Experimental study of the behaviour of baphasic materials

Teng, Kuan Hui (2013) Experimental study of the behaviour of baphasic materials. Project Report. UTeM, Melaka. (Submitted)

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Abstract

Osteoarthritis (OA) is the most common joint disease and symptomatic health problem for middle aged and senior citizen group which frequently occurs at the hands, knees, hips and spine. It was characterised by joint pain and dysfunction, and in its advanced stages, joint contractures, muscles atrophy and limb deformity spine. OA results from degeneration of a synovial joint which generally progressive loss of articular cartilage in many instances the formation of subchondral bone cysts and marginal osteophytes. In previous experimental studies, the cartilage has been assumed to be flat. However, the actual cartilage surface in human synovial joint possesses curvature and this could contribute to inaccuracy of characterised properties. Hence, this project is aims to study and investigate the biomechanical behavior of flat and curved surfaces of biphasic material by perform creep indentation test. Three different types of sponge were taken as model to replace the actual articular cartilage since it were also biphasic material. The creep indentation test was performed because it was much easier to set up compared to confined compression test and unconfined compression test. The relationship between dry to wet ratio of different types of sponge and the displacement and effect of different size of curved surface to the replacement were studied through this project.

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