Abstract
Recently, because the micro-machine is noticed and electronic equipments are made much lighter and smaller, the demand for micro materials is increasing. The researches for elucidating the mechanical properties of micro materials have been carried out. However the mechanical properties data of the micro materials obviously run short and the evaluation method of micro materials is different according to the researcher. Therefore, the establishment of the test method for the micro materials is very necessary. In this study, Cu thin sheet which thickness is 20μm was used. Specimens of the two kinds width, the two kinds of gauge length and the two kinds of angle between rolling direction and loading axis were manufactured using electro-spark machining. Afterwards, the machined surface was polished. The tensile strength tests were carried out using these specimens. As the results, it was found that the size and shape of specimen have effect on Young's modulus and tensile strength a little.
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