An experimental investigation of porous volcano rock hypervelocity impact on honeycomb sandwich panels

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (24) : 1-6.

LIAO Gaojian1,CHEN Yong1,LIU Xi1,JIA Bin2

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Abstract

In order to investigate the hypervelocity impact performance of honeycomb sandwich structures in spacecrafts, lightweight porous volcano rock projectiles were used to identify the micro-meteoroids, and hypervelocity impact tests were conducted to investigate the damage characteristics of honeycomb sandwich panels.The results show that the lightweight brittle volcano rock projectiles could be completely lunched by using a sabot with a silicon rubber pad.Following hypervelocity impact of volcano rock projectiles, the damage modes of honeycomb sandwich panels mainly took the forms of front surface perforation, honeycomb collapse, rear surface petalling and debonding, etc.The perforation diameter of the front surface increased with the diameter of the projectile, while the collapse area of the honeycomb and the failure area of rear surface were influenced not only by the impact energy and projectile diameter, but also by the impact position. 

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Honeycomb sandwich panel / Volcano rock / Hypervelocity impact / Damage

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LIAO Gaojian1,CHEN Yong1,LIU Xi1,JIA Bin2. An experimental investigation of porous volcano rock hypervelocity impact on honeycomb sandwich panels[J]. Journal of Vibration and Shock, 2018, 37(24): 1-6

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