JRC69196

Abstract

The dynamic compression behaviour of Al-2014-cenosphere syntactic foam has been studied using Hopkinson bar testing . Full stress-strain diagrams have been obtained for strain rates ranging from quasistatic to 1400/s. The foam exhibits peak stress at a strain of about 5%, especially during quasistatic 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. Explanation of the observed mechanical behaviour in terms of the material failure mechanisms is provided.

Authors

GOEL Manmohan Dass; PERONI Marco; SOLOMOS George; MONDAL Dehi Pada; MATSAGAR Vasant; GUPTA Anil; LARCHER Martin; MARBURG Steffen

Year

2012

Publisher

ELSEVIER SCI LTD

Citation

Goel M, Peroni M, Solomos G, Mondal D, Matsagar V, Gupta A, Larcher M, Marburg S. Dynamic compression behavior of cenosphere aluminum alloy syntactic foam. MATERIALS \and DESIGN 42 (December 2012); 2012. p. 418-423. JRC69196

Identifiers

JRC	JRC69196
ISSN	0261-3069
DOI	10.1016/j.matdes.2012.06.013

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