Energy absorption efficiency of open-cell pure aluminum foams

For their application as crash absorber the specific energy absorption efficiency of metal foams is of particular interest. Current literature offers limited information about the relation between the relative density of open-cell foams and their specific energy absorption efficiency. With the aid o...

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Bibliographic Details
Published in:Materials letters 2016-12, Vol.184, p.208-210
Main Author: Fischer, Sebastian F.
Format: Article
Language:English
Subjects:
Cast
Deformation
Porous materials
Structural
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Summary:For their application as crash absorber the specific energy absorption efficiency of metal foams is of particular interest. Current literature offers limited information about the relation between the relative density of open-cell foams and their specific energy absorption efficiency. With the aid of own measurements and literature data this relation was derived. According to the developed correlation a relative density of less than 3% can be suggested for a high specific energy absorption efficiency of open-cell ductile foams. To achieve an efficiency of at least 50% a relative density of 50–60% is suggested. •The plateau's continuous increase can be completely attributed to strain hardening.•The specific energy absorption efficiency can be described by a simple power law.•The slope of the stress plateau is not influenced by the cell morphology.•The maximal energy absorption efficiency can be reached by a relative density
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2016.08.061