A comparison of inverse boundary element method and near-field acoustical holography [PDF]
, 1999 An inverse boundary element method (IBEM) is used to estimate the surface velocity of a rolling tyre from measurements of the near-field pressure. Subsequently, the sound pressure is calculated over a finite plane surface next to the tyre from the ...
Hald, Jørgen +2 more
core
Direct analysis of dispersive wave fields from near-field pressure measurements [PDF]
, 2011 Flexural waves play a significant role for the radiation of sound from plates. The analysis of flexural wave fields enables the detection of sources and transmission paths in plate-like structures.
Horchens, L. +2 more
core +2 more sources
ACOUSTICAL HOLOGRAPHY FOR VISUALIZATION OF SOUND [PDF]
, 2008 : This project deals with simulation, comparison and optimisation of different methods for near field array visualisation of the sound fields. These methods are based on principles of the Near Field Acoustical Holography (NAH).
Petr Grätz
core
Dual-Mode 1-D Linear Ultrasound Array for Image-Guided Drug Delivery Enhancement Without Ultrasound Contrast Agents. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2023 Williams RP +8 more
europepmc +1 more source
The Effect of Nonlinear Propagation on Near-field Acoustical Holography [PDF]
, 2007 Near-field acoustical holography (NAH) has been used extensively for acoustical imaging of infinitesimal-amplitude (or small-amplitude) sources. However, recent interests are in the application of NAH to image finite-amplitude (or high-amplitude) sources
Shepherd, Micah Raymond
core +1 more source
Comparative Characterization of Nonlinear Ultrasound Fields Generated by Sonalleve V1 and V2 MR-HIFU Systems. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2023 Karzova MM +6 more
europepmc +1 more source
High resolution near-field acoustic holography
, 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.
openaire +1 more source
Characterization of Rocket and Jet Noise using Near-Field Acoustic Holography Methods [PDF]
, 2011 As rockets and jets on military aircraft become more powerful, the noise they produce can lead to structural fatigue, hearing damage, and community disturbances.
James, Michael M. +3 more
core +1 more source
Comparison of three full-field optical measurement techniques applied to vibration analysis. [PDF]
Sci Rep, 2023 O'Donoughue P +11 more
europepmc +1 more source
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 cyclostationary signal analysis with the equivalent source NAH algorithm to develop a sound imaging method
Zhu Song, Zhang Erliang, Gao Xiaoyu
openaire +1 more source