Jose San Juan
I am the leader of the Physical Metallurgy Research Group at the University of the Basque Country UPV/EHU, involving five full Professors from the Department of Physics of Condensed Matter and the Department of Applied Physics. We are proud of the development of the laboratories on Internal Friction and Mechanical Spectroscopy technique, pioneer in Spain, as well as the seed laboratory for the creation of the Electron Microscopy Service for Materials Science of the UPV/EHU.I held the position of full Professor on Physical Metallurgy since 1995, and I was Visiting Professor at the Dept. of Materials Science and Engineering of the Massachusetts Institute of Technology in 2006 and 2007. Recently, in 2014 I was the Chairman of the International Conference on Martensitic Transformations, ICOMAT.I have published more than 160 scientific publication classed in the JCR.
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In the present work we present the damping behavior of such metal matrix composites, has been studied by Mechanical Spectroscopy, as a function of temperature, between 150 K and 400 K, and for different frequencies, between 3x10-3 and 3 Hz. These results are very promising, because the internal friction spectra show a very high maximum linked to the thermo elastic martensitic transformation, as well as a high damping background, in a very broad range in temperature. Besides, the temperature of the maximum of damping can be controlled, in order to match the maximum of damping for each particular application.
In the present work we present the damping behavior of such metal matrix composites, has been studied by Mechanical Spectroscopy, as a function of temperature, between 150 K and 400 K, and for different frequencies, between 3x10-3 and 3 Hz. These results are very promising, because the internal friction spectra show a very high maximum linked to the thermo elastic martensitic transformation, as well as a high damping background, in a very broad range in temperature. Besides, the temperature of the maximum of damping can be controlled, in order to match the maximum of damping for each particular application.