##  [Spallation](/index.php/spallation) 

  ##  [Spallation](https://natural.quantumdictionary.io/spallation-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/index.php/topic-specific-dictionaries/natural-formal-sciences)



**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A surface or near‑surface failure process in which fragments of material detach or are ejected from a body, typically caused by high tensile stresses resulting from shock wave reflection, repeated thermal/mechanical cycling, or subsurface fatigue crack coalescence.