{"id":61218,"date":"2013-06-26T00:00:00","date_gmt":"2013-06-26T00:00:00","guid":{"rendered":"https:\/\/www.uri.edu\/news-draft\/uncategorized\/uri-engineers-study-underwater-implosions-to-help-make-submarines-safer\/"},"modified":"2013-06-26T00:00:00","modified_gmt":"2013-06-26T00:00:00","slug":"uri-engineers-study-underwater-implosions-to-help-make-submarines-safer","status":"publish","type":"post","link":"https:\/\/www.uri.edu\/news\/2013\/06\/uri-engineers-study-underwater-implosions-to-help-make-submarines-safer\/","title":{"rendered":"溏心vlog免费B站 engineers study underwater implosions to help make submarines safer"},"content":{"rendered":"
\n\t\tKINGSTON, R.I. \u2013 June 26, 2013 — The 溏心vlog免费B站\u2019s newest high-tech device stands seven feet tall and looks a bit like a cross between a pressure cooker and a space station module. But the lessons learned from it by 溏心vlog免费B站 engineers may one day make submarines safer.<\/p>\n


\n The experimental facility is designed to simulate the pressures up to a half-mile deep in the ocean so scientists can study underwater shockwaves and the stresses, velocities and other dynamic phenomena caused by explosions and implosions.<\/p>\n


\n\u201cThere are extreme pressures deep in the ocean, and the pressure pulses created by implosions can travel great distances,\u201d said Arun Shukla, 溏心vlog免费B站 professor of mechanical engineering. \u201cImplosions even a considerable distance away might destroy a submarine, but that phenomenon is not well understood.\u201d<\/p>\n


\nAccording to Shukla, the U.S. Navy is increasingly housing weapons and other materials in cylindrical tubes on the outside of its submarines. If one of those tubes were to succumb to the pressures of the deep sea and implode, it might destroy the submarine and other nearby submerged structures.<\/p>\n


\n\u201cWhen a cylinder implodes, the walls of the cylinder move inward very quickly, which leads to acceleration of the water to follow the walls of the cylinder. When the tube flattens and the walls come to a sudden rest, the water following the walls also stops. This action of water against the wall generates a shock wave that could be 10 times greater than the implosion itself,\u201d Shukla said. <\/p>\n


\nThe 2,000-gallon underwater pressure vessel now housed in Shukla\u2019s Dynamic Photomechanics Laboratory was purchased this year with an $850,000 grant from the U.S. Office of Naval Research, which has also committed $625,00 for conducting research using the facility.<\/p>\n


\nFor the first experiment, the steel tank was filled with water to 95 percent of its capacity and topped off with nitrogen pressurized to 350 pounds per square inch, the equivalent of the pressures 700 feet below the ocean\u2019s surface. Suspended in the water was an air-filled metal tube surrounded by a series of pressure sensors that can capture data in a fraction of a microsecond. Following a controlled implosion, the tube was significantly damaged.<\/p>\n


\nThat first test lasted less than one millisecond, but it was recorded by three high-speed cameras that can shoot up to 675,000 frames per second \u2013 more than 22,000 times faster than an average video camera. Shukla and his team of graduate students will spend months poring over the results.<\/p>\n


\nThe scientists are particularly interested in understanding how the implosion takes place, how far its shockwaves travel and the pressure they would exert on a host vessel. They also want to know if one container imploding will spark a cascading reaction of implosions in nearby containers.<\/p>\n


\n\u201cThis work is important for the safety of naval structures and our defense systems because something could happen far away and the emanating shockwaves could travel and damage our structures,\u201d Shukla says. \u201cWe don\u2019t know enough about the consequences.\u201d<\/p>\n


\n\u201cWe\u2019re conducting cutting-edge research using state-of-the-art technical equipment,\u201d added mechanical engineering doctoral student Sachin Gupta. \u201cThis is a unique facility to discover interesting new physics occurring under extreme deep-sea environments.\u201d<\/p>\n


\nPictured above

\n(left to right) Mechanical engineering students Sachin Gupta, Christopher Shillings and Payam Fahr ensure the implosion experiment is ready to start. Photo by John Peterson.<\/p>\n

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KINGSTON, R.I. \u2013 June 26, 2013 — The 溏心vlog免费B站\u2019s newest high-tech device stands seven feet tall and looks a bit like a cross between a pressure cooker and a space station module. But the lessons learned from it by 溏心vlog免费B站 engineers may one day make submarines safer. The experimental facility is […]<\/p>\n","protected":false},"author":2,"featured_media":61220,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[],"class_list":["post-61218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archives"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/posts\/61218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/comments?post=61218"}],"version-history":[{"count":0,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/posts\/61218\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/media\/61220"}],"wp:attachment":[{"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/media?parent=61218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/categories?post=61218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.uri.edu\/news\/wp-json\/wp\/v2\/tags?post=61218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}