A method for evaluation the fatigue microcrack propagation in human cortical bone using differential X-ray computed tomography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00541052" target="_blank" >RIV/68378297:_____/21:00541052 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/ma14061370" target="_blank" >https://doi.org/10.3390/ma14061370</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14061370" target="_blank" >10.3390/ma14061370</a>

Result language

angličtina

Original language name

A method for evaluation the fatigue microcrack propagation in human cortical bone using differential X-ray computed tomography

Original language description

Fatigue initiation and the propagation of microcracks in a cortical bone is an initial phase of damage development that may ultimately lead to the formation of macroscopic fractures and failure of the bone. In this work, a time-resolved high-resolution X-ray micro-computed tomography (CT) was performed to investigate the system of microcracks in a bone sample loaded by a simulated gait cycle. A low-cycle (1000 cycles) fatigue loading in compression with a 900N peak amplitude and a 0.4Hz frequency simulating the slow walk for the initialization of the internal damage of the bone was used. An in-house developed laboratory X-ray micro-CT imaging system coupled with a compact loading device were employed for the in situ uni-axial fatigue experiments reaching a 2 μm effective voxel size. To reach a comparable quality of the reconstructed 3D images with the SEM microscopy, projection-level corrections and focal spot drift correction were performed prior to the digital volume correlation and evaluation using differential tomography for the identification of the individual microcracks in the microstructure. The microcracks in the intact bone, the crack formation after loading, and the changes in the topology of the microcracks were identified on a volumetric basis in the microstructure of the bone.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Volume of the periodical

14

Issue of the periodical within the volume

6

Country of publishing house

CH - SWITZERLAND

Number of pages

23

Pages from-to

1370

UT code for WoS article

000640061600001

EID of the result in the Scopus database

2-s2.0-85102994845