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Strain-controlled fatigue of acrylic bone cement

✍ Scribed by Carter, Dennis R. ;Gates, Evalyn I. ;Harris, William H.

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
937 KB
Volume
16
Category
Article
ISSN
0021-9304

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✦ Synopsis

Abstract

Monotonic tensile tests and tension–compression fatigue tests were conducted of wet acrylic bone cement specimens at 37Β°C. All testing was conducted in strain control at a strain rate of 0.02/s. Weibull analysis of the tensile tests indicated that monotonic fracture was governed more strongly by strain than stress. The number of cycles to fatigue failure was also more strongly controlled by strain amplitude than stress amplitude. Specimen porosity distribution played a major role in determining the tensile and fatigue strengths. The degree of data scatter suggests that Weibull analysis of fatigue data may be useful in developing design criteria for the surgical use of bone cement.

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