Caracterización del campo acústico generado por transductores focalizados
[EN] The study of the acoustic field characteristics generated by focusing sources, both in linear and nonlinear regime, is an active field of research as they are relevant in most of the ultrasonic applications in medicine and industry. In this work we evaluate, experimentally and numerically the l...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/45608 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/45608 |
| Access Level: | acceso abierto |
| Palabra clave: | Ultrasonidos Focalización Shift lineal Transductores focalizados Shift no lineal Caracterización FISICA APLICADA |
| Sumario: | [EN] The study of the acoustic field characteristics generated by focusing sources, both in linear and nonlinear regime, is an active field of research as they are relevant in most of the ultrasonic applications in medicine and industry. In this work we evaluate, experimentally and numerically the linear shift phenomenon (the distance between the geometrical focus of the focused source and the on-axis maximum pressure position in linear regime, real focus) and the nonlinear shift phenomenon (the movement of the pressure maximum position along the axis of focused acoustic beams under increasing driving voltages) of an ultrasonic beam with medium Fresnel number (NF=6), it is important to cover this region of focusing as some of the medical devices are there, as well as we demonstrate that the nonlinear shift is able to move the on axis maximum pressure location beyond the geometrical focus. |
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