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Título: | Ultrasonic propagation in liquid and ice water drops. Effect of porosity |
Autor: | Mendonck, Michiel; Aparicio Secanellas, Sofía CSIC ORCID ; González Díaz, Cristóbal CSIC ORCID; González Hernández, Margarita CSIC ORCID ; Muñoz Caro, G.M.; Anaya Velayos, José Javier CSIC ORCID ; Cazaux, Stephanie | Palabras clave: | Ultrasonic techniques water ice liquid water porosity bubbles wave propagation |
Fecha de publicación: | 13-jul-2021 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Sensors 21: 4790 (2021) | Resumen: | This work studies ultrasonic propagation in liquid and ice water drops. The effect of porosity on attenuation of ultrasonic waves in the drops is also explored. The motivation of this research was the possible application of ultrasonic techniques to the study of interstellar and com-etary ice analogs. These ice analogs, made by vapor deposition onto a cold substrate at 10 K, can display high porosity values up to 40%. We found that the ultrasonic pulse was fully attenuated in such ice, and decided to grow ice samples by freezing a liquid drop. Several experiments were performed using liquid or frozen water drops with and without pores. An ultrasonic pulse was transmitted through each drop and measured. This method served to estimate the ultrasonic velocity of each drop by measuring drop size and time-of-flight of ultrasonic transmission. Propagation of ultrasonic waves in these drops was also simulated numerically using the SimNDT pro-gram developed by the authors. After that, the ultrasonic velocity was related with the porosity using a micromechanical model. It was found that a low value of porosity in the ice is sufficient to attenuate the ultrasonic propagation. This explains the observed lack of transmission in porous astrophysical ice analogs. | Descripción: | 20 páginas, 18 figuras, 5 tablas | Versión del editor: | http://dx.doi.org/10.3390/s21144790 | URI: | http://hdl.handle.net/10261/261316 | DOI: | 10.3390/s21144790 | Identificadores: | doi: 10.3390/s21144790 issn: 1424-8220 |
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Ultrasonic_propagation_in_liquid.pdf | 7,51 MB | Adobe PDF | Visualizar/Abrir |
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