##  [Weld Toe Cracking](/weld-toe-cracking) 

  ##  [Weld Toe Cracking](https://engineering.quantumdictionary.io/weld-toe-cracking-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A mode of crack initiation and growth that originates at the junction (toe) between a weld reinforcement or face and the adjacent base material, produced primarily by cyclic tensile stress concentration, adverse weld geometry (sharp toe, undercut), residual tensile stresses, or metallurgical weaknesses; the crack is surface‑initiated and may propagate into the heat‑affected zone, base metal, or we