Application of scanning laser Doppler vibrometer in high temperature modal test

Fu Chuan Wang; Ping Zhang; Mu Xiao Li

doi:10.1117/12.3025058

28 March 2024 Application of scanning laser Doppler vibrometer in high temperature modal test

Fu Chuan Wang, Ping Zhang, Mu Xiao Li

Proceedings Volume 13091, Fifteenth International Conference on Signal Processing Systems (ICSPS 2023); 130912L (2024) https://doi.org/10.1117/12.3025058
Event: Fifteenth International Conference on Signal Processing Systems (ICSPS 2023), 2023, Xi’an, China

Abstract

In the process of hypersonic flight in the dense atmosphere, the loading environment of the vehicle is extremely harsh. The air at the front end is severely compressed and fricts with the windward side, resulting in a sharp rise in the surface temperature of the aircraft. With the increase of the flight Mach number, the phenomenon of aerodynamic heating becomes more and more serious. Therefore, the influence of high temperature must be considered in the ground modal test of the aircraft structure. However, the measurement of vibration response signal in high temperature environment has become a big problem. This paper introduces a non-contact vibration signal test method, which is applied to the modal test of carbon fiber resin matrix composites in high temperature environment. The modal parameters of composite materials in different temperature environments are obtained successfully, and good results are achieved.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fu Chuan Wang, Ping Zhang, and Mu Xiao Li "Application of scanning laser Doppler vibrometer in high temperature modal test", Proc. SPIE 13091, Fifteenth International Conference on Signal Processing Systems (ICSPS 2023), 130912L (28 March 2024); https://doi.org/10.1117/12.3025058

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