|
. | . |
|
by Staff Writers New York NY (SPX) Jul 27, 2015
A team of researchers reports success in pioneering tests of a layered material with a lightweight metal matrix syntactic foam core that holds significant potential for automobiles, trains, ships, and other applications requiring lightweight structural components that retain their strength even when bent or compressed. The research team of Nikhil Gupta, a NYU School of Engineering associate professor in the Department of Mechanical and Aerospace Engineering, working with the Toledo, Ohio, company Deep Springs Technology and the U.S. Army Research Laboratory, published their findings in Materials Science and Engineering: A. Conventional metal foams have gas-filled pores within the metal, which reduce weight but pose some drawbacks, such as difficulty in controlling the size and shape of the pores during manufacturing. By contrast, metal matrix syntactic foams incorporate porosity in their foam-like structure by means of hollow particles. In recent years there has been an upsurge in the use of these materials, mainly because of their compressive strength. However, bending strength was a limitation for many potential applications, notably automotive structures. Metallic foams previously have been sandwiched between two stiff sheets, which provide increased flexural strength while the foam core allows the material to withstand large deformation and absorb energy. But Gupta and his colleagues are the first to develop a metal matrix syntactic foam core sandwich composite. Their study focused on an aluminum alloy filled with hollow alumina particles sandwiched with carbon fabric face-sheets. The researchers discovered that the resulting layered material reduced weight but also increased stiffness and offered high energy absorption. These qualities make the metal matrix syntactic foam sandwich attractive for automotive floor board panels and other applications in which bending properties are important. "This work could result in a new generation of ships and ground vehicles for both the military and civilian sectors," says Gupta. "Trains can also benefit from the lightweight and high energy absorbing panels made possible by the new sandwich composite."
Related Links New York University Polytechnic School of Engineering Space Technology News - Applications and Research
|
|
The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service. |