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Publikováno v:
Applied Sciences, Vol 12, Iss 10, p 4956 (2022)
The acoustic resonance of aero-engine compressors is very harmful, which can lead to the failure of components such as blades. The mechanism of acoustic resonance is very complicated. To solve this problem, characteristics of the noise signal under t
Externí odkaz:
https://doaj.org/article/3a77dbf273b24598a9c58d1ffc0793cb
Autor:
Wei Cheng, Kai Ou, Chao Song, Shuang Chen, Xuefeng Chen, Lin Gao, Jun Wang, Yanan Zhao, Mingsui Yang
Publikováno v:
Measurement Science and Technology. 34:075013
For the sound field of cylindrical or compact sources, the current sound field separation technique (FST) based on statistically optimized near-field acoustic holography (SONAH) uses planar wave for separation, and the effects of different wave funct
Publikováno v:
Volume 1: Aircraft Engine; Ceramics and Ceramic Composites.
The model of flow around the flat plate cascades is a fundamental study for the flow-induced acoustic resonance phenomenon. Parker first conducted an experimental study on the acoustic issue with the vibration of the built-in plate in the rectangular
Publikováno v:
Sensors, Vol 19, Iss 1, p 137 (2019)
Based on traditional sandwich structure, two piezoelectric transducers were designed to meet the strict underwater application backgrounds such as high pressure, corrosion resistance, and high strength. Both transducers integrated most of previous re
Externí odkaz:
https://doaj.org/article/ef84093bfb984b09a376965a8e8a4383
Publikováno v:
Journal of Sound and Vibration. 548:117510
Publikováno v:
Chinese Journal of Aeronautics, Vol 33, Iss 12, Pp 3228-3237 (2020)
A physical model for acoustic resonance in the annular cavity structure is developed to represent the typical characteristic when acoustic resonance occurs. Firstly, the measurement of sound pressure in the casing and rotor blades vibration is operat
Publikováno v:
Chinese Journal of Aeronautics, Vol 33, Iss 3, Pp 870-878 (2020)
Rotor blades fault of aeroengine compressor is mostly caused by mechanical and aerodynamic excitation. And the excitation factor of high intensity sound wave to rotor blades should not be ignored. Experimental researches are conducted on a multistage
Publikováno v:
Measurement Science and Technology. 34:035002
Noise source identification of gas turbines can provide the basis and guidance for vibration and noise reduction of gas turbines. Independent component analysis (ICA) is one of the most popular techniques for blind source separation (BSS) widely used
Publikováno v:
Chinese Journal of Aeronautics, Vol 32, Iss 9, Pp 2059-2067 (2019)
Wall pressure fluctuations generated by Turbulent Boundary Layers (TBL) provide a significant contribution in reducing the structural vibration and the aircraft cabin noise. However, it is difficult to evaluate these fluctuations accurately through a