Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load
- NázevTitle
- Real-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical loadReal-time X-ray microradiographic imaging and image correlation for local strain mapping in single trabecula under mechanical load
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- T. Doktor, O. Jiroušek, D. Kytýř, P. Zlámal, I. Jandejsek
- DOIDOI
- 10.1088/1748-0221/6/11/C11007
- Časopis / citaceJournal / citation
- Journal of Instrumentation. 2011, 6(11), 1-6. ISSN 1748-0221.
- RokYear
- 2011
- JazykLanguage
- eng
- WoSWoS
- 000298320400007
- ScopusScopus
- 2-s2.0-82955201714
- RIVRIV
- RIV/68407700:21670/11:00184234!RIV12-MSM-21670___
- ProjektProject
- Využití radionuklidů a ionizujícího zářeníApplication of radionuclides and ionising radiation
AbstraktAbstract
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 tested in tension and three-point bending until complete fracture occured. Real-time microradiography in conjunction with digital image correlation has been used. 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. Designed loading device enables for precise control of the applied displacement which is important for the post-yield behavior assessment. Tested experimental setup enables to combine micromechanical testing of the basic building block of trabecular bone with time-lapse X-ray radiography to assess the mechanical properties of single human trabecula and capture the softening curve with sufficient precision.
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 tested in tension and three-point bending until complete fracture occured. Real-time microradiography in conjunction with digital image correlation has been used. 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. Designed loading device enables for precise control of the applied displacement which is important for the post-yield behavior assessment. Tested experimental setup enables to combine micromechanical testing of the basic building block of trabecular bone with time-lapse X-ray radiography to assess the mechanical properties of single human trabecula and capture the softening curve with sufficient precision.