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Calculation of the ceramics Weibull parameters
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SYSNO ASEP 0373509 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Calculation of the ceramics Weibull parameters Author(s) Fuis, Vladimír (UT-L) RID, ORCID
Návrat, Tomáš (UT-L)Number of authors 2 Source Title World Academy of Science, Engineering and Technology - ISSN 2010-376X
Roč. 58, - (2011), s. 642-647Number of pages 6 s. Action International Conference on Bioinformatics and Biomedicine 2011 Event date 26.10.2011-28.10.2011 VEvent location Bali Country ID - Indonesia Event type WRD Language eng - English Country ID - Indonesia Keywords biomaterial parameters ; Weibull statistics ; ceramics Subject RIV BO - Biophysics CEZ AV0Z20760514 - UT-L (2005-2011) Annotation The standard way of calculation of the ceramic material parameters consists in carrying out a set of 3 or 4 point bending tests of specimens cut out from parts of the ceramic material to be analysed. In case of ceramic heads of hip joint endoprosthesis, it is not possible to cut out specimens of required dimensions because the heads are too small (if the cut out specimens were smaller than the normalised ones, the material parameters derived from them would exhibit higher strength values than those which the given ceramic material really has). On that score, a special testing jig was made, in which 40 heads were destructed. From the measured values of circumferential strains of the head’s external spherical surface under destruction, the state of stress in the head under destruction was established using the final elements method (FEM). From the values obtained, the sought for parameters of the ceramic material were calculated using Weibull’s weakest-link theory. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2012
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