Abstract
Self-loosening of threaded fasteners sometimes occurs under dynamic loads such as vibration and shock. For mechanical structures, the self-loosening with returning rotation of screw thread under transversely repeated load is particularly important. Although many parts preventing the loosening of bolt-nut joint are being evaluated the locking performance of self-loosening, there are unclear points about the locking performance of the adhesive. In this paper, using bolts which coating the anaerobic adhesive on the threaded surface, we have examined self-loosening behavior under transverse cyclic loading. As the result, it was confirmed that the loosening behavior of bolts coating adhesive is different from the normal bolt under transverse cyclic loading with slip of the bearing surface of nut. And we found that the bolts coating adhesive on the threaded surface occur a slight returning rotation of nut under small transverse vibration.
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