Results 11 to 20 of about 9,260,103 (204)
Numerical techniques for near-field acoustic holography [PDF]
, 2019 Near-field acoustic holography (NAH) has proved to be an enormously successful sound source identification technique, which is widely used in field of acoustics and noise control. The work presented in this thesis aims at developing a novel method for modelling near-field acoustic holography, where the particle velocity on the surface of a vibrating ...
Abusag, NM
core +6 more sources
On Data Selection and Regularization for Underdetermined Vibro-Acoustic Source Identification [PDF]
SensorsThe number of hologram points in near-field acoustical holography (NAH) for a vibro-acoustic system plays a vital role in conditioning the transfer function between the source and measuring points.
Laixu Jiang +3 more
doaj +2 more sources
Cell Mechanics in Cancer: Integrating Mechanotransduction Pathways Within the Tumor Microenvironment. [PDF]
J Cell PhysiolABSTRACT Single‐cell mechanical properties such as stiffness, elasticity, and viscosity, are crucial in governing biological processes like migration, proliferation, and differentiation. In cancer, the mechanical properties of cells undergo significant alterations, which contribute to tumor growth, metastasis, and resistance to therapy.
Sevgi M +7 more
europepmc +2 more sources
METHOD FOR PLANE NEAR-FIELD ACOUSTIC HOLOGRAPHY BASED ON COMPRESSIVE SAMPLING AND ITS APPLICATION
Jixie qiangdu, 2016 In traditional plane near-field acoustic holography reconstruction process,regardless of wave number domain filter or regularization method,they cannot solve their own ill-posed problem,and thus cannot improve the reconstruction accuracy.
DU Bao +4 more
doaj +2 more sources
Advanced equivalent source methodologies for near-field acoustic holography
Journal of Sound and Vibration, 2019 The equivalent source method (ESM) based near-field acoustic holography (NAH) has been used successfully in the reconstruction of the acoustical field over arbitrarily shaped vibrating structures from measurements of the pressure field on a nearby ...
N. Valdivia
semanticscholar +3 more sources
Cyclostationary Near-field Acoustic Holography for Gearboxes
Jixie chuandongRegarding the problem that the traditional near-field acoustic holography (NAH) has difficulty in reconstructing the sound field of the gearbox, this work makes full use of the cyclostationary characteristics of the radiated noise and combines the ...
Zhu Song, Zhang Erliang, Gao Xiaoyu
doaj +1 more source
APPLIED ASPECTS OF NEAR-FIELD ACOUSTIC HOLOGRAPHY
Transactions of Kremenchuk Mykhailo Ostrohradskyi National University, 2023 Yevhenii Ponomarenko, Kyrylo Trapezon
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High resolution near-field acoustic holography [PDF]
, 2004 High resolution Near-field Acoustic Holography (NAH) is not a widely discussed topic in open literature. For instance articles on automotive or naval applications do not discuss resolutions beyond one centimetre. Electronic appliances on the other hand demand a high spatial resolution, since the components of printed circuit boards become smaller and ...
Scholte, R., Roozen, N.B.
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Use of near field acoustic levitation sliding contact [PDF]
, 2007 This paper presents an investigation into producing self-levitation effect using piezo-electric actuators (PZT). Self-levitation has been demonstrated and results are presented and discussed.
Stolarski, TA, Woolliscroft, CI
core +6 more sources
Near-field acoustic holography in conical coordinates. [PDF]
The Journal of the Acoustical Society of America, 2009 Near-field acoustical holography (NAH) techniques can be optimized if the method capitalizes on the geometry of the noise source under investigation. Helmholtz-equation least squares method (HELS) uses the solutions of Helmholtz equation in spherical coordinates as basis functions for the pressure field. HELS is an efficient NAH technique if the source
Tracianne Neilsen +2 more
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