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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (3): 424459-424459.doi: 10.7527/S1000-6893.2020.24459

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Force sensor for axial force and shear force of bolts in joints

WANG Houbing, WEI Jingchao, CHENG Li'nan, LI Xinxiang, ZHAO Rong   

  1. Aeronautics Science Technology Key Laboratory of Full Scale Aircraft Structure Static and Fatigue, Aircraft Strength Research Institute of China, Xi'an 710065, China
  • Received:2020-06-24 Revised:2020-08-18 Published:2020-09-04
  • Supported by:
    Civil Aircraft Scientific Research Project (MJ-2015-F-038)

Abstract: Based on a brief survey of the measurement methods for the axial force of bolts in joints and the shear force of bolts in composite multi-bolt joints, a force sensor for simultaneously measuring both the axial force and shear force of bolts in joints is presented to overcome the shortcoming of the existing test methods that only one of the forces could be measured at a time. Two test setups for the axial force and the shear force are designed for the force sensor, and two experiments conducted for the two forces. The linearity and repeatability of the load-strain curves from the test results of the force sensor are experimentally investigated. The test outcomes show that the presented force sensor satisfies the technical requirements for measuring the axial force and shear force of bolts in engineering, further verifying the suitability of the proposed force sensor. The installation angle of the force sensor has no effect on the measurement results of the axial force and shear force. The bolt tightening torques are found to significantly influence the measurement results, whereas the effects weaken slowly when the external load increases.

Key words: bolted joints, axial force, shear force, force sensors, test measurement

CLC Number: