This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reconstruction of a Vibration Field from Acoustical Measurements: A New Inverse Method Based on the Concept of Pellicular Acoustic Modes
Technical Paper
2009-01-2209
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes a new approach for performing indirect vibration measurements using acoustic measurements and an inverse calculation procedure based on a finite element model and a new type of hierarchical basis (so-called pellicular modes) for representing the unknown vibration field.
The paper first presents the theory of the method. A parametric study on a simple test case then highlights the effect of the number of microphones and of the background noise level on the quality of the reconstruction of the vibration pattern. The application to a real set of acoustic data on a section of an ATR regional aircraft is then provided.
Recommended Content
Technical Paper | Design and Performance of the Acoustic Technology Center at E-A-R™ |
Journal Article | Vehicle NVH Analysis Using EFEA & EBEA Methods |
Technical Paper | Engine Noise Radiation - Prediction and Test Comparison |
Authors
Citation
Lielens, G., Van Antwerpen, B., and Migeot, J., "Reconstruction of a Vibration Field from Acoustical Measurements: A New Inverse Method Based on the Concept of Pellicular Acoustic Modes," SAE Technical Paper 2009-01-2209, 2009, https://doi.org/10.4271/2009-01-2209.Also In
References
- Gábor D. Microscopy by reconstructed waveforms Proc.Roy.Soc., Ser.A. 197 454sqq 1949
- Müller R.K. Acoustic holography, Proc. IEEE 59 1319sqq 1971
- Maynard J.D. Williams E.G. Lee Y. Near-field acoustic holography (NAH): I. Theory of generalized holography and the development of NAH J.Ac.Soc.Am. 78 4 1395sqq 1985
- Veronesi W.A. Maynard J.D. Near-field acoustic holography (NAH): II. Holographic reconstruction algorithms and computer implementation J.Ac.Soc.Am. 81 5 1307sqq 1987
- Hald J. STSF - A unique technique for scan-based near-field acoustic holography without restriction on coherence Bruël&Kjaer Technical Review 1 1sqq 1989
- Tikhonov A.N. Solution of incorrectly formulated problems and the regularization method Doklady Akad.Nauk. SSSR 151 501sqq 1963
- Augusztinovicz F. Tournour M. Reconstruction of source strength distribution by inverting the boundary element method Boundary Elements in Acoustics von Estorff O. WIT Press 2000
- Astley R.J. Macaulay G.J. Coyette J.P. Cremers L. Three-dimensional wave-envelope elements of variable order for acoustic radiation and scattering. Part I: formulation in the frequency domain J.Acoust.Soc.Am. 103 49sqq 1998