Light-Weighting in Transportation and Defence Using Aluminium Foam Sandwich Structures

Banhart, John; García‐Moreno, Francisco; Heim, K.; Seeliger, Hans-Wolfgang

doi:10.1007/978-981-15-1263-6_5

Cited by 29 publications

(35 citation statements)

References 6 publications

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“…The outer sheets bear the tensile loads while the foam core contributes to absorbing static and dynamic impact energies [3]. Most recently Al-alloy metal foam parts were developed by the Technical University Berlin and Pohltec Metalfoam used in the prototype of an ultra-light electric vehicle recently developed in a European project [4].…”

Section: Introductionmentioning

confidence: 99%

“…The addition of Ti traces to the Al-Si-Mg system is suggested to be further beneficial as the diffusion of Ti atoms towards Al is more pronounced than Al atoms towards Ti [9]. The advantage of replacing Cu with Mg is the improved corrosion resistance [4]. The disadvantages of bonding Al-alloy sheets to Al-alloy foam by the foaming process include the restricted set of possible alloy combinations for the core and face sheet due to the necessity to coordinate the melting temperatures of the core and the sheet, the need to use expensive metal powders, and the high number of processing steps [7].…”

Section: Introductionmentioning

confidence: 99%

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Joining of Aluminium Alloy Sheets to Aluminium Alloy Foam Using Metal Glasses

Bangash

Ubertalli

Saverio

et al. 2018

Metals

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Aluminium alloy foam is a lightweight material with high energy absorption properties and can potentially replace bulk Al-components. The aim of this work is to develop a brazing technique to join aluminium facing sheets to aluminium alloy foam to obtain aluminium foam sandwich panels for applications where high service temperature is a requirement. Al-6016 alloy sheets were brazed to aluminium alloy foam using two aluminium based (Al-Cu-Mg and Al-Si-Mg-Ti) metal glasses at 560 • C-590 • C in an argon atmosphere. Microstructure and microhardness profiles of the aluminium alloy sheet/aluminium alloy foam brazed joints were analysed using a microhardness tester and scanning electron microscope equipped with electron dispersion spectroscopy. A three-point bending test was conducted to study the flexural behaviour of the aluminium foam sandwich composite panels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Joining of Aluminium Alloy Sheets to Aluminium Alloy Foam Using Metal Glasses

Bangash

Ubertalli

Saverio

et al. 2018

Metals

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“…This is due to attractive mechanical properties such as high specific bending stiffness and high bending strength. Strong metallic bonding was observed for the Al alloy face sheets and cores during new integrated AFS manufacturing process . However, sandwich structures with nonmetallic face sheets and polymer foam cores show less debonding strength compared to their metallic counterparts.…”

Section: Innovative Foam Sandwichmentioning

confidence: 97%

“…Hybrid design provides new possibilities for multifunctionality combining mechanical, thermal, and electromagnetic properties . The diversity of the possible configurations, enhanced mechanical properties, being light‐weight with a high specific strength, and more importantly multifunctionality make sandwich structures a superior material choice in aerospace engineering, automobiles, marine engineering, etc …”

Section: Introductionmentioning

confidence: 99%

Sandwich Structures with Prismatic and Foam Cores: A Review

Xiong

Mousanezhad³

et al. 2018

Adv Eng Mater

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This article provides a comprehensive review of recent research efforts on the development and characterization of sandwich structures with corrugated, honeycomb, and foam cores. The topics discussed in this review article include aspects of core-face bonding and reinforcement, enhancement of core mechanical properties and panel performance (including the role of structural hierarchy), and multifunctional advantages offered by different core constructions. In addition, the review discusses potential applications, including in morphing wing design, impact resistance, and ultralightweight applications. Future research directions are discussed.

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“…As a new class of light-weight and multi-functional materials relative to traditional metals and alloys, metal foams have been increasingly used in various engineering applications across many industrial sectors, such as aerospace (Ryan and Christiansen, 2013), automobile (Banhart et al, 2017) and healthcare (Gibson et al, 2010). The unique cell structures of metal foams give rise to extraordinary material properties.…”

Section: Introductionmentioning

confidence: 99%

Cutting-induced end surface effect on compressive behaviour of aluminium foams

Meng

Chai²,

Sun

et al. 2019

European Journal of Mechanics - A/Solids

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Three cutting methods, i.e. electrical discharge machining (EDM), band saw (BS) and water jet (WJ), were used to prepare cuboid samples of closed-cell aluminium Alporas foam. On the end surfaces of the prepared samples, local roughness of mesoscopic structural components (i.e. cell wall, node and facet) and global roughness for the entire cut surface were measured using confocal microscopy. Furthermore, quasi-static uniaxial compression tests were performed with intermittent unloading-reloading. In the initial stage of compression, the measured loading stiffness and unloading elastic modulus are highest, intermediate and lowest for the EDM-cut, BS-cut and WJ-cut samples, respectively. This difference in measured compressive properties has been correlated with the difference in end-surface roughness associated with different cutting methods. However, the peak and plateau of compressive stress and the unloading elastic modulus in the plateau stage are insensitive to cutting method. An analytical model has been developed to elucidate the observed compressive behaviour and shed light on the responsible mechanisms.

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Light-Weighting in Transportation and Defence Using Aluminium Foam Sandwich Structures

Cited by 29 publications

References 6 publications

Joining of Aluminium Alloy Sheets to Aluminium Alloy Foam Using Metal Glasses

Joining of Aluminium Alloy Sheets to Aluminium Alloy Foam Using Metal Glasses

Sandwich Structures with Prismatic and Foam Cores: A Review

Cutting-induced end surface effect on compressive behaviour of aluminium foams

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