The University of Southampton
University of Southampton Institutional Repository

Acoustic emission monitoring and 3-D visualisation of polymerisation induced damage of acrylic polymer materials.

Acoustic emission monitoring and 3-D visualisation of polymerisation induced damage of acrylic polymer materials.
Acoustic emission monitoring and 3-D visualisation of polymerisation induced damage of acrylic polymer materials.
To improve the longevity of total hip replacements, techniques such as vacuum mixing have been developed to reduce the amount of porosity within the cement. However, data from the Swedish hip registry has demonstrated an increased risk of revision for vacuum-mixed cemented devices in the first 5 years postoperatively. Theoretical and experimental evidence suggests that stresses induced by cement shrinkage during polymerization alone are sufficient to induce cracking. However, very little evidence of preload cracking is available due to the limitations of current inspection methods. The present work combines two forms of nondestructive evaluation technique to assess the state of an acrylic-based polymer mantle both in real time during polymerization using the acoustic emission (AE) technique and immediately post polymerization using micro-computed tomography (CT). AE data enabled the location, type, and chronology of events to be obtained. The use of micro-CT in combination with a radiopaque dye-penetrant was shown to be an effective method for highlighting preload polymerization cracking and verified the findings of the AE data. The AE data indicated that the first signs of damage occurred 3-6 min after the peak temperature obtained during exotherm, confirming that thermal contraction rather than pure volumetric shrinkage is the dominant factor in preload damage initiation. The methodology developed in this study enables detailed information on the condition of a cement mantle to be obtained without the need for serial sectioning.
1552-4981
223-228
Mavrogordato, M.
f3e0879b-118a-463a-a130-1c890e9ab547
Taylor, M.
e368bda3-6ca5-4178-80e9-41a689badeeb
Taylor, A.
39974814-4868-4c73-a3fa-2adfa4be3e46
Browne, M.
6578cc37-7bd6-43b9-ae5c-77ccb7726397
Mavrogordato, M.
f3e0879b-118a-463a-a130-1c890e9ab547
Taylor, M.
e368bda3-6ca5-4178-80e9-41a689badeeb
Taylor, A.
39974814-4868-4c73-a3fa-2adfa4be3e46
Browne, M.
6578cc37-7bd6-43b9-ae5c-77ccb7726397

Mavrogordato, M., Taylor, M., Taylor, A. and Browne, M. (2009) Acoustic emission monitoring and 3-D visualisation of polymerisation induced damage of acrylic polymer materials. Journal of Biomedical Materials Research Part B: Applied Biomaterials, 90B (1), 223-228. (doi:10.1002/jbm.b.31276).

Record type: Article

Abstract

To improve the longevity of total hip replacements, techniques such as vacuum mixing have been developed to reduce the amount of porosity within the cement. However, data from the Swedish hip registry has demonstrated an increased risk of revision for vacuum-mixed cemented devices in the first 5 years postoperatively. Theoretical and experimental evidence suggests that stresses induced by cement shrinkage during polymerization alone are sufficient to induce cracking. However, very little evidence of preload cracking is available due to the limitations of current inspection methods. The present work combines two forms of nondestructive evaluation technique to assess the state of an acrylic-based polymer mantle both in real time during polymerization using the acoustic emission (AE) technique and immediately post polymerization using micro-computed tomography (CT). AE data enabled the location, type, and chronology of events to be obtained. The use of micro-CT in combination with a radiopaque dye-penetrant was shown to be an effective method for highlighting preload polymerization cracking and verified the findings of the AE data. The AE data indicated that the first signs of damage occurred 3-6 min after the peak temperature obtained during exotherm, confirming that thermal contraction rather than pure volumetric shrinkage is the dominant factor in preload damage initiation. The methodology developed in this study enables detailed information on the condition of a cement mantle to be obtained without the need for serial sectioning.

Full text not available from this repository.

More information

Published date: 2009

Identifiers

Local EPrints ID: 71604
URI: https://eprints.soton.ac.uk/id/eprint/71604
ISSN: 1552-4981
PURE UUID: 4cf303b9-3a45-4f5b-90e2-45fab4642059
ORCID for M. Browne: ORCID iD orcid.org/0000-0001-5184-050X

Catalogue record

Date deposited: 16 Dec 2009
Last modified: 06 Jun 2018 13:03

Export record

Altmetrics

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

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×