ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Multi-source data driven optimization technology for airframe structural operation and maintenance
Received date: 2025-09-16
Revised date: 2025-10-10
Accepted date: 2025-10-20
Online published: 2025-10-24
To meet the predictive and condition-based maintenance requirements for the airframe structures of large passenger aircraft, a multi-source data fusion driven system for air route maintenance is developed. This system integrates engineering data from the model type development phase, including flight test measured loads, full-aircraft finite element internal forces, structural fatigue damage assessment, airworthiness limitation items, and their associated maintenance requirements. By employing methods such as data cleaning, sample reconstruction, data modeling, damage accumulation analysis, and maintenance customization optimization, the system enables comprehensive condition-based maintenance support. Through application to a specific domestic large passenger aircraft, it has resolved key challenges in data modeling accuracy and prediction efficiency for airframe structure maintenance. The system achieves rapid single-flight prediction of “flight parameters-loads-stress-damage” for critical wing regions. Based on comparison between theoretical damage per flight and actual damage values at 95% confidence level, preliminary estimates indicate that the repeat inspection interval for high-frequency eddy current inspections can be extended as follows: from 5 000 to 8 091 flight cycles for stringer hole edges at the skin-stringer splice detailed position of the lower wing panel, and from 5 500 to 8 900 flight cycles for skin hole edges.
Lingang ZHU , Puhui CHEN . Multi-source data driven optimization technology for airframe structural operation and maintenance[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2026 , 47(12) : 232789 -232789 . DOI: 10.7527/S1000-6893.2025.32789
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