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. 2022 Mar 30;144(9):091007. doi: 10.1115/1.4054108

Fig. 3.

Mechanical confined creep test system for applying static and cyclic compressive loads: (a) osteochondral specimens are held in a confining chamber and the articular surface of the cartilage is loaded with a rigid porous platen and (b) the articular cartilage surface was loaded with a static (0.707 kg) or cyclic (1.0 kg at 1 Hz) load for 300 s (equivalent stresses of 88 kPa and 125 kPa, respectively), superimposed on a small constant tare load (∼1% of applied load). Shown are the static and cyclic applied stress waveforms (online version, red and blue, respectively) for one specimen (#28-05); static = 87.8±2.8 kPa and cyclic = 119.5±19.5 kPa (mean ± standard deviation).

Mechanical confined creep test system for applying static and cyclic compressive loads: (a) osteochondral specimens are held in a confining chamber and the articular surface of the cartilage is loaded with a rigid porous platen and (b) the articular cartilage surface was loaded with a static (0.707 kg) or cyclic (1.0 kg at 1 Hz) load for 300 s (equivalent stresses of 88 kPa and 125 kPa, respectively), superimposed on a small constant tare load (∼1% of applied load). Shown are the static and cyclic applied stress waveforms (online version, red and blue, respectively) for one specimen (#28-05); static = 87.8±2.8 kPa and cyclic = 119.5±19.5 kPa (mean ± standard deviation).