32160 20211117102002.0 doi 10.15446/dyna.v82n190.43635 sideral 90417 ART-2015-90417 eng Lladó-Paris, J. Universidad de Zaragoza (orcid)0000-0002-4367-3729 Acoustic analysis of the drainage cycle in a washing machine 2015 Access copy available to the general public Unrestricted Washing machine manufacturers are working towards producing quieter appliances as many people consider noise emission a key factor when buying. Although the spinning cycle is the noisiest, the amount of noise the pump makes is the cause for many users’ complaints. In an attempt to reduce the noise emitted when a washing machine is pumping out, an experimental study was performed. First, the measurement of the sound pressure allowed us to identify the main sources of noise as the electric motor and the vibration of the cabinet. Next, a detailed analysis based on the measurement of the vibration of the cabinet provided information about the predominant radiating panels. It was also inferred that the electromagnetic noise is drowned out by the structure-borne noise. Finally, several proposals to diminish the sound power were analyzed, and a reduction of 3 dBA was achieved by decreasing the contact zone of the pump with the kick plate. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 0.238 2015 Engineering (miscellaneous) 2015 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sánchez-Tabuenca, B. Universidad de Zaragoza (orcid)0000-0003-3909-5599 5004 545 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Ingeniería Mecánica 82, 190 (2015), 121-127 DYNA (Medellin) Dyna 0012-7353 1554332 http://zaguan.unizar.es/record/32160/files/texto_completo.pdf Versión publicada 108137 http://zaguan.unizar.es/record/32160/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:32160 articulos driver 2021-11-15-14:33:34 ARTICLE