T0101-1-5 極薄板材の疲労特性に及ぼす試験片板厚の影響([T0101-1]マイクロ・ナノ材料システムの力学と強度・機能評価(1):ナノインプリント・シートの力学特性評価)

概要

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Recently, because the micro-machine is noticed and electronic equipments are made much lighter and smaller, the demand for micro materials is increasing. However the mechanical properties data of the micro materials obviously run short. Therefore, the establishment of the test method for the micro materials is very necessary. In this study, Cu thin sheets with thicknesses of 10μm and 20μm were used. Specimens were manufactured using electro-spark machining. Afterwards, the machined surface was polished. The fatigue tests were carried out using these specimens. As the results, fatigue lives of specimen with thickness of 10μm were shorter than those with thickness of 20μm in high stress amplitude area. The dispersion in the fatigue life of specimen with thickness of 10μm and 20μm were almost equal.
2010-09-04