Abstract
This paper presents the evaluation of strength distribution and fatigue behavior of polycrystalline silicon specimens with two different shapes of notches under monotonically increasing and cyclic loading. Static strength distribution was described by Weibull distribution with the two material parameters m and σ_0. The fatigue crack extension process determining fatigue lifetime was formulated by the well-known Paris law with two unknown parameters n and C. These were fit to the results of the tensile static and fatigue tests. It was found that the parameters were independent of the shapes of specimens under the same environment.
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