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Investigation Into Vibration Characteristic in Vibrothermography

  • Yin Li
  • Anbo MingEmail author
  • Ruimin Zhang
  • Wei Zhang
Open Access
Regular
  • 14 Downloads

Abstract

Vibration characteristic plays an important role in vibrothermography, which directly affects the heating during the test. In this work, involving all the contacts in the vibrothermography, the “double-mass-three-spring” model is established to explore the vibration characteristic. The obtained results show that ultrasonic gun vibrates at fundamental frequency (FF), while the specimen vibrates at multi-frequencies including FF, 2FF, 3FF, and 4FF, which is validated through experimental investigation results. Additionally, the model proposed in this work reveals a high order harmonics in the vibrothermography test and makes the specimen conduct the steady vibration, which indicates that the model is closer to the practical equipment and can ensure the heating efficiency induced by vibration of specimen to improve the detection capability.

Keywords

Vibrothermography vibration characteristic “double-mass-three-spring” model 

Notes

Acknowledgement

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51605481, 51575516, and 51505486). The authors would like to thank associate Prof. Zheng-wei YANG with Rocket Force University of Engineering, for THE help in revised manuscript.

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Copyright information

© The Author(s) 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Rocket Force University of EngineeringXi’anChina
  2. 2.High-tech InstituteFan Gong-ting South Street on the 12thQingzhouChina

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