Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Benjamin A. Cray"'
Autor:
Benjamin A. Cray, Ivars P. Kirsteins
Publikováno v:
Acoustics. 1:808-815
This paper compares two different approaches to deriving shading coefficients (weights) for optimal first order and second order directional sensors (that is; sonobuoys, vectors and dyadic sensors). The first approach is an analytical or a physics-ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6da24c8c8783b30c429cd7ca1a2ef2c9
https://doi.org/10.3390/acoustics1040047
https://doi.org/10.3390/acoustics1040047
Autor:
Benjamin A. Cray
Publikováno v:
The Journal of the Acoustical Society of America. 138:3765-3772
Directivity is essentially a measure of a sonar array's beamwidth that can be obtained in a spherically isotropic ambient noise field; narrow array mainbeam widths are more directive than broader mainbeam widths. For common sonar systems, the directi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00abf2ff8a22e733e08add84ad3b19f
https://doi.org/10.1121/1.4938019
https://doi.org/10.1121/1.4938019
Autor:
Benjamin A. Cray, Andrew J. Hull
Publikováno v:
Journal of Sound and Vibration. 333:4960-4976
This paper develops a solution method for the longitudinal motion of a rod or the flexural motion of a beam of infinite length whose area varies periodically. The conventional rod or beam equation of motion is used with the area and moment of inertia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa1b5168f9016031d162acfa312927d2
https://doi.org/10.1016/j.jsv.2014.04.041
https://doi.org/10.1016/j.jsv.2014.04.041
Autor:
Benjamin A. Cray, Geoffrey R. Moss
Publikováno v:
The Journal of the Acoustical Society of America. 136:EL103-EL108
A planewave, incident on a panel, produces an acoustic trace wavelength that propagates along the surface of the panel. The trace wavelength excites the panel into vibration, creating structural waves within the panel that propagate. These structural
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5df617ae3d609fb553149b94a279235
https://doi.org/10.1121/1.4885479
https://doi.org/10.1121/1.4885479
Autor:
Benjamin A. Cray, Dimitri Donskoy
Publikováno v:
The Journal of the Acoustical Society of America. 130:EL311-EL315
Preliminary measurements and numerical predictions reveal that simple, and relatively small, horns generate remarkable amplification of acoustic particle velocity. For example, below 2 kHz, a 2.5 cm conical horn has a uniform velocity amplification r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::413da74948dfa3a11b0582368275a1b6
https://doi.org/10.1121/1.3642644
https://doi.org/10.1121/1.3642644
Autor:
Benjamin A. Cray
Publikováno v:
The Journal of the Acoustical Society of America. 144:1917-1917
Direction cosine measurements, obtained from an array of vector sensors, are processed and used to estimate the location and motion of a moving source. Nuttall derived this unpublished TMA algorithm in 2006, which recently was reviewed, implemented,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6c0310b752ffeb3b22dd32582cb8750
https://doi.org/10.1121/1.5068396
https://doi.org/10.1121/1.5068396
Publikováno v:
The Journal of the Acoustical Society of America. 144:1946-1946
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63dbec7508ae628846563fa335689588
https://doi.org/10.1121/1.5068513
https://doi.org/10.1121/1.5068513
Publikováno v:
The Journal of the Acoustical Society of America. 120:164-170
Experiments confirm that a laser Doppler vibrometer can be used to detect acoustic particle velocity on a fluid-loaded acoustically compliant, optically reflective surface. In these experiments, which were completed at the Acoustic Test Facility of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09be965c8041217de3e09c13b740e6e8
https://doi.org/10.1121/1.2207569
https://doi.org/10.1121/1.2207569
Publikováno v:
The Journal of the Acoustical Society of America. 113:1526-1532
The theoretical directivity of a single combined acoustic receiver, a device that can measure many quantities of an acoustic field at a collocated point, is presented here. The formulation is developed using a Taylor series expansion of acoustic pres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4e781c0501b64b8257c82062a3e61ff
https://doi.org/10.1121/1.1543851
https://doi.org/10.1121/1.1543851
Autor:
Benjamin A. Cray, Albert H. Nuttall
Publikováno v:
The Journal of the Acoustical Society of America. 110:324-331
Some of the features unique to beamforming a linear array of acoustic velocity sensors, which are not present with scalar-sensing elements (such as conventional pressure sensors), are described in this paper. Four types of sensors are considered here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5a968c4126ca2e098f7d674d9cbec41
https://doi.org/10.1121/1.1373706
https://doi.org/10.1121/1.1373706