Air-Vessel corrosion damage distribution and reliability modelling

Existing research on structural reliability affected by corrosion has a primary focus on structure failure due to inadequate residual structural strength. However, some corrosion-induced failures are not critically dependent on stress or fatigue: examples include leakage from fluid lines or containers, air cabin and landing floats, and/or degradation of the externally smooth surface. Based on data collected from passenger aircraft Y-7 inspections and maintenance, this paper will propose some concepts and relevant failure criterion based on the functionalities of the structure. Additionally, this paper will propose a few corrosion probabilistic models for reliability assessments.