Life time of composite implants on the basis of creep tests
Patrycja Rosół, Jan Chłopek Akademia Górniczo-Hutnicza, Wydział Inżynierii Materiałowej i Ceramiki, al. Mickiewicza 30, 30-059 Kraków
Annals 3 No. 7, 2003 pages 291-195
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abstract The aim of this study was an analysis of the creeping process in in vitro conditions. Samples made of polysulfone and its composites reinforced with carbon fibres to be applied as load bearing implants were examined. The investigations were carried out at room temperature in air and in vitro in Ringer’s solution. Mechanical tests were carried out on Zwick 1435 machine, with the force between 300÷1800 N. We observed nominal strain and the time of failure of investigated sample. As a result we observed the data enabling to estimate long-term samples’ behaviour under mechanical tension and biological environment’s influence on it. On the basis of completed experimental data critical force was determined, under which the material can work for long time without failure and the life time for remote load and acceptable deformation of investigated samples was estimated. Key words: implants, creep, composites, life time