Dynamic compression behavior of cenosphere aluminum alloy syntactic foam

Manmohan Dass Goel, Marco Peroni, George Solomos, Dehi Pada Mondal, Vasant A. Matsagar, Anil K. Gupta, Martin Larcher, Steffen Marburg

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

The compression behavior of aluminum cenosphere syntactic foam has been studied and full stress-strain diagrams have been obtained for strain rates ranging from quasi-static to 1400/s. The foam exhibits peak stress at a strain of about 5%, especially during quasi-static compression, and the maximum value of stress around this strain is used to examine strain rate sensitivity and to determine an appropriate sensitivity parameter. The compressive strength and energy absorption of these foams attain a maximum at strain rates of approximately 750/s and then they decrease with further increase in the strain rate. The foam with coarser cenosphere appears to be more sensitive to strain rate. An empirical relation is developed for predicting the dynamic compressive strength of aluminum cenosphere syntactic foams. Explanation of the observed mechanical behavior in terms of the material failure mechanisms is provided.

Original languageEnglish
Pages (from-to)418-423
Number of pages6
JournalMaterials and Design
Volume42
DOIs
StatePublished - Dec 2012
Externally publishedYes

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