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handle: 10261/7977 , 10261/4862
Los avances en las aplicaciones de los macrosonidos están muy ligados al desarrollo de transductores y sistemas adecuados para la generación eficiente de los efectos a utilizar. Así las aplicaciones en sólidos generalmente requieren altas tensiones para producir fricción, calor y otros efectos secundarios. Las aplicaciones en líquidos se basan generalmente en la cavitación y requieren transductores capaces de producir un cierto nivel de presión acústica (umbral de cavitación) a través del volumen líquido. Las aplicaciones en gases, que se basan generalmente en la velocidad de vibración y en la presión de radiación, requieren amplitudes de vibración elevadas y un buen acoplamiento de impedancias. Este trabajo presenta algunos aspectos básicos del campo de los macrosonidos y hace especial énfasis en los transductores empleados y en los fenómenos explotados para el desarrollo de nuevas aplicaciones.
Advances in macrosonic applications are very much dependent on the development of suitable transducers and systems for the efficient generation of the effects to be exploited. Thus, applications in solids generally require high stresses to produce friction, heat and other secondary effects. Applications in liquids are generally based on cavitation and require transducers able to reach a certain sound pressure level (cavitation threshold) through a liquid volume. Applications in gases, which are generally based on particle velocity and radiation pressure, require high vibration amplitudes and good impedance matching.
[ES] El campo de los sonidos y ultrasonidos de alta intensidad es conocido en la actualidad con el nombre de macrosonidos. Este campo comprende una gran variedad de aplicaciones que están en general relacionadas con la explotación de los fenómenos no lineales asociados a las altas amplitudes.
[EN] The field of high-power sonics and ultrasonics is presently known as macrosonics. It comprises a great variety of applications which are generally related with the exploitation of nonlinear phenomena associated to the high amplitudes.
This paper deals with some basic aspects of the macrosonic field and makes special emphasis on the transducers used and phenomena exploited for the development of new applications.
7 pages.-- PACS nrs.: 43.35; 43.25.-- Presented as communication at Forum Acusticum Sevilla 2002: http://hdl.handle.net/10261/7977.
Peer reviewed
Macrosonic field, Transducers, High-power sonics, Ultrasonics, Nonlinear phenomena
Macrosonic field, Transducers, High-power sonics, Ultrasonics, Nonlinear phenomena
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