Implementation of "MSG-۳" for Crack Growth Analysis of Aircraft SSI Components

The main goal of this article is to implement the MSG-۳ process in structure field for an SSI component of b۷۴۷ aircraft. This process is expected toincrease the ease of aircraft maintenance and its safety level. MSG-۳ logic took a top-down or consequence of failure approachmeaning that MSG-۳ reduces the maintenance cost and upgrades safety. Moreover, it cansignificantly help saving thetime and providing financial benefits for the design approach and the developmentof maintenance programing. In this study, in correspondence with the SLD of MSG-۳,an SSI component is selected and itsfatigue crack growth analysis is investigated. The approach of this study is to use the FEM and fractography for the purpose of exploring the loading.