thank you so much for your answer =]
Too bad UE4 doesn't have any method for viewing voxel data yet. I was making a search and I found out this video about 3D volume texture used for making the explosion in the game “Infiltrator”:https://www.youtube.com/watch?v=Q_-LrvzhBhM
That looks pretty cool, though I don't know exactly how to get the texture sheet from Houdini (I mean that grid with all the explosion “steps”).
Have you tried this method? (or maybe it's what you meant in your reply?) if so could you please give me more precise steps? It would help me a lot.
Thx so much