Autor según el artículo: Dubert D; Ollé J; Jurado R; Gavaldà J; Laverón-Simavilla A; Ruiz X; Shevtsova V

Departamento: Química Física i Inorgànica

Autor/es de la URV: Dubert, Diana Cristina / Gavaldà Martínez, Josefa / JURADO CRUZ, RAFAEL / Ruiz Martí, José Javier

Palabras clave: Thermodiffusion Ternary mixtures Spectral entropy Soret Microgravity environment Linear correlation between iss acceleration signals Iss vibrational environment Iss acceleration signal Iss International-space-station Diffusion Dcmix experiment Benchmark

Resumen: © 2018, Springer Nature B.V. A comparative analysis of the vibratory environment of the DCMIX2/3 thermodiffusion experiments is presented here by using acceleration signals coming from different sensors placed in the Destiny, Columbus and Kibo modules. The es03 sensor nearest to the experimental device and located inside the Glovebox (Destiny module) has been defined as reference. Data were downloaded from the NASA PIMS website paying special attention to the runs coinciding with disturbances such as dockings or extravehicular activities (EVAs) as they could particularly affect the International Space Station (ISS) microgravity levels. The analyses have been made minute by minute for the three acceleration components by using the Frequency Factor Index (FFI), Spectral Entropy (SEN) and Root Mean Square (RMS) values evaluated over one-third-octave frequency bands. Spearman’s rank correlation coefficient and the coherence function have been used to investigate the degree of linear correlation between the reference signal and the other ones. SEN evolution showed different patterns compared to the reference. Also, RMS values surpassing the ISS microgravity limits were detected in all sensors, mainly at low frequency bands (< 10 Hz) and prevailing on zA direction. However the sensors located in the Destiny module better accomplished the ISS vibratory limits requirements. Finally, some degree of linear correlation at structural frequencies (< 3 Hz) has also been detected. Overall, the sensors placed in the Destiny, Columbus and Kibo modules presented different vibratory characteristics and, despite they offer valuable information of the whole environment, may not be sufficient to properly characterize DCMIX2/3 experiments.

Áreas temáticas: Thermodynamics Physics and astronomy (miscellaneous) Physics and astronomy (all) Modeling and simulation Mechanics General physics and astronomy General engineering Engineering, multidisciplinary Engineering, aerospace Engineering (miscellaneous) Engineering (all) Engineering Engenharias iii Engenharias ii Biotecnología Applied mathematics

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 09380108

Direcció de correo del autor: dianacristina.dubert@urv.cat josepxavier.ruiz@urv.cat fina.gavalda@urv.cat

Identificador del autor: 0000-0002-7308-5872 0000-0003-4020-4457 0000-0001-7881-4192

Fecha de alta del registro: 2023-02-26

Versión del articulo depositado: info:eu-repo/semantics/submittedVersion

Enlace a la fuente original: https://link.springer.com/article/10.1007/s12217-018-9640-7

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Microgravity Science And Technology. 30 (5): 683-697

Referencia de l'ítem segons les normes APA: Dubert D; Ollé J; Jurado R; Gavaldà J; Laverón-Simavilla A; Ruiz X; Shevtsova V (2018). Characterization of the Accelerometric Environment of DCMIX2/3 Experiments. Microgravity Science And Technology, 30(5), 683-697. DOI: 10.1007/s12217-018-9640-7

DOI del artículo: 10.1007/s12217-018-9640-7

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2018

Tipo de publicación: Journal Publications