보강판의 균열거동해석과 Crack Arrest 설계(I) - Crack Arrest 설계기준의 수치해석

Crack Growth Analysis and Crack Arrest Design of Stiffened Panels(I) - Numerical Approaches to Crack Arrest Design Chart

The purpose of a fatigue crack arrest design is to prevent a fatigue fracture of machine and structure resulted from unstable crack growth. In all cases of load transfer to second elements such as stringers, doublers or flanges, crack arrest is possible; arrest occurring when the fatigue crack reaches the second element. In the present work, a numerical analysis was carried out to estimate the effect of shape parameters on fatigue crack growth and arrest behavior of integrally stiffened panels. Based on these results, a set of fatigue crack arrest design chart is presented as "non-dimensional arrest load - thickness ratio" relationship.