Microstructure Design to Improve Wear Resistance in Bioimplant UHMWPE Materials


          

刊名：Journal of Engineering Materials and Technology
作者：D. S. Li（School of Materials Science and Engineering, Georgia Institute of Technology）
H. Garmestani（School of Materials Science and Engineering, Georgia Institute of Technology）
S. Ahzi（IMFS, University of Strasbourg）
M. Khaleel（Computational Science and Mathematics Division, Pacific Northwest National Laboratory）
D. Ruch（Public Research Centre Henri Tudor, AMS）
刊号：712B0011
ISSN：0094-4289
出版年：2009
年卷期：2009, vol.131, no.4
页码：041211-1--041211-7
总页数：7
分类号：TB3
关键词：Materials design；Bioimplant；UHMWPE；Wear resistance
参考中译：
语种：eng
文摘：A microstructure design framework for multiscale modeling of wear resistance in bioim-plant materials is presented here. The increase in service lifetime of arthroplasty depends on whether we can predict wear resistance and microstructure evolution of a bioimplant material made from ultra high molecular weight polyethylene during processing. Experimental results show that the anisotropy introduced during deformation increases wear resistance in desired directions. After uniaxial compression, wear resistance along the direction, perpendicular to compression direction, increased 3.3 times. Micromechanical models are used to predict microstructure evolution and the improvement in wear resistance during processing. Predicted results agree well with the experimental data. These models may guide the materials designer to optimize processing to achieve better wear behavior along desired directions.



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