Abstract
3D auxetic textile composite is a special type of auxetic materials which has attracted more attention in recent years. Its deformation behaviour and mechanical properties under quasi-static compression have been investigated in the previous studies. In this paper, a further study on its mechanical properties under low-velocity impact is presented. Both single and repeating impact tests were conducted at different impact energy levels ranging from 12.7 to 25.5 J. Results show that the 3D auxetic textile composite has better impact protective performance than the 3D non-auxetic textile composite due to better transmitted force reduction and higher energy absorption capacity under single-time impact and higher structural stability under repeating impacts. The results also show that the difference in protective performance between the auxetic and non-auxetic textile composites get increased with the increase in impact energy.
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