By a News Reporter-Staff News Editor at Health & Medicine Week -- Research findings on Bone Research are discussed in a new report. According to news reporting originating from Utrecht, Netherlands, by NewsRx correspondents, research stated, "Porous titanium alloys are considered promising bone-mimicking biomaterials. Additive manufacturing techniques such as selective laser melting allow for manufacturing of porous titanium structures with a precise design of micro-architecture."
Our news editors obtained a quote from the research from the Department of Rheumatology, "The mechanical properties of selective laser melted porous titanium alloys with different designs of micro-architecture have been already studied and are shown to be in the range of mechanical properties of bone. However, the fatigue behavior of this biomaterial is not yet well understood. We studied the fatigue behavior of porous structures made of Ti6Al4V ELI powder using selective laser melting. Four different porous structures were manufactured with porosities between 68 and 84% and the fatigue S-N curves of these four porous structures were determined. The three-stage mechanism of fatigue failure of these porous structures is described and studied in detail. It was found that the absolute S-N curves of these four porous structures are very different. In general, given the same absolute stress level, the fatigue life is much shorter for more porous structures. However, the normalized fatigue S-N curves of these four structures were found to be very similar. A power law was fitted to all data points of the normalized S-N curves. It is shown that the measured data points conform to the fitted power law very well, R-2 = 0.94. This power law may therefore help in estimating the fatigue life of porous structures for which no fatigue test data is available."
According to the news editors, the research concluded: "It is also observed that the normalized endurance limit of all tested porous structures (
For more information on this research see: Fatigue behavior of porous biomaterials manufactured using selective laser melting. Materials Science & Engineering C-Materials for Biological Applications, 2013;33(8):4849-4858. Materials Science & Engineering C-Materials for Biological Applications can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Bone Research).
The news editors report that additional information may be obtained by contacting S.A. Yavari, UMC Utrecht, Dept. of Rheumatol, NL-3584 CX Utrecht, Netherlands. Additional authors for this research include R. Wauthle, J. van der Stok, A.C. Riemslag, M. Janssen, M. Mulier, J.P. Kruth, J. Schrooten, H. Weinans and A.A. Zadpoor.
Keywords for this news article include: Europe, Utrecht, Physics, Titanium, Power Law, Netherlands, Light Metals, Bone Research
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