Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load

0367264 - ÚTAM 2012 RIV GB eng J - Článek v odborném periodiku
Doktor, Tomáš - Jiroušek, Ondřej - Kytýř, Daniel - Zlámal, Petr - Jandejsek, Ivan
Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load.
Journal of Instrumentation. Roč. 6, č. 11 (2011), s. 7-12. ISSN 1748-0221. E-ISSN 1748-0221.
[International workshop on radiation imaging detectors /13./. Zurich, 03.07.2011-07.07.2011]
Grant CEP: GA ČR(CZ) GAP105/10/2305
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: pixelated detectors and associated VLSI electronics * X-ray radiography and digital radiography * digital image correlation * human trabecula
Kód oboru RIV: JJ - Ostatní materiály
Impakt faktor: 1.869, rok: 2011
http://dx.doi.org/10.1088/1748-0221/6/11/C11007

X-ray microradiography was used to quantify the strains in loaded human trabecula. Samples of isolated trabeculae from human proximal femur were extracted and glued in a loading machine specially designed for testing of small specimens. The samples were then tested in tension and three-point bending until complete fracture occured. Real-time microradiography in conjunction with digital image correlation has been employed. The samples were irradiated continuously by X-rays. Radiographs were acquired using 0.25s exposure time with hybrid single-photon counting silicon pixel detector Medipix2. Design of the loading device enables for precise control of the applied displacement which is important for the post-yield behavior assessment.
Trvalý link: http://hdl.handle.net/11104/0202007