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
- Klíčová slovaKeywords
- Pixelated detectors and associated VLSI electronic, X-ray radiography and digital radiography, Digital Image Correlation, human trabecula
- DOIDOI
- 10.1088/1748-0221/6/11/C11007
- Časopis / citaceJournal / citation
- Journal of Instrumentation 6(11), C11007-C11007 (2011) · ISSN 1748-0221
- RokYear
- 2011
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Využití radionuklidů a ionizujícího zářeníApplication of radionuclides and ionising radiation
- CitovánoCited by
- 5 (OpenAlex)
- Plný text (open access)Full text (open access)
- https://iopscience.iop.org/article/10.1088/1748-0221/6/11/C11007/pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
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.