Torsional fretting wear behaviour of nature articular cartilage in vitro
by Zhen-bing Cai; Shan-shan Gao; Xue-qi Gan; Hai-yang Yu; Min-hao Zhu
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 5, No. 5/6, 2011

Abstract: Torsional wear tests of bovine hip joint articular cartilage against Al2O3 femoral heads with a diameter of 28 mm were carried out on a new torsional fretting wear apparatus. The damage characteristics of articular cartilage were discussed in detail based on an analysis of frictional kinetics behaviors, SEM observations, and hematoxylin-eosin staining. The results indicated that the behaviors of torsional wear were strongly dependent on angular displacement amplitudes and the number of cycles, which can be characterized by the curves of friction torque/angular displacement (T-). Three kinds of T- curves (i.e., linear, parallelogram, and elliptical curves) were observed during the process of torsional fretting wear and during the use of articular cartilage while running in partial slip and gross slip conditions. Along the radial direction, the wear scar could be divided into three parts, namely, the central sticking zone, the radial ridges and micro-crazes zone, and the detachment zone. With an increase in angular displacement amplitude, the netlike shape ridge can be observed along the radial direction from the contact center. The wear mechanisms of the cartilage was mainly similar to fatigue wear or similar to the mechanism of delamination in metal materials.

Online publication date: Tue, 14-Oct-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email