Non-Destructive Detection of Anchor Defects Using Ultrasonic Guided Wave and ICEEMDAN Method
Liu Leilei
Zhu Jun
Zhang Shaohe
Sun Pinghe
Abstract：In order to quantitatively detect the internal defects of anchor,it is proposed to use the finite element method to simulate the propagation process of the ultrasonic guided wave in the defective anchor,and to use the improved adaptive noise complete ensemble empirical mode decomposition(ICEEMDAN)method to process the ultrasonic guided wave reflection signal.Then,according to the peak value in the decomposed intrinsic mode function(IMF),the arrival time of the defect reflection wave is obtained,based on which the position and length of the anchorage defects are evaluated.A series of parameter analyses show that the defect location deduced based on the proposed method is in good agreement with the actual situation,and the calculation error of single defect length is within 3.3％,and the calculation error of multiple defect length is less than 10％.Hence,the ultrasonic guided wave method based on ICEEMDAN can be used as an effective means to detect the internal defects of the bolt.
Keywords：anchorage defectICEEMDANultrasonic guided wavenumerical simulationnon-destructive testinghazardsengineering geology
Publication Date：2025-09-30
Online Publishing Date：2025-10-15(First online date of this platform, not the publication date of the document)
Pages：13( 3691-3703 )