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Session: Poster pitches day 1
Session starts: Monday 26 June, 09:50
Presentation starts: 09:50

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Yuting He (Air Force Engineering University, China)
Rui Bao (Beihang University)

Abstract:
ABSTRACT After the concept of aircraft structural integrity was first proposed in 1954, it has been developed and improved gradually. In 2021, The Welding Institute stated that structural integrity is an engineering field that helps ensure that either a structure or structural component is fit for purpose under normal operational conditions and is safe even should conditions exceed that of the original design [1]. From the view of life cycle time, structural integrity can be categorized into structural manufacturing integrity, structural storage integrity and structural operational integrity. Structural operational integrity concerns the overall quality of structure in its whole operational process and can be used to characterize the general quality characteristic of structure more comprehensively[2]. Correspondingly, aerocraft structural operational integrity(ASOI), as the attribute which exists when aerocraft structure is sound and unimpaired in service or operational processes, shows the general quality characteristic of aerocraft structure more comprehensively. As a more comprehensive general quality characteristic of aerocraft structure, ASOI can be controlled from manufacture to operation. In this paper, ASOI is introduced briefly, including the concept, categorization and characterization, i.e. the inherent readiness rate of aerocraft structures, Rs, inherent health degree of a aerocraft structure, Hs(t), and aerocraft structural operational integrity degree, Iso. Then, something about aerocraft structural operational integrity control (ASOIC) is focused on. The concept of ASOIC is given, which is a series of activities carried out in the process of aerocraft structural design, manufacture and usage to achieve the established ASOI objectives by the trade-off of expected aerocraft structural durability, supportability, safety, performance, survivability and recoverability. The essence here is the adjustment and control process of ASOI. Consequently, the connotation of ASOIC is analyzed, which can be expressed by means of the control activity-loop of ASOI formed by design/establishment, manufacture/achievement, evaluation/validation, monitoring/sustaining, recovery/increasement and inspection/exploitation activities of ASOI. Furthermore, the basic modes of ASOIC are shown here, which include open-loop control, coordinated control and balanced control of ASOI. Finally, aerocraft structural operational integrity control strategy(ASOICS) was discussed briefly, which is to establish and apply an aerocraft structural operational integrity program(ASOIP) to all aerocraft structures. Using ASOIC , structures with more better comprehensive general quality characteristics could be gained for performing and completing the expected functions and missions. References [1] The Welding Institute (TWI). What Is Structural Integrity and Why Is It Important? [EB/OL]. 2021: https://www.twi-global.com/technical-knowledge/faqs/structural-integrity [2] Yuting He. Structural Operational Integrity - The More Comprehensive General Quality Characteristic of Structure [C]. The 12th International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, July27-30, 2022, Emei, Sichuan, China.