of the hybrid structures were improved by the incorporation of the graphene oxide within the epoxy matrix. However, the incorporation of the graphene oxide into the epoxy matrix can create voids inside the epoxy resin, leading to a decrease of the compressive strength of the hybrid structures, thus no significant increase in the energy absorption capability was observed.

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Section: Mechanical Propertiessupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical, Thermal, and Acoustic Properties of Aluminum Foams Impregnated with Epoxy/Graphene Oxide Nanocomposites

Pinto

Marques

Vesenjak

et al. 2019

Metals

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“…However, a new approach also shows the possibility of using open-pored hybrid foams as structural elements. The results of Vesenjak et al [ 4 ] and Duarte et al [ 5 ] show promising results for tubes filled with open-pored hybrid foams for use as structural elements. This study focuses on hybrid foams whose struts are coated by an electro-deposition process.…”

Section: Introductionmentioning

confidence: 99%

Micromechanical Characterisation of Ni/PU Hybrid Foams

et al. 2020

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The computer-aided design of individual parts and the desire for weight reduction and material savings require further development of new hybrid materials. Ni/PU hybrid foams as a new hybrid material offer great potential for the production of components that are lightweight and yet can absorb large amounts of energy. The development of this structured material is at its beginning and mechanical characterisation on all scales is necessary. Experimental investigations on individual struts must be carried out on the micro scale to understand the structure-properties-relationship. Inspite of the challenges raising due to the complex geometry of the struts, tensile tests, three-point bending tests and micro sections are presented in this work. Due to the stiff Ni coating on the outer diameter of the struts, the resistance against bending is around five times as high as against tensile loading. The correlation between the behaviour of the struts and the macroscopic material behaviour validates the planned use of the foams as energy absorbers.

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“…Syntactic foams are prepared by infiltrating a metal melt into the interstice's spaces of a packed hollow spheres made of metal or ceramic or porous particles [15,16]. Hybrid foams are prepared by impregnating an open-cell metal foam with a polymer [17]. Despite these developments, the closed-cell metallic foams prepared by the traditional powder metallurgy method have several advantages in comparison with other new cellular metals.…”

Section: Introductionmentioning

confidence: 99%

Automated Continuous Production Line of Parts Made of Metallic Foams

Duarte

Vesenjak

Vide³

2019

Metals

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The paper presents an automated continuous production line (7 m × 1.5 m × 1 m) of high-quality metallic foams using a powder metallurgical method. This continuous production line was used to obtain metal foam parts and/or components by heating the foamable precursor material at melting temperatures close to the temperature of the metallic matrix and cooling the formed liquid metallic foam (in liquid state), which then results in a solid closed-cell metallic foam. This automated continuous production line is composed of a continuous foaming furnace, a cooling sector and a robotic system. This installation has enabled a technological breakthrough with many improvements solving some technical problems and eliminating the risks and dangers related to the safety of workers due to the high temperatures involved in this process. The whole process becomes automatic without any need for human intervention.

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Axial crush performance of polymer-aluminium alloy hybrid foam filled tubes

Cited by 79 publications

References 31 publications

Mechanical, Thermal, and Acoustic Properties of Aluminum Foams Impregnated with Epoxy/Graphene Oxide Nanocomposites

Mechanical, Thermal, and Acoustic Properties of Aluminum Foams Impregnated with Epoxy/Graphene Oxide Nanocomposites

Micromechanical Characterisation of Ni/PU Hybrid Foams

Automated Continuous Production Line of Parts Made of Metallic Foams

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