Development of micro-scale tensile fatigue test system

We developed a micro-scale tensile fatigue test system, which can test specimens fabricated from bulk materials. In this system, a probe is attached to a micro-manipulator and the micro-manipulator enables accurate initial positioning and applying tensile stress. In this paper, we present the system and the result of tensile tests and tensile fatigue tests on the specimens which are made of coarse-grained magnesium alloy, AZ31. The tensile tests suggests that the system can apply accurate tensile stress to the micro-scale specimens and the tensile strength of micro-scale structures is much stronger than that of bulk materials. And the tensile fatigue test indicates that the system can apply intended cyclic tensile stress.