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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (6): 527044-527044.doi: 10.7527/S1000-6893.2022.27044

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

YANG Yu, WANG Binwen, QI Xiaofeng   

  1. 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

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

CLC Number: