飞机主梁疲劳裂纹萌生声发射信号的识别方法

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1996, Vol. 17 ›› Issue (3): 368-372.

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IDENTIFICATION OF ACOUSTIC EMISSION SIGNALS PRODUCED BY FATIGUE CRACK INITIATION IN WING SPARS OF AIRCRAFT

Geng Rongsheng¹, Jing Peng¹, Lei Hong¹, Li Wei², Shao Jin²

1. P.O.Box Beijing 9203 16,Beijing,100076;2. Beijing Yan Shan Pet rochemical Corp. ,Beijing, 102549

Received:1900-01-01 Revised:1900-01-01 Online:1996-06-25 Published:1996-06-25

Abstract

Abstract: An attempt has been made to use acoustic emission (AE) to monitor the initiation and growth of fatigue cracks of aircraft under fullsize fatigue test.Multi\|parameter identification and correlation techniques are proposed to distinguish between genuine (crack\|related) AE signals and background noises.The initiation of a fatigue crack of less than 0.5mm was predicted in time.

Key words: acoustic emission (AE), fatigue crack, multiparameter ident ification, correla tion

CLC Number:

V21515

Geng Rongsheng;Jing Peng;Lei Hong;Li Wei;Shao Jin. IDENTIFICATION OF ACOUSTIC EMISSION SIGNALS PRODUCED BY FATIGUE CRACK INITIATION IN WING SPARS OF AIRCRAFT[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1996, 17(3): 368-372.

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IDENTIFICATION OF ACOUSTIC EMISSION SIGNALS PRODUCED BY FATIGUE CRACK INITIATION IN WING SPARS OF AIRCRAFT

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