Metal Foams: A Design Guide

Energy/Unit cost (kJ/£)
10
1
0.1
0.01
Energy/unit cost
vs Plateau stress
Manual3.CMS; MFA 26-2-99; MetFoam DB
Cymat (0.155)
Cymat (0.083)
Cymat (0.166)
Cymat (0.276)
Hydro (0.196)
Energy management: packaging and blast protection 155
Hydro (0.22)
Hydro (0.18)
INCO (0.31)
INCO (0.385)
Hydro (0.2)
Hydro (0.27)
Hydro (0.54)
Hydro (0.56)
Fraunhofer (0.8)
Fraunhofer (0.4)
Alulight (0.32)
Duocel (0.198)
Alporas (0.245)
GASAR (4.589)
Fraunhofer (0.7)
Alulight (1)
0.05 0.1 0.5 1 5 10 50 100
Plateau stress (MPa)
Figure 11.5 Energy absorbed per unit cost up to densification, plotted
against plateau stress (which we take as the compressive strength at 25%
strain) for currently available metal foams. Each foam is labeled with its
density in Mg/m 3
hε D
(m)
1
0.1
a* = 20 g
a* = 60 g
0.01
1 10
v, m/s
100
1
a* = 200 g
Figure 11.6 Selection of foam thickness, h, for decelerations of 20 g, 60 g
and 200 g
2