Crack initiation processes in acrylic bone cement
Crack initiation processes in acrylic bone cement
A major constraint in improving the understanding
of the micromechanics of the fatigue failure process
and, hence, in optimizing bone cement performance is
found in the uncertainties associated with monitoring the
evolution of the internal defects that are believed to dominate in vivo failure.
The present study aimed to synthesize high resolution imaging with complementary damage monitoring/detection techniques.
As a result, evidence of the chronology of failure has been obtained. The earliest stages of crack initiation have been captured and it is proposed that, in the presence of a pore, crack initiation may occur away from the pore due to the combined influence of pore morphology and the presence of defects within regions of stress concentration.
Furthermore, experimental evidence shows that large agglomerations of BaSO4 are subject to microcracking during fatigue, although in the majority of cases, these are not the primary cause of failure.
It is proposed that cracks may then remain contained
within the agglomerations because of the clamping effect
of the matrix during volumetric shrinkage upon curing.
1088-1097
Sinnett-Jones, P. E.
a99c76f5-2816-4510-9f84-6297e716aa44
Browne, M.
6578cc37-7bd6-43b9-ae5c-77ccb7726397
Moffat, A. J.
bb73ad4c-d238-404a-8728-6f1a566d592f
Jeffers, J. R. T.
18370c0c-695e-4694-9c8e-2f4a6190ef7f
Saffari, N.
5a5dd869-96f3-4f81-ae25-840c800ca969
Buffiere, J.-Y
2764cdb9-65b1-48dd-96b3-508f8d1e9a8e
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
15 June 2009
Sinnett-Jones, P. E.
a99c76f5-2816-4510-9f84-6297e716aa44
Browne, M.
6578cc37-7bd6-43b9-ae5c-77ccb7726397
Moffat, A. J.
bb73ad4c-d238-404a-8728-6f1a566d592f
Jeffers, J. R. T.
18370c0c-695e-4694-9c8e-2f4a6190ef7f
Saffari, N.
5a5dd869-96f3-4f81-ae25-840c800ca969
Buffiere, J.-Y
2764cdb9-65b1-48dd-96b3-508f8d1e9a8e
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Sinnett-Jones, P. E., Browne, M., Moffat, A. J., Jeffers, J. R. T., Saffari, N., Buffiere, J.-Y and Sinclair, I.
(2009)
Crack initiation processes in acrylic bone cement.
Journal of Biomedical Materials Research Part A, 89A (4), .
(doi:10.1002/jbm.a.32037).
Abstract
A major constraint in improving the understanding
of the micromechanics of the fatigue failure process
and, hence, in optimizing bone cement performance is
found in the uncertainties associated with monitoring the
evolution of the internal defects that are believed to dominate in vivo failure.
The present study aimed to synthesize high resolution imaging with complementary damage monitoring/detection techniques.
As a result, evidence of the chronology of failure has been obtained. The earliest stages of crack initiation have been captured and it is proposed that, in the presence of a pore, crack initiation may occur away from the pore due to the combined influence of pore morphology and the presence of defects within regions of stress concentration.
Furthermore, experimental evidence shows that large agglomerations of BaSO4 are subject to microcracking during fatigue, although in the majority of cases, these are not the primary cause of failure.
It is proposed that cracks may then remain contained
within the agglomerations because of the clamping effect
of the matrix during volumetric shrinkage upon curing.
Text
Sinnett-Jones_2009.pdf
- Other
Restricted to Repository staff only
Request a copy
More information
Published date: 15 June 2009
Organisations:
Bioengineering Sciences
Identifiers
Local EPrints ID: 143237
URI: http://eprints.soton.ac.uk/id/eprint/143237
ISSN: 1549-3296
PURE UUID: d381d8e0-11a2-4a1d-87c2-44366668aab7
Catalogue record
Date deposited: 08 Apr 2010 09:06
Last modified: 14 Mar 2024 02:39
Export record
Altmetrics
Contributors
Author:
P. E. Sinnett-Jones
Author:
A. J. Moffat
Author:
J. R. T. Jeffers
Author:
N. Saffari
Author:
J.-Y Buffiere
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics