The clamping of torque shear high strength bolt is induced when the pin-tail is broken. However the tension forces induced shank of the bolt do not be known by now. This study focused to develop a quantitative method to identify the induced tension by analyzing the electric energy of which electric torque wrench was applied to high strength bolt at the break of pin tail. Based on this co-relation between tension and accumulated current, the regressive analysis was derived. The error rate between tension and accumulated current was 2.24%.

ABSTRACT
 1. 서 론
 2. 전동식 토크렌치를 이용한 축력 예측
 3. 실험 계획 및 분석
  3.1 실험계획
  3.2 결과분석
 4. 결론
 References

• 나환선(한국전력공사) | Nah Hwan-Seon
• 정훈(한국전력공사) | Jung Hoon