A Method for Reliability Assessment of Aircraft Structures Subject to Accidental Damage

摘要: A method has been proposed to assess the reliability of aircraft structures subject accidental damage using in-service data. The development this is motivated by increasing use composite materials in structures, which are particularly sensitive impact damage. In addition, may not be visible or difficult detect. Based on equivalent Level Safety (LOS) concept, consists two essential elements: a probabilistic assessment detected damages and probability non-destructive inspection methods detect such Accidental threats first characterized identifying type, size, cause, frequency for different models structural components. then modeled constructing histograms distributions. Probability detection various techniques used calculate Safety. This approach can design new structure that equivalently more reliable as current designs. Furthermore, maintenance service guidelines optimum intervals estimated once limit load established. Engineers methodology future guide establish criteria while considering safety risk cost at same time. relies completeness reported data Fleet currently available contain accurate information size associated method. reporting procedures vary from one operator another, limited. Therefore, sample representation extracted sizes issues must addressed order apply practical design. paper, 100% assumed. results analysis give insight general designing inspecting structures.