Crack Growth Rate
The crack growth rate indicates how fast a crack grows in a material under load. It is important for estimating the life of components.
Physicochemical Mechanism
Crack growth rate describes how fast an existing crack propagates in a material under load. This depends on factors like the stress intensity at the crack tip and the number of load cycles.
Metallurgical Relevance & Welding Risks
In welding, crack growth rate can increase if the material isn't handled properly. That speeds up crack formation and shortens the life of parts. A too-high stress intensity factor or excessive loading can accelerate the process.
Shop Practice & How-To
To control crack growth rate, handle and protect the material properly. That means correct welding, proper loading, and using suitable materials. When picking a material, also consider its crack growth rate to maximize service life.