基于FAHP的民机结构环境损伤维修间隔确定技术研究

发布时间：2018-04-06 07:42

本文选题：维修大纲　切入点：飞机结构　出处：《中国民航大学》2013年硕士论文

【摘要】：飞机结构维修大纲是维修大纲的重要组成部分,制定结构维修大纲须遵循MSG-3方法的逻辑决断,通过制定有效的维修间隔和维修方式来保证飞机固有的安全性和可靠性。飞机结构环境损伤维修间隔的确定是制定结构维修大纲的重要内容之一。本文首先分析了飞机结构环境损伤的评定原理,然后介绍了确定结构维修间隔的一般方法并详细分析了波音公司和空客公司的矩阵图法。由于结构环境损伤的评定是一个涉及到多因素评价的过程,且评价指标的评级又具有模糊性,所以本文提出了一种模糊数学和层次分析法相结合的评价模型,即飞机结构环境损伤模糊层次综合评判模型。在建模过程中采用模糊综合评判法,借助于粗糙集理论中属性重要度的知识求解权重集,然后通过模糊综合评判得到结构环境损伤总等级,进而根据等级间隔对应关系来确定维修间隔。然后对以飞机重要结构项目为例进行分析,以检验该方法的有效性。在此基础上,设计开发了一套飞机结构环境损伤辅助分析软件系统。本文提出的飞机结构环境损伤模糊层次综合评判模型,经实例验证可行。现阶段我国正在研制拥有自主知识产权的民用客机,因此本文所做内容可以为工程人员确定维修间隔以及制定民机结构维修大纲提供一定的参考。
[Abstract]:The maintenance outline of aircraft structure is an important part of the maintenance outline. It is necessary to follow the logic decision of MSG-3 method to make the outline of structural maintenance, and to ensure the inherent safety and reliability of aircraft by making effective maintenance interval and maintenance method.The determination of the maintenance interval of aircraft structure environmental damage is one of the important contents in formulating the structural maintenance outline.In this paper, the principle of environmental damage assessment of aircraft structure is analyzed, then the general method of determining the interval of structural maintenance is introduced, and the matrix diagram method of Boeing and Airbus is analyzed in detail.Because the assessment of structural environmental damage is a process involving multi-factor evaluation and the evaluation index is fuzzy, this paper presents an evaluation model which combines fuzzy mathematics with AHP.That is the fuzzy comprehensive evaluation model of aircraft structure environment damage.In the process of modeling, the fuzzy comprehensive evaluation method is used to solve the weight set by virtue of the knowledge of attribute importance in rough set theory, and then the total grade of structural environmental damage is obtained by fuzzy comprehensive evaluation.Furthermore, the maintenance interval is determined according to the corresponding relation of grade interval.Then the paper analyzes the important structural items of aircraft to verify the effectiveness of the method.On this basis, a software system of aircraft structure environmental damage analysis is designed and developed.In this paper, the fuzzy comprehensive evaluation model of aircraft structure environmental damage is presented, which is proved to be feasible by an example.At present, China is developing a civil airliner with independent intellectual property rights, so the contents of this paper can be used as a reference for engineers to determine the maintenance interval and to formulate a civil aircraft structural maintenance outline.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：V267

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