Time-lapse micro-CT analysis of fatigue microcrack propagation in cortical bone

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F20%3A00523137" target="_blank" >RIV/68378297:_____/20:00523137 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1748-0221/15/03/C03031" target="_blank" >https://doi.org/10.1088/1748-0221/15/03/C03031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/15/03/C03031" target="_blank" >10.1088/1748-0221/15/03/C03031</a>

Result language

angličtina

Original language name

Time-lapse micro-CT analysis of fatigue microcrack propagation in cortical bone

Original language description

In this paper, a time-lapse micro-tomography (micro-CT) analysis has been used for identifying of fatigue microcracks in human cortical bone. A custom designed table-top loading device was employed for in-situ fatigue loading in an X-ray scanner. The initial defects (thin microcracks) in the bone were induced by the first loading step with a peak force sufficient for crack initiation. Then, the in-situ fatigue loading was performed to induce propagation of the microcracks. Loading increments of several thousand load cycles, with period of approximately four seconds were used to investigate the crack propagation phenomena. The fatigue testing was finished after approximately 13,000 cycles. The micro-CT scans were performed using a modular X-ray imaging device. During the entire experimental procedure, the in-situ loading device was mounted on a rotary stage of the X-ray scanner. The tested specimen was scanned using the highresolution micro-CT in the representative loading steps (before initiation of the microcracks, directly after the initiation and each time after a defined increment of fatigue cycles was reached). The individual micro-CT reconstructions of the specimen were processed using differential tomography for the identification of the individual microcracks in the microstructure and for the investigation of the recorded by the in-situ loading device during the fatigue testing and the damage development identified from the mechanical data was connected to the changes in the microstructure identified in the micro-tomography results.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

20602 - Medical laboratory technology (including laboratory samples analysis; diagnostic technologies) (Biomaterials to be 2.9 [physical characteristics of living material as related to medical implants, devices, sensors])

Project

<a href="/en/project/EF16_019%2F0000766" target="_blank" >EF16_019/0000766: Engineering applications of microworld physics</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

—

Volume of the periodical

15

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

C03031

UT code for WoS article

000528039600031

EID of the result in the Scopus database

2-s2.0-85084192771