Crack initiation refers to the process where a small defect or imperfection in a material begins to grow into a larger fracture under stress or loading conditions. This critical stage is significant in understanding material failure, particularly in the context of fatigue and fracture mechanics, where repeated loading can exacerbate small flaws, leading to catastrophic structural failures. Identifying factors that contribute to crack initiation helps engineers design safer and more durable structures by mitigating risks associated with material fatigue.
congrats on reading the definition of crack initiation. now let's actually learn it.