{"id":14786,"date":"2024-05-13T10:19:55","date_gmt":"2024-05-13T13:19:55","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=14786"},"modified":"2024-05-13T10:19:55","modified_gmt":"2024-05-13T13:19:55","slug":"seda-que-suprime-el-sonido-puede-enmascarar-sonidos-con-gran-eficiencia","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=14786","title":{"rendered":"Seda que suprime el sonido puede enmascarar sonidos con gran eficiencia"},"content":{"rendered":"<p>Una colaboraci\u00f3n interdisciplinaria de investigadores del MIT y otras instituciones desarroll\u00f3 una tela de seda de un mil\u00edmetro de espesor capaz de suprimir sonidos en habitaciones o espacios grandes; El material el\u00e9ctricamente activo act\u00faa como un &#8220;espejo de sonido&#8221; y puede reducir el ruido ambiental hasta en un 75%\u00a0de dos maneras diferentes.\u00a0En uno, la tela vibrante genera ondas sonoras que interfieren con un ruido no deseado para cancelarlo, similar a los auriculares con cancelaci\u00f3n de ruido, que funcionan bien en un espacio peque\u00f1o como los o\u00eddos, pero no en recintos grandes como habitaciones o aviones.En la otra t\u00e9cnica, m\u00e1s sorprendente, la tela se mantiene quieta para suprimir las vibraciones que son clave para la transmisi\u00f3n del sonido. Esto evita que el ruido se transmita a trav\u00e9s de la tela y silencia el volumen m\u00e1s all\u00e1. Este segundo enfoque permite reducir el ruido en espacios m\u00e1s grandes, como habitaciones o veh\u00edculos.\u00a0Este trabajo est\u00e1 financiado, en parte, por la Fundaci\u00f3n Nacional de Ciencias (NSF), la Oficina de Investigaci\u00f3n del Ej\u00e9rcito (ARO), la Agencia de Reducci\u00f3n de Amenazas de Defensa (DTRA) y la Fundaci\u00f3n de Investigaci\u00f3n de Antiguos Alumnos de Wisconsin.<\/p>\n<hr \/>\n<p id=\"d10327615\" class=\"article-section__header section__title main abstractlang_en main\"><strong>Abstract<\/strong><\/p>\n<div class=\"article-section__content en main\">\n<p>Whether intentionally generating acoustic waves or attempting to mitigate unwanted noise, sound control is an area of challenge and opportunity. This study investigates traditional fabrics as emitters and suppressors of sound. When attached to a single strand of a piezoelectric fiber actuator, a silk fabric emits up to 70\u00a0dB of sound. Despite the complex fabric structure, vibrometer measurements reveal behavior reminiscent of a classical thin plate. Fabric pore size relative to the viscous boundary layer thickness is found\u2014through comparative fabric analysis\u2014to influence acoustic-emission efficiency. Sound suppression is demonstrated using two distinct mechanisms. In the first, direct acoustic interference is shown to reduce sound by up to 37 dB. The second relies on pacifying the fabric vibrations by the piezoelectric fiber, reducing the amplitude of vibration waves by 95% and attenuating the transmitted sound by up to 75%. Interestingly, this vibration-mediated suppression in principle reduces sound in an unlimited volume. It also allows the acoustic reflectivity of the fabric to be dynamically controlled, increasing by up to 68%. The sound emission and suppression efficiency of a 130 \u00b5m silk fabric presents opportunities for sound control in a variety of applications ranging from apparel to transportation to architecture.<\/p>\n<p><a href=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2024\/05\/Advanced-Materials-2024-Yang-Single-Layer-Silk-and-Cotton-Woven-Fabrics-for-Acoustic-Emission-and-Active-Sound.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"aligncenter wp-image-5168\" src=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png\" alt=\"Descargar archivo pdf\" width=\"75\" height=\"93\" srcset=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png 243w, https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1.png 310w\" sizes=\"(max-width: 75px) 100vw, 75px\" \/><\/a><strong>Fuente:<\/strong> <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/adma.202313328\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/onlinelibrary.wiley.com<\/em><\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Una colaboraci\u00f3n interdisciplinaria de investigadores del MIT y otras instituciones desarroll\u00f3 una tela de seda de un mil\u00edmetro de espesor capaz de suprimir sonidos en&hellip; <\/p>\n","protected":false},"author":1,"featured_media":14788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[37,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/14786"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14786"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/14786\/revisions"}],"predecessor-version":[{"id":14789,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/14786\/revisions\/14789"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/14788"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}