Localization of Sound Sources during Full Scale Fatigue Test of the Vertical Stabilizer with the Acoustic Holography Technique

Fatigue of Aircraft Structures

Andrzej Leski^1¹ 

[1]Poland^1

关键词: acoustic holography;    Full Scale Fatigue Test;    damage detection;    microphone arrays;   

DOI  :  10.1515/fas-2017-0002

学科分类：航空航天科学

来源: Instytut Lotnictwa / The Institute of Aviation

【 摘 要 】

An acoustic holography and its practical applications in engineering began to develop at the end of the 20th century. Currently, this technique is being commonly used to locate sound sources. This paper presents the use of an acoustic camera to locate sound sources during the Full Scale Fatigue Test of the MiG-29 stabilizer. During fatigue tests, the tested structure issues a series of sounds in the form of glitches, creaks or beats. These sounds are typical for a structure subjected to dynamic loading, but they can also be a source of diagnostic information about places of fatigue failures. The paper presents the results of measurements made during the fatigue test. Thanks to the analysis of the measurement results, it was possible to identify areas that are the basic source of sounds.

【 授权许可】

Unknown