Abstract
Some electrical appliance such as mobile phone has been miniaturized recently to be wearable while the size of electrical device worked into those appliances has been smaller and thinner remarkably. However the current device design has been done based upon bulk material data. In order to satisfy those technical requests, some testing device for measuring the mechanical property of very small material has been developed. Those devices become large size in spite of very small-size specimen in order to control precisely a testing wave form. To achieve more compact testing device, bending and bulge tests have been also proposed, although it is very complicated to assess directly stress-strain curve. The othre trial has been focused on advanced actuator system, piezo-electric actuator, instead of an electromechanical actuator. However, the origin of the problem on development of advanced testing system with more compact size has not been settled yet. In this paper, we report the desirable testing system which was achieved by involving some following idea: uniting of an actuator, a load cell and the testing part into device structure, and adopting shape memory wire as new actuator. In the design, fusion with analytical equipment is aimed to be able to grasp a damage evolution.
