Reliability Evaluation of Bolt Fastening Force Based on Ultrasonic Measurement Method

Bolts are important fasteners indispensable in the manufacturing industry and are widely used in national defense industry and important facilities such as aerospace, vehicle, ship, railway, and bridge. The precise control and verification of bolt fastening force is closely related to the safety and...

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Published in2019 IEEE International Conference on Mechatronics and Automation (ICMA) pp. 2212 - 2217
Main Authors Pan, Qinxue, Pan, Ruipeng, Chang, Meile, Shao, Chang, Liu, Xiaohao, Xu, Xiaoyu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2019
Subjects
Automation
Bolt
Calculus method
Conferences
Fastening force
Influencing factors
Mechatronics
Ultrasonic waves
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Summary:Bolts are important fasteners indispensable in the manufacturing industry and are widely used in national defense industry and important facilities such as aerospace, vehicle, ship, railway, and bridge. The precise control and verification of bolt fastening force is closely related to the safety and reliability of the bolt-assembled equipment and structures. Although there are many conventional methods for controlling the fastening force applied to a bolt, poor control accuracy and low detection efficiency remain issues in evaluating the safety of bolted assemblies. Additionally, these conventional methods all have limited application to the detection of changes in the residual fastening force in in-serve bolts. As a nondestructive testing technology, ultrasonic measurement can be applied to successfully address these issues. To help researchers understand the theoretical basis and technological development in this field and equip them to conduct further in-depth research, the theoretical models of the ultrasonic fastening force measurement proposed domestically and abroad in recent years are reviewed. Then, two main influencing factors, temperature and effective stressed length, are analyzed and proposed methods of calibration and compensation are reviewed. Finally, aiming at the issue that the axial stress inside the bolt is not uniformly distributed within the effective stressed length, some newly proposed theories and methods are discussed.
ISBN:1728116988
9781728116983
ISSN:2152-744X
DOI:10.1109/ICMA.2019.8816545