Propagation characteristics of ultrasonic guided waves in bolts embedded in soil

Yaxin Sun; Cunfu He; Bin Wu; Xiuyan Wang; Zenghua Liu

doi:10.1117/12.716551

13 October 2006 Propagation characteristics of ultrasonic guided waves in bolts embedded in soil

Yaxin Sun, Cunfu He, Bin Wu, Xiuyan Wang, Zenghua Liu

Proceedings Volume 6280, Third International Symposium on Precision Mechanical Measurements; 62802L (2006) https://doi.org/10.1117/12.716551
Event: Third International Symposium on Precision Mechanical Measurements, 2006, Urumqi, China

Abstract

The treatment of a bolt embedded in soil is simplified to the model of a rod embedded in an infinite medium. The dispersion curves of the model are calculated. Propagation characteristics of longitudinal modes in a free bolt and a bolt embedded in soil are studied. The longitudinal mode L(0,1) in a bolt embedded in soil in the frequency range from 40kHz to 90kHz the displacement of the profile is simple, which makes it easy to be excited. Its attenuation is the smallest in all modes, and its energy velocity is the fastest. This indicates that the longitudinal mode L(0,1) can be used for the inspection of a bolt embedded in soil. At the same time, the experiments on a 2 m long bolt embedded in soil, inspected by using ultrasonic guided wave have been carried out. The results of the experiment show, that the longitudinal mode L(0,1) in the frequency range from 40kHz to 90kHz is suitable for the inspection of a bolt embedded in soil.

Citation Download Citation

Yaxin Sun, Cunfu He, Bin Wu, Xiuyan Wang, and Zenghua Liu "Propagation characteristics of ultrasonic guided waves in bolts embedded in soil", Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62802L (13 October 2006); https://doi.org/10.1117/12.716551

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