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A Study of Experimental Performance of Torque-Shear Nut for Field Applications

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Abstract:

This study presents an experimental comparison study of a newly developed Torque-shear Nut (TSN) under transverse cyclic loading for field application. For comparison, conventional high-strength bolt (HT) and Torque-shear bolt (TSB) were used to examine Loosening Speed, Stabilization cycle and residual clamping force. In this study, customized load cells were adopted to measure real-time axial forces. Two types of bolt size M16 and M20 were tested under four different displacements range of 0.5, 1.0, 1.5 and 2.0mm. Test results showed that the residual clamping force ratio of TSN ranged from 75% to 99% after 1000 cyclic loads, the loosening rate increased with greater displacement amplitude leading to a lower final residual clamping force ratio, and the stabilization cycle ranged from 32 to 306 cycles. These results showed values very similar to those of HT and TSB.

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Periodical:

Advances in Science and Technology (Volume 175)

Pages:

135-140

DOI:

https://doi.org/10.4028/p-Hp3Vle

Citation:

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Online since:

May 2026

Authors:

Minwoo Choi*, Yubin Kim, Yeol Choi

Keywords:

Bolt Loosening, High-Tension Bolt, Residual Preload, Transverse Cyclic Loading, TS Nut

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Сopyright:

© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

References

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