Abstract
Cellular metals exhibit diverse properties, depending on their geometries and base materials. This study investigated the mechanism of high-pressure generation during the high-velocity impact of unidirectional cellular (UniPore) materials. Cubic UniPore copper samples were mounted on a projectile and subjected to impact loading using a powder gun to induce direct impact of samples. The specimens exhibited a unique phenomenon of high-pressure generation near the pores during compression. We elucidate the mechanism of the high-pressure phenomenon and discuss the pore geometries that contribute to the generation of high pressures.
Highlights
Cellular metals are characterised by high porosity that significantly influences their mechanical properties
The behaviour of cellular materials under high-velocity impact has already been investigated, only a few studies focus on the high-pressure generation within cellular materials during impact [19,20,21]
We investigated the mechanism of high-pressure generation using unidi4
Summary
Cellular metals are characterised by high porosity that significantly influences their mechanical properties. They can be used in a wide range of fields [1,2,3] because of their various functions, which depend on the cellular morphology, topology and base material. Research has been conducted to clarify the relationship between the structure, mechanical properties [4,5,6,7,8], and thermal conductivity [9,10,11], as well as to explore their applications in aerospace [12,13] and medical fields [14,15,16]. It has been applied to synthesise hydrogen-storage materials [23]
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