PolyDamage plugin is a tool to quickly add damage and imperfections to models.  
- Nothing is perfect in real life, so adding damage to your models make them look more realistic.
- PolyDamage is a quick alternative to manually sculpting damage with other software packages.
- PolyDamage adds an extra realism to concrete walls, grounds, stones, columns.
- PolyDamage quickly adds damage to corners and edges.
- Since it is procedural, you can make millions of damage variations of one single object.
- You can save the seed value of damage and next time you can get the same result with this seed value.
- You can adjust the parameters and adjust the depth of damage, or edge damage amount.
- Adjust the resolution slider to increase the level of detail in damaged areas.
- PolyDetail gives a unique material ID for damaged faces so you can apply a spesific damage material to only damaged faces.

You can get polydamage from this here :
https://www.cgtrader.com/3d-models/scripts-plugins/modelling/polydamage-for-3dsmax

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