Insufficient weld size — because of design errors or incorrect interpretation of the part design – can lead to weld failures. ... A weld that is too small or too short for the application can fail from tension, compression, bending or torsional loads.

How do weld repairs fail?

The main reasons that weldments fail are: Inadequate material or properties. Poor design. Poor workmanship.

What are the possible failures in welded joints?

The defects which may fail a weld joint during service if left in a component undetected are the following: creaks, lack of penetration, lack of fusion, porosity etc. Among these defects, the linear ones such as the lack of penetration, lack of side wall fusions etc. and particularly the cracks are more harmful.