Skip to Main content Skip to Navigation
Conference papers

Blind identification using inverse Patch Transfer Function (iPTF) method

Abstract : An important object of vibration and noise reduction and control is to identify and localize the vibration and noise sources. Many inverse methods, like Nearfield Acoustic Holography, have been developed in acoustics in the last decades. Among others, the iPTF method, allows the reconstruction of the acoustic fields (pressure, velocity, intensity) directly on the vibrating structure surface even when it has a complex shape. In addition, measurements can be done in non-controlled acoustic environments. The concept of iPTF is based on the application of Green's identity on any closed virtual volume defined around the source. The reconstruction of sound source fields combines discrete acoustic measurements performed at accessible positions around the source with acoustic impedance matrices. In the present work, blind identification of the vibratory fields is proposed. The "blindness" has here two meanings:-the identification of the velocity field of a vibrating structure can be blind if obstacles mask parts of the structure to characterize.-the identification can be blind if the velocity field is the result of the combination of several unknown sources and if one wants to separate the contribution of each source. Some numerical and experimental results will be shown to illustrate both aspects of the blind identification.
Document type :
Conference papers
Complete list of metadata

Cited literature [13 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02349359
Contributor : Emmanuel Manu Dabankah <>
Submitted on : Tuesday, November 5, 2019 - 4:10:41 PM
Last modification on : Wednesday, April 7, 2021 - 2:36:02 PM
Long-term archiving on: : Friday, February 7, 2020 - 2:01:15 AM

File

DABANKAH_ICA_2019.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02349359, version 1

Collections

Citation

Emmanuel Dabankah, Nicolas Totaro, Jérôme Antoni. Blind identification using inverse Patch Transfer Function (iPTF) method. 23RD INTERNATIONAL CONGRESS ON ACOUSTICS, Sep 2019, Aachen, Germany. ⟨hal-02349359⟩

Share

Metrics

Record views

70

Files downloads

56