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|Title:||Dynamic compression behavior of cenosphere aluminum alloy syntactic foam|
|Authors:||GOEL Manmohan Dass; PERONI MARCO; SOLOMOS George; MONDAL Dehi Pada; MATSAGAR Vasant; GUPTA Anil; LARCHER Martin; MARBURG Steffen|
|Citation:||MATERIALS \& DESIGN vol. 42 no. December 2012 p. 418-423|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in periodicals and books|
|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.|
|JRC Directorate:||Space, Security and Migration|
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