3424 Fatigue Properties of Super Lock Bolt

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  • 3424 二重ねじボルトの疲労特性に関する研究(G03-2 疲労,G03 材料力学)

Abstract

The adequately fastened screw thread usually shows remarkable high fatigue strength. However, if loosening arise in the screw in the screw thread, all of the external force are directly to the bolt it self and the bolt will be broken catastrophically. The super lock bolt had been developed against such kind of loosening. The object of this study is to investigate the fatigue strength of the above super lock bolt under the different kind of fastening conditions and processing method. In all the test pieces, fatigue strength is improving rather than the common steel bolt.

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