Reference : Open-Cell Aluminium Foams with Graded Coatings as Passively Controllable Energy Absorbers
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Engineering, computing & technology : Civil engineering
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Mechanical engineering
Engineering, computing & technology : Multidisciplinary, general & others
Computational Sciences
http://hdl.handle.net/10993/19431
Open-Cell Aluminium Foams with Graded Coatings as Passively Controllable Energy Absorbers
English
Jung, Anne [Saarland University > Lehrstuhl fur Technische Mechanik > > Research Fellow]
Beex, Lars mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Diebels, Stefan [Saarland University > Lehrstuhl fur Technische Mechanik > > Professor]
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
8-Aug-2015
Materials & Design
Elsevier
87
36-41
Yes
International
[en] Open-cell metal foams ; Hybrid metal foams ; Energy absorbing materials ; Functionally graded materials ; Coating ; Impact
[en] Compared to most bulk materials, open-cell aluminium (Al) foams (OCAFs) are light-weight and can absorb a significant amount of energy in compression, e.g. during impact.When coatedwith nickel (Ni), OCAFs can absorb even more energy, making them more appropriate for impacts at higher velocities than uncoated OCAFs. When Ni-coated OCAFs experience low-velocity impact however, the stopping distance during the impact is small compared to that of uncoated OCAFs and hence, deceleration occurs fast. This exposes devices (and possibly human beings) protected by OCAFs to large internal forces leading to internal damage. An OCAF that combines the properties of uncoated and coated OCAFs can absorb energy during both low-velocity and high-velocity impact scenarios. This contribution introduces two of such OCAFs which are created by partially and gradually coating OCAFs. The general mechanics of the two OCAFs are revealed using experimental and numerical observation methods.
Researchers ; Professionals
http://hdl.handle.net/10993/19431
10.1016/j.matdes.2015.07.165

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