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Title: Impact loading of functionally graded metal syntactic foams
Authors: Movahedi, Nima
Fiedler, Thomas
Taşdemirci, Alper
Murch, Graeme E.
Belova, Irina V.
Güden, Mustafa
University of Newcastle
University of Newcastle
Izmir Institute of Technology
University of Newcastle
University of Newcastle
Izmir Institute of Technology
Keywords: Deformation mechanism
Functionally graded metal syntactic foam
Impact loading
Issue Date: 6-Apr-2022
Publisher: Elsevier
Abstract: The present study addresses the impact loading of functionally graded metal syntactic foams (FG-MSF). For comparison, samples of the same material were also compression loaded at quasi-static velocities. Samples of A356 aluminium FG-MSF were produced using counter-gravity infiltration casting with combination of equal-sized layers of expanded perlite (EP) and activated carbon (AC) particles. A modified Split Hopkinson Pressure Bar test set-up was used to impact the FG-MSFs from their EP or AC layers at 55 m/s or 175 m/s impact velocities. A high-speed camera captured the deformation of the samples during testing. It was shown that increasing the loading velocity enhanced both the compressive proof strength and energy absorption of the impacted FG-MSF from both layers, confirming a dynamic strengthening effect of the foam. The samples impacted from both layers at 55 and 175 m/s showed a transition and a shock mode of deformation, respectively. The impacted samples at 55 m/s experienced lower final average strain values compared to 175 m/s.
Appears in Collections:Mechanical Engineering / Makina Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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