Spatial propagation characteristics of acoustic emission signals in parallel steel wire cables

Li, Shengli; Feng, Jie; Liu, Zhenwen; Xu, Bin; Wu, Guangming

doi:10.1016/j.measurement.2024.114138

Cited by 4 publications

(1 citation statement)

References 36 publications

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“…Li et al [17] used the guide rod mounting sensor to monitor and locate the broken wire of the parallel steel wire bundle, and obtained the broken wire signal. However, due to the unilateral installation, the positioning result error is large; in the subsequent research [18], the transverse and longitudinal spatial propagation characteristics of AE signals in parallel steel wires were understood by finite element method and attenuation experiment, which provided a basis for accurate damage location. Qu et al [19] used the multiband wavelet analysis method to realize the identification and location of the broken wire signal of a single prestressed steel strand, but this method is still difficult to apply in practical engineering, because it is usually composed of multiple prestressed steel strands.…”

Section: Introductionmentioning

confidence: 99%

Evaluating damage progress in prestressed anchor cables with artificial defects using acoustic emission technology

Zhang,

Su,

Zeng

et al. 2024

Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVIII

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For the purpose of lightweight and long span, the structural solution using cable is proposed, especially for the bridges and roofs design. Herein, one of the key members is the anchor cable, which plays decisive role in the cable structure. But the prestressed anchor cable is vulnerable to corrosion and fatigue damage due to various environmental activities. Failure due to accumulative defects or broken wires is inevitable, which seriously effects on the status of the cable-structure system. Therefore, it is essential to propose an efficient method which can realize the real-time evaluation and monitoring of the health status of the prestressed anchor cable. In this paper, the acoustic emission (AE) technique was proposed to quantify the damage progress in the prestressed anchor cable. In order to verify the proposed AE-based method, three prestressed anchor cables with different prescribed defects were tested to failure under the fatigue tensile. Different depths of scratches were preset at different positions of the steel wires in the cables. Aiming to the bundle of the anchor cable, the conventional 1-D AE localization and zonal localization method were combined to localize the micro-crack and rupture of cable. The relationship between AE signal signature and damage was established. The acoustic emission signatures were identified and characterized: (i) friction between cables; (ii) plastic deformation of cable; (iii) rupture. With the localization of AE and typical AE signature, the failure progress can be described. The massive AE signals of plastic deformation can provide the precursor of the cable rupture. AE shows good potential for predicting the healthy status of the prestressed anchor cable.

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Section: Introductionmentioning

confidence: 99%