Design, Manufacturing and Testing of a Bone Shaft Fatigue Machine

Year 2019, Volume: 23 Issue: 4, 657 - 662, 01.08.2019

Ahmet Çağatay Çilingir

https://doi.org/10.16984/saufenbilder.516631

Abstract

To determine the mechanical properties of materials subjected to repetitive
loading, fatigue testing is a well–established method in engineering studies.
It is believed that the cause of stress fractures in cortical bone are due to
the repetitive loading. There is currently no cost–effective device that
accounts for the variety of factors influencing the fatigue behaviour of bone in
vivo. The Bone Shaft Fatigue Machine is proposed as a possible solution and
designed as a rotating bending fatigue tester with a constant stress amplitude.
Sheep metatarsal bone shaft specimens designed and machined for fatigue tests. The
results were determined to be in accordance with the expected fatigue stresses
and cycles reported in current literature. The Bone Shaft Fatigue Machine was
also found to be cost-effective and applicable to the testing of materials in
research areas other than the study of cortical bone.

Keywords

bone, fatigue

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