517 放射光を利用したアルミニウム合金のき裂進展挙動調査(OS9-3 光計測法,OS9 実験力学における新たな試み)

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  • 517 Investigation of Fatigue Crack Behavior with Synchrotron Radiation on Aluminum Alloy

説明

The authors have performed micro computed tomography(μCT) with synchrotron radiation of SPring-8 to evaluate the fatigue crack propagation behavior inside specimens. A compact biaxial rotating bending fatigue testing machine was developed to make fatigue testing in SPring-8. Preparatory experiments demonstrated that the resulting data by the machine developed were consistent with the data by conventional Ono-type rotating bending fatigue testing machines. Fatigue crack propagation curves and da/dN-ΔK relation obtained by μCT corresponded to the data with replication technique on the surface of the specimens, however, it was also shown that the replication technique would not always present relevant information on the crack behavior.

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