Usually, maintainability, which is often expressed by means of MTTR (Mean Time to Repair), is used to characterize whether it’s easy to repair when the equipment structures have some common damages during the normal service period. But, it’s hard for equipment structures to avoid accidental and unexpected damages in service, such as accident damages, battle damages, etc. And then recoverability can be used to express whether it’s easy to repair and recover when equipment structures suffer some accidental and unexpected damages. After expounding the basic concept of structural recoverability, the significance of structural recoverability to maintaining structural operational integrity, which is categorized into structural static operational integrity and structural dynamic operational integrity, is discussed. Then, parameters Rc(t) (Recovery Degree), MTTRC (Mean Time to Recovery), MRCC (Mean Recovery Cost), and MWTTRC (Mean Work Time to Recovery) are proposed to characterize and measure structural recoverability. Furthermore, the normal evaluation, assessment, and design methods of structural recoverability are put forward primarily. Finally, a brief example of recoverability evaluation for accidentally damaged vehicle front bumper structures of three brands of the same model class is shown through analyzing MTTRC and MRCC, and followed by the recoverability design discussion on an aircraft monolithic backswept wing structure constructed by ribs, stringers and skins. It is also stated here that the concept, measurement, evaluation, assessment, and design methods of structural recoverability are suitable for other structures, such as building structures, bridge structures, and other infrastructure structures, etc.
On the Evaluation and Design Methods of Structural Recoverability
Lect. Notes Electrical Eng.
Asia-Pacific International Symposium on Aerospace Technology ; 2021 ; Korea (Republic of) November 15, 2021 - November 17, 2021
The Proceedings of the 2021 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2021), Volume 1 ; Chapter : 63 ; 827-842
2022-08-31
16 pages
Article/Chapter (Book)
Electronic Resource
English
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