Nanoindentation of trabecular bone - comparison with uniaxial testing of single trabecula

0361139 - ÚTAM 2012 RIV CZ eng J - Journal Article
Jiroušek, Ondřej - Němeček, J. - Kytýř, Daniel - Kunecký, Jiří - Zlámal, Petr - Doktor, Tomáš
Nanoindentation of trabecular bone - comparison with uniaxial testing of single trabecula.
Chemické listy. Roč. 105, č. 17 (2011), s. 668-671. ISSN 0009-2770. E-ISSN 1213-7103
R&D Projects: GA ČR(CZ) GAP105/10/2305
Institutional research plan: CEZ:AV0Z20710524
Keywords : constitutive modelling * micromechanics * nanoindentation * trabecular bone
Subject RIV: JJ - Other Materials
Impact factor: 0.529, year: 2011
http://www.chemicke-listy.cz/common/content-issue_17-volume_105-year_2011.html

The article deals with a comparison between the properties assessed using nanoindentation and properties measured using uniaxial testing of single trabeculae. A novel experimental device has been developed which enables to measure single trabeculae in tension and compression with high precision. The strains at the surface of the sample are measured optically using a high-resolution CCD camera. The strain field is evaluated with very precise image correlation algorithm applied to whole surface of the loaded sample. The mechanical properties measured on micrometersized specimens using both methods (nanoindentation and micro-mechanical testing) are then prescribed to FE model of the trabecula sample. The sample is then loaded according to the experimental procedure. The response of the FE model (stress-strain curve) is compared to results from the tensile test.
Permanent Link: http://hdl.handle.net/11104/0198533