##  [Fatigue Crack Growth](/index.php/fatigue-crack-growth) 

  ##  [Fatigue Crack Growth](https://engineering.quantumdictionary.io/fatigue-crack-growth-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

Progressive extension of a pre‑existing crack in a material caused by repetitive (cyclic) mechanical loading, in which the crack growth rate (da/dN) is principally governed by the cyclic stress‑intensity‑factor range ΔK and by local mechanisms (plasticity, microstructure, and environmental interactions) until unstable fracture occurs when a critical toughness limit is reached.

 

 

 

 

 





 

 



 ##  [Fatigue Crack Growth](https://physics.quantumdictionary.io/fatigue-crack-growth-1) 

  

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- Natural & Formal Sciences -

**Physics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The progressive extension of an existing crack in a material driven by cyclic or fluctuating stresses, typically described in fracture‑mechanics terms by a crack‑growth rate that depends on the stress‑intensity range, environment and microstructure.