Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
In the present study, the effect of strain rate on compressive properties of open-cell metal foams was investigated. A commercial open-cell Ni foam was used. New impact testing machine with opposed load cell, which can detect the load at both ends of specimen in only one test, was developed. The same accuracy was obtained by using this testing machine in comparison with the split Hopkinson pressure bar method. Additionally, the impact and quasi-static test at the strain rate of 4.5×102 s-1 and 8.3×10-4 s-1 were compared. In the Ni foam, the elastic response, plateau deformation and densification were observed regardless of the strain rate. The compressive stress of the Ni foam did not increase when the strain rate increased.
