@inproceedings{fced89237fae407f845faf72090b6584,
title = "The nondestructive evaluation of axial stress of a bolt in situ by combination of shear and longitudinal wave",
abstract = "This paper provides a non-destructive way to evaluate axial stress in a tightened bolt which are made of austenitic stainless steel (A2-70), low-carbon steel(4.8) and carbon steel(8.8) by the combination of shear wave and longitudinal wave. By using finite element analysis, a more precise model to deduce axial stress in a tightened bolt based on the contributions of former researchers has been established. This model has also been verified by strain gauge testing. According to the Acoustoelasticity theory, ultrasonic wave propagation in the metal transit time associated with the stress state. Whether shear wave or longitudinal wave cannot detect axial stress of bolt which is tightened or fixed in the structure separately. Only through the division of transit time of shear wave and longitudinal wave, the influence of the length of bolt could be eliminated. Meanwhile, formulas also been provided. An ultrasonic transducer (2.25MHz) has been used to stimulating the two different waveforms. Besides the formulas which have been issued, a comparison with field measurement to tensile testing also has been given and a more convincing result has been provided.",
keywords = "Acoustoelasticity, Bolt axial stress, Finite element analysis, Shear wave and longitudinal wave, Ultrasonic stress measurement",
author = "Xiao Li and Qinxue Pan and Chunguang Xu and Wentao Song",
year = "2013",
language = "English",
series = "12th International Conference of the Slovenian Society for Non-Destructive Testing: Application of Contemporary Non-Destructive Testing in Engineering, ICNDT 2013 - Conference Proceedings",
publisher = "Slovenian Society for Non-Destructive Testing",
pages = "161--170",
editor = "Tomaz Kek and Janez Grum",
booktitle = "12th International Conference of the Slovenian Society for Non-Destructive Testing",
note = "12th International Conference of the Slovenian Society for Non-Destructive Testing: Application of Contemporary Non-Destructive Testing in Engineering, ICNDT 2013 ; Conference date: 04-09-2013 Through 06-09-2013",
}