Volume 38, Number 4, August 2020
|Page(s)||695 - 704|
|Published online||06 October 2020|
Method for Determining Repair Tolerance of Civil Aircraft Composite Structure
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
In order to solve the problem of repair tolerance in the actual repair process of civil aircraft composite structure, by which it is judged whether to repair or not. Based on the existing results and shortcomings, this paper proposes two complete solutions and procedures for the repair tolerance of composite structure, focusing on how to determine the upper limit of repair under the consideration of both economy and safety. Then taking the composite stiffened wall panel under compression as an example, considering the damage of perforation, combined with finite element analysis, these two methods are used to try to calculate the repair tolerance of the stiffened panel respectively. The results show that the repair tolerance results of the same composite stiffened wall panel obtained by the two schemes are relatively close and reasonable, which proves the feasibility of these two methods, and provides a reference for the engineering damage assessment of civil aircraft composite structure.
Key words: civil aircraft / composite structure / repair tolerance / finite element method / damage assessment
关键字 : 民机 / 复材结构 / 修理容限 / 有限元 / 损伤评估
© 2020 Journal of Northwestern Polytechnical University. All rights reserved.
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