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Comparison of Two Methods of Fatigue Testing Bone Cement.

Tanner, K E; Wang, Jian-Sheng LU ; Kjellson, Fred LU and Lidgren, Lars LU (2010) In Acta Biomaterialia 6(3). p.943-952
Abstract
Two different methods have been used to fatigue test four bone cements. Each method has been used previously, but the results have not been compared. The ISO 527 based method tests a minimum of 10 samples over a single stress range in tension only and uses Weibull analysis to calculate the median number of cycles to failure and the Weibull modulus. The ASTM F2118 test regime uses fewer specimens at various stress levels tested in fully reversed tension-compression, and generates a stress versus number of cycles to failure (S-N) or Wöhler curve. Data from specimens with pores greater than 1mm across is rejected. The ISO 527 based test is quicker to perform however provides only tensile fatigue data, but the material tested includes pores,... (More)
Two different methods have been used to fatigue test four bone cements. Each method has been used previously, but the results have not been compared. The ISO 527 based method tests a minimum of 10 samples over a single stress range in tension only and uses Weibull analysis to calculate the median number of cycles to failure and the Weibull modulus. The ASTM F2118 test regime uses fewer specimens at various stress levels tested in fully reversed tension-compression, and generates a stress versus number of cycles to failure (S-N) or Wöhler curve. Data from specimens with pores greater than 1mm across is rejected. The ISO 527 based test is quicker to perform however provides only tensile fatigue data, but the material tested includes pores, thus the cement is closer to cement in clinical application. The ASTM regime uses tension and compression loading and multiple stress levels, thus is closer to physiological loading, but excludes specimens with defects greater than 1mm, so is less representative of cement in vivo. The fatigue lives between the cements were up to a factor 15 different for the single stress level tension only tests, while they were only a factor of 2 different in the fully reversed tension-compression testing. The ISO 527 based results are more sensitive to surface flaws, thus the differences found using ASTM F2118 are more indicative of differences in the fatigue lives. However, ISO 527 based tests are quicker, so are useful for initial screening. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Biomaterialia
volume
6
issue
3
pages
943 - 952
publisher
Elsevier
external identifiers
  • wos:000274943500026
  • pmid:19766742
  • scopus:75149149778
ISSN
1878-7568
DOI
10.1016/j.actbio.2009.09.009
language
English
LU publication?
yes
id
209798a6-1b99-4b85-be76-e0c278f7b4af (old id 1483312)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19766742?dopt=Abstract
date added to LUP
2009-10-07 12:33:03
date last changed
2018-05-29 09:45:26
@article{209798a6-1b99-4b85-be76-e0c278f7b4af,
  abstract     = {Two different methods have been used to fatigue test four bone cements. Each method has been used previously, but the results have not been compared. The ISO 527 based method tests a minimum of 10 samples over a single stress range in tension only and uses Weibull analysis to calculate the median number of cycles to failure and the Weibull modulus. The ASTM F2118 test regime uses fewer specimens at various stress levels tested in fully reversed tension-compression, and generates a stress versus number of cycles to failure (S-N) or Wöhler curve. Data from specimens with pores greater than 1mm across is rejected. The ISO 527 based test is quicker to perform however provides only tensile fatigue data, but the material tested includes pores, thus the cement is closer to cement in clinical application. The ASTM regime uses tension and compression loading and multiple stress levels, thus is closer to physiological loading, but excludes specimens with defects greater than 1mm, so is less representative of cement in vivo. The fatigue lives between the cements were up to a factor 15 different for the single stress level tension only tests, while they were only a factor of 2 different in the fully reversed tension-compression testing. The ISO 527 based results are more sensitive to surface flaws, thus the differences found using ASTM F2118 are more indicative of differences in the fatigue lives. However, ISO 527 based tests are quicker, so are useful for initial screening.},
  author       = {Tanner, K E and Wang, Jian-Sheng and Kjellson, Fred and Lidgren, Lars},
  issn         = {1878-7568},
  language     = {eng},
  number       = {3},
  pages        = {943--952},
  publisher    = {Elsevier},
  series       = {Acta Biomaterialia},
  title        = {Comparison of Two Methods of Fatigue Testing Bone Cement.},
  url          = {http://dx.doi.org/10.1016/j.actbio.2009.09.009},
  volume       = {6},
  year         = {2010},
}