面向全尺寸民机结构疲劳试验的声发射监测技术

doi:10.7527/S1000-6893.2022.27044

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面向全尺寸民机结构疲劳试验的声发射监测技术

杨宇, 王彬文, 祁小凤

中国飞机强度研究所智能结构与健康管理技术研究室, 西安 710065

收稿日期:2022-02-15 修回日期:2022-04-13 出版日期:2022-06-15 发布日期:2022-04-06
通讯作者: 王彬文,E-mail:asriwbw@sina.com E-mail:asriwbw@sina.com
基金资助:
国家级项目

Acoustic emission monitoring technology for fatigue test of full-scale civil aircraft structure

YANG Yu, WANG Binwen, QI Xiaofeng

The Research Office of Intelligent Structure and Health Management Technology, Aircraft Strength Research Institute of China, Xi'an 710065, China

Received:2022-02-15 Revised:2022-04-13 Online:2022-06-15 Published:2022-04-06
Supported by:
National Level Project

摘要/Abstract

摘要： 作为一种在线、动态、实时监测技术，声发射是一种非常有潜力的航空结构疲劳损伤监测手段。然而，由于恶劣噪声环境及现有声发射监测处理及分析技术发展不足的影响，导致声发射技术目前仍无法在全尺寸民机结构中得到有效应用。本文面向全尺寸民机结构试验开展了高可靠性自动化声发射（AE）监测技术研究，提出了一种基于载荷同步的声发射损伤识别技术，该技术依托数据清洗、数据同步、数据分割提取及异常判别等环节实现，旨在解决全尺寸民机结构试验声发射损伤监测中监测效率低、损伤识别难度大和无法可靠识别等问题。通过在国内某型全尺寸民机结构疲劳试验中应用，该方法的有效性得到了证实，因而为中国型号试验提供支持，进而服务中国航空工业型号试验。

关键词: 声发射, 疲劳试验, 全尺寸飞机, 损伤监测, 损伤识别

Abstract: As an on-line, dynamic and real-time monitoring technology, Acoustic Emission (AE) is a potential fatigue damage monitoring method for aviation structures. However, due to the bad noise environment and the insufficient development of existing acoustic emission processing and analysis technology, acoustic emission technology is still unable to be effectively applied in full-scale civil aircraft structures. In this paper, the research on high reliability automatic AE monitoring technology for full-scale civil aircraft structure test is carried out, and an acoustic emission damage identification technology based on load synchronization is proposed. This technology is realized by relying on data cleaning, data synchronization, data segmentation and extraction, and anomaly discrimination, to solve the problems of low monitoring efficiency, and unreliable damage identification. Through the application in the fatigue test of a full-scale civil aircraft structure, the effectiveness of this method has been confirmed. Therefore, it provides support for full-scale aircraft fatigue test, and then serves Chinese aviation industry.

Key words: acoustic emission, fatigue test, full size aircraft, damage monitoring, damage identification

中图分类号:

V215.5

杨宇, 王彬文, 祁小凤. 面向全尺寸民机结构疲劳试验的声发射监测技术[J]. 航空学报, 2022, 43(6): 527044-527044.

YANG Yu, WANG Binwen, QI Xiaofeng. Acoustic emission monitoring technology for fatigue test of full-scale civil aircraft structure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(6): 527044-527044.

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