Title: Dynamic compression behavior of cenosphere aluminum alloy syntactic foam
Authors: GOEL Manmohan DassPERONI MARCOSOLOMOS GeorgeMONDAL Dehi PadaMATSAGAR VasantGUPTA AnilLARCHER MartinMARBURG Steffen
Citation: MATERIALS \& DESIGN vol. 42 no. December 2012 p. 418-423
Publisher: ELSEVIER SCI LTD
Publication Year: 2012
JRC N°: JRC69196
ISSN: 0261-3069
URI: http://www.sciencedirect.com/science/article/pii/S026130691200386X
http://publications.jrc.ec.europa.eu/repository/handle/JRC69196
DOI: 10.1016/j.matdes.2012.06.013
Type: Articles in Journals
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.
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