3235 増締め用トルクレンチを用いたボルト締結体の締付け力検出レンチの開発(J07-2 締結・接合の力学とプロセス(2),J07 締結・接合の力学とプロセス)

概要

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The loss of clamping force of a bolted joint in service causes fatigue failure. Hence the clamping force has to be accurately measured during maintenance. In our previous study, a method to easily measure clamping force was developed. This method can measure clamping force with an error margin of less than±10%. In this study, a wrench which can measure the clamping force of a bolted joint using a commercial torque wrench has been developed based on the proposed method. The clamping force of a pre-tightened bolted joint was experimentally measured using the developed wrench. Results showed that the wrench could measure the clamping force with an error margin of approximately±10%.
2006-09-15