Effect of Cell Wall Ductility and Toughness on Compressive Response and Strain Rate Sensitivity of Aluminium Foam

Byakova, A. V.; Gnyloskurenko, Svyatoslav; Vlasov, A. O.; Semenov, N. V.; Yevych, Yan; Zatsarna, Oleksandra; Danilyuk, Vladimir

doi:10.1155/2019/3474656

Cited by 5 publications

(3 citation statements)

References 58 publications

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“…But the micro-inertia effects become prominent at higher SRs where cell wall buckling is suppressed by the inertia of the cell walls. The strain localization by the micro-inertia effect increases the plastic strength of the foam [40,41].…”

Section: Discussionmentioning

confidence: 99%

Exploring the Influence of B4Cp Concentration and Strain Rate on the Compressive Loading Behavior of Closed Cell Al2024-B4Cp Composite Foams for Enhanced Energy Absorption Applications

Singh,

Sharma,

Kumar

et al. 2024

Preprint

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Aluminum foams find extensive applications in the automotive, marine, and defence industries, owing to their exceptional properties like high specific strength and the ability to absorb energy effectively under constant stress. In the current study, the aluminum composite foams (ACFs) reinforced with different wt% (n=2,4,6,8 and 10) of B4Cp (21-30µm) have been developed by stir casting method and their compressive properties at quasi-static (0.001s-1), intermediate (1s-1) and dynamic loading (680s-1) have been investigated. The study shows that adding B4Cp up to 8wt% initially increases foam expansion and cell size, followed by a decrease, while relative density and cell wall thickness exhibit the opposite trend. At all tested strain rates, the compressive properties such as peak stress, average plateau stress, and energy absorption capacity show a consistent increase with the rise in B4Cp wt%. The density normalized average plateau stress confirmed the strengthening effect due to B4Cp addition in the foam. The developed aluminum foams exhibit strain rate sensitivity in their average plateau stress.

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Section: Discussionmentioning

confidence: 99%

Exploring the Influence of B4Cp Concentration and Strain Rate on the Compressive Loading Behavior of Closed Cell Al2024-B4Cp Composite Foams for Enhanced Energy Absorption Applications

Singh,

Sharma,

Kumar

et al. 2024

Preprint

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show abstract

“…It is also evident that the lowest plateau force measured at the deformation of 30.4% is reached as the internal pore walls come into contact at the deformation of 30%. The contact of internal pore walls prevents further pore deformation in the local region, increasing the region stiffness [ 52 ]. The sample continues to deform in stiffer regions.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Advanced Pore Morphology (APM) Foam Elements Using Compressive Testing and Time-Lapse Computed Microtomography

et al. 2021

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Advanced pore morphology (APM) foam elements are almost spherical foam elements with a solid outer shell and a porous internal structure mainly used in applications with compressive loading. To determine how the deformation of the internal structure and its changes during compression are related to its mechanical response, in-situ time-resolved X-ray computed microtomography experiments were performed, where the APM foam elements were 3D scanned during a loading procedure. Simultaneously applying mechanical loading and radiographical imaging enabled new insights into the deformation behaviour of the APM foam samples when the mechanical response was correlated with the internal deformation of the samples. It was found that the highest stiffness of the APM elements is reached before the appearance of the first shear band. After this point, the stiffness of the APM element reduces up to the point of the first self-contact between the internal pore walls, increasing the sample stiffness towards the densification region.

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“…Schematic presentation of compression stress–strain curves for porous Al and Al foam showing the linear elastic, plateau, and densification regimes: plastic cell collapse (a), cell collapse partially affected by fracture mode 76 (open access article distributed under the creative common attribution license copyright © 2019 Alexandra Byakova et al).…”

Section: Mechanical Behavior Of Aluminum Metal Foammentioning

confidence: 99%

A review of the compressive properties of closed-cell aluminum metal foams

Nisa

Pandey

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Materials scientists and engineers have been trying to create porous metals and metal foams for many years. Naturally occurring porous materials such as bone, coral, cork, balsa wood, etc., are responsible for initiating research in the area of producing porous metals and metal foams. Metal foam is a cellular structure made up of a solid metal-containing a large volume fraction of gas-filled pores. These pores can either be sealed (closed-cell foam), or they can be an interconnected network (open-cell foam). The closed-cell foam is referred to as metal foams, while the open-cell foam is referred to simply as porous metal. Some of the key properties of the metal foam are, ultra-light material (75–95% of the volume consists of void spaces), very high porosity, and high compression strengths combined with good energy absorption characteristics. This paper provides a comprehensive review of mechanical characterizations of closed-cell aluminum metal foams (CCAFs) or porous aluminum alloys, the trends in their mechanical behavior specifically their compressive performance. The significant factors influencing this behavior are intricately studied in light of the available literature. The aim of this work is to facilitate a channelized development over the past few decades in the field of mechanical behavior of CCAF that may be of help to the researchers, academicians, and industries for the critical understanding of the failure criteria and mechanical properties of closed-cell aluminum metal foams.

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Effect of Cell Wall Ductility and Toughness on Compressive Response and Strain Rate Sensitivity of Aluminium Foam

Cited by 5 publications

References 58 publications

Exploring the Influence of B4Cp Concentration and Strain Rate on the Compressive Loading Behavior of Closed Cell Al2024-B4Cp Composite Foams for Enhanced Energy Absorption Applications

Exploring the Influence of B4Cp Concentration and Strain Rate on the Compressive Loading Behavior of Closed Cell Al2024-B4Cp Composite Foams for Enhanced Energy Absorption Applications

Analysis of Advanced Pore Morphology (APM) Foam Elements Using Compressive Testing and Time-Lapse Computed Microtomography

A review of the compressive properties of closed-cell aluminum metal foams

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