 ##  [Delamination](/index.php/delamination) 

  ##  [Delamination](https://natural.quantumdictionary.io/delamination-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 &amp; Formal Sciences Dictionary**

 
Definition

Separation of layers in a composite or coated material along an internal interface, producing a loss of through-thickness mechanical continuity and integrity.

 
 ##  [Delamination](https://engineering.quantumdictionary.io/delamination-1) 

  
 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/index.php/topic-specific-dictionaries/engineering-applied-technologies)


**Engineering &amp; Applied Technologies Dictionary**

 
Definition

Separation between adjacent plies or layers within a laminated composite or bonded multi‑layer structure caused by interlaminar stress, out‑of‑plane loading, impact, manufacturing defects, or fatigue; delamination propagates when the energy release rate at the interply interface exceeds the interlaminar fracture toughness (G_IC, G_IIC) and is distinct from matrix cracking and fiber breakage.