### 低利用率下民机结构维修间隔确定模型

1. 1. 中国民航大学 航空工程学院, 天津 300300;
2. 民生金融租赁股份有限公司, 北京 100873
• 收稿日期:2017-06-14 修回日期:2017-08-14 出版日期:2018-01-15 发布日期:2018-01-15
• 通讯作者: 刘彦波,E-mail:ybliu@139.com E-mail:ybliu@139.com
• 基金资助:
中国民用航空局科技引领重大专项（MHRD20160105）；工信部民机专项（MJZ-2014-Y-61）

### Model for determining maintenance intervals of aircraft structural with low utilization

JIA Baohui1, LIU Yanbo1, LU Xiang1, TONG Shuai2

1. 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. Mingsheng Financial Leasing, Beijing 100873, China
• Received:2017-06-14 Revised:2017-08-14 Online:2018-01-15 Published:2018-01-15
• Supported by:
Major Project Foundation of Civil Aviation Administration of China (MHRD20160105);Project Foundation of Civil Aircraft for MⅡT (MJZ-2014-Y-61)

Abstract: One of the significant contents of the structural maintenance program is to determine the maintenance interval of the aircraft structure. However, the influence of the utilization ratio on the constraint condition of maintenance intervals are not comprehensively analyzed in the present guidelines on determining the intervals. A mathematical model for determining the maintenance intervals of the metallic structure with environmental damage of certain domestic civil aircraft with the low utilization is studied in this paper, based on the K-means algorithm and Analytic Hierarchy Process (AHP)-entropy method. The influence of the utilization ratio on the constraint condition for determining the maintenance intervals are fully considered in this mathematical model, and validity of the model are demonstrated by examples. The analysis results indicate that the model proposed is very effective and well matches the engineering practice, and can well solve the problem of lack of usage parameters and service data, significantly reducing the influence of subjective determination by human beings.