alexa Perlite Metal Syntactic Foam (PMSF) In Impact Engineering
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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9th World Congress on Materials Science and Engineering
June 12-14, 2017 Rome, Italy

Thomas Fiedler and Mehdi Taherishargh
University of Newcastle, Australia
ScientificTracks Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-067
Abstract
Metallic foams exhibit a relatively constant deformation resistance during compression. As a result, they are highly attractive for impact engineering where controlled energy absorption and deceleration is required. Over the past decades, metallic foams have attracted growing interest due to their unique and multi-functional properties. However, to this date they have often failed to become a viable commercial solution. The key inhibitors are their high cost and the variability of mechanical properties. Perlite metal syntactic foam (PMSF, see Fig. 1) is a novel material that has the potential to overcome both limitations. It combines inexpensive raw materials (i.e., expanded perlite particles and standard casting alloys) with a close control of geometry and hence mechanical properties. In the presented study, PMSF is probed for its suitability as the energy absorbing element of an automotive crash cushion. In the first step, the desired material properties are derived from the permissible forces during the impact. In the following, the mechanical properties of PMSF are tailored to meet these requirements. This is achieved by increasing the perlite volume fraction and selecting pure aluminum as the metallic phase. To prevent the likelihood of global buckling a PMSF cylinder is selected as the energy-absorbing element. The component is tested both numerically and in a 2.5 tons drop test that replicates the forces occurring during an automotive impact.
Biography

Thomas Fiedler has completed his Master’s degree in Mechanical Engineering from the University of Erlangen-Nuremberg (Germany) in 2004. He continued his academic career at the University of Aveiro (Portugal). After completing his PhD in 2007, he started working as a Post-doctorate at the University of Newcastle, where he is currently working as an Associate Professor. He has research expertise in cellular materials (metals and ceramics) and composite materials, experimental and computational mechanics, finite element methods, Monte Carlo methods, and mechanical and thermal material testing.

Email: [email protected]

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