Fracture and damage of foamed materials
Fig. 1 Deformation and fracture behavior of a porous aluminum cell wall. While ductile buckling can be seen with pure aluminum material, with alloyed material, microscopic cracks that emerge from comparatively large micropores are seen to combine and propagate.
Fig. 2 Result of a 3D measurement of deformation within a cell wall. The measurement was made by using the internal micropores as deformation measurement markers and by tracking these markers. The positional relationship between the internal rough pores (white lines) and deformation is shown by overlaying a transparent image of the cell wall.@
Fig. 3 Calculation result of the equivalent plastic strain distribution inside porous aluminum derived from an image based numerical analysis. The micropores aligned at gAh caused a change in the strain distribution both at gAh and from gBh to gD,h located slightly apart from gAh.@@
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