Statistics – Applications
Scientific paper
Oct 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp1290..126g&link_type=abstract
In: Microgravity applications programme: Successful teaming of science and industry. Edited by Andrew Wilson, coordination: Benn
Statistics
Applications
Physical Sciences, Advanced Foams, Microgravity
Scientific paper
Metallic and aqueous foams are challenging materials for both fundamental and applied research. They distinguish themselves from other materials by their very low density and, especially in the case of metallic foams, by high specific stiffness, good damping and high-energy absorption capability. They are therefore becoming increasingly popular for industrial applications. Driven by industry demand, efforts have been made in recent years to improve foam quality. Microgravity conditions are essential for further analysis and improvement of aqueous and metallic foams. Experimental devices for in situ and ex situ analysis were developed within this MAP project. Foam properties such as drainage, rupture events and foam density were analysed quantitatively, as well as the influence of external conditions like gas pressure and foaming gas. Hardness and wetting angles for different stabilising particles were compared; mica is proposed as a suitable candidate for aluminium foams. In the case of aqueous foams, surfactants and proteins are found to have a different microscopic origin of stabilisation. A monodisperse aqueous foam generator will be adapted for metallic foams. Foam stabilisation mechanisms and foam evolution simulations were performed. 2-D X-ray foam images were successfully simulated.
Andersson Martin
Argillier Jean-François
Babcsan Norbert
Banhart John
Baumgärtner Frank
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