Damage detection in multi-wire cables using guided ultrasonic waves

Schaal, Christoph; Bischoff, Stefan; Gaul, Lothar

doi:10.1177/1475921716642747

Cited by 33 publications

(21 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For generating and receiving guided wave based on magnetostrictive effect, the corresponding section of wire should be magnetized to near saturation. When the wire is subjected to tension, the stress would act as an additional bias magnetic field which leads to an increase in the bias magnetic field according to equation (6). Because the initial value of the bias magnetic field H and the magnetization M can be obtained by experiments, the effective field H e caused by stress can be obtained by equation (7).…”

Section: Effect Of Tensile Force On Coupling Coefficient Ofmentioning

confidence: 99%

“…More seriously, the broken cables would cause the collapse accident of the bridges, such as Kongquehe Bridge in China and Mahakam II Bridge in Indonesia. Recently, the longitudinal mode guided wave technology based on the magnetostrictive effect was employed to inspect the bridge cables which could achieve long-range detection from one point [2][3][4][5][6][7][8]. Guided wave testing using the magnetostrictive sensors includes the wave excitation and reception, based on magnetostrictive effect and its invert effect.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Tensile Force on Magnetostrictive Sensors for Generating and Receiving Longitudinal Mode Guided Waves in Steel Wires

Chen

2019

Journal of Sensors

View full text Add to dashboard Cite

When the longitudinal mode guided waves based on magnetostrictive effect were employed to inspect the bridge cables, we found that there was a large difference in the signal’s amplitude of the same specification cable under different tensile force. This difference would affect the test results and the identification of defects. It is necessary to study the effect of tensile force on the signal for the reliability of detection. Firstly, the effective field theory is employed to take the force as an additional bias magnetic field. Then, the effect of the tensile force on generating and receiving longitudinal mode guided waves based on magnetostrictive effect is obtained by the relationship between the bias magnetic field and the magnetostrictive coupling coefficient. Finally, the experiment of the magnetostrictive sensor is carried out on a Φ5 mm steel wire under different force. The experimental results are in good agreement with the theoretical results. The results show that the existence of the tensile force would change the operation point for generating and receiving the longitudinal mode guided waves based on magnetostrictive effect, which associated with the coupling coefficient. In order to obtain the optimal conversion efficiency for the force state wire and cable, the applied bias magnetic field should be set smaller than the bias magnetic field for the force-free state.

show abstract

Section: Effect Of Tensile Force On Coupling Coefficient Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Tensile Force on Magnetostrictive Sensors for Generating and Receiving Longitudinal Mode Guided Waves in Steel Wires

Chen

2019

Journal of Sensors

View full text Add to dashboard Cite

show abstract

“…Zhou et al [12] have proposed a time-frequency description of a defect by considering an inverse Fourier transform. Schaal et al [13] and Bischoff et al [14] have proposed a hybrid WFE / boundary element method for modeling defect areas in waveguides. Finally, Mencik [11] and Silva et al [15] have proposed reduced models of joints/junctions by using a component mode synthesis technique.…”

Section: Introductionmentioning

confidence: 99%

A wave-based optimization approach of curved joints for improved defect detection in waveguide assemblies

Denis

Mencik

2020

Journal of Sound and Vibration

View full text Add to dashboard Cite

A wave-based numerical approach is proposed for the detection of defects in waveguide assemblies with curved joints. Within this framework, the wave finite element (WFE) method is used. It provides an efficient numerical means for computing waves in one-dimensional periodic structures (waveguides), and assessing the reflection and transmission coefficients of waves around defects and curved joints. A so-called apparent reflection matrix of the defects, which takes into account the influence of the joints on the reflected signals recorded at some measurement point at the beginning of a waveguide assembly, is proposed. This appears to be the relevant criterion for detecting defects. As it turns out, an optimization procedure for the design of curved joints can be proposed to magnify the amplitude of the reflected signals issued from defects. Numerical experiments are carried out on 2D waveguide assemblies, with one or two curved joints which are parameterized with respect to their radius and angle of curvature. Optimized values of these parameters can be found which magnify the reflected signals issued from several kinds of defects. Time response simulations are finally undertaken

show abstract

“…Ultrasonic guided wave (UGW)-based nondestructive testing (NDT) techniques are increasingly being used to inspect various multi-wire cables given their high sensitivity, long-range inspection, and full cross-sectional coverage properties. Many studies [8][9][10][11][12][13][14][15][16][17][18] related to guided wave dispersion properties, propagation characterization, signal processing methods, and wire breakage detection in multi-wire cables have been reported.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation of Guided Wave Propagation in a Multi-Wire Cable

Zhang

Tang

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

Ultrasonic guided waves (UGWs) have attracted attention in the nondestructive testing and structural health monitoring (SHM) of multi-wire cables. They offer such advantages as a single measurement, wide coverage of the acoustic field, and long-range propagation ability. However, the mechanical coupling of multi-wire structures complicates the propagation behaviors of guided waves and signal interpretation. In this paper, UGW propagation in these waveguides is investigated theoretically, numerically, and experimentally from the perspective of dispersion and wave structure, contact acoustic nonlinearity (CAN), and wave energy transfer. Although the performance of all possible propagating wave modes in a multi-wire cable at different frequencies could be obtained by dispersion analysis, it is ineffective to analyze the frequency behaviors of the wave signals of a certain mode, which could be analyzed using the CAN effect. The CAN phenomenon of two mechanically coupled wires in contact was observed, which was demonstrated by numerical guided wave simulation and experiments. Additionally, the measured guided wave energy of wires located in different layers of an aluminum conductor steel-reinforced cable accords with the theoretical prediction. The model of wave energy distribution in different layers of a cable also could be used to optimize the excitation power of transducers and determine the effective monitoring range of SHM.

show abstract

Damage detection in multi-wire cables using guided ultrasonic waves

Cited by 33 publications

References 22 publications

Effect of Tensile Force on Magnetostrictive Sensors for Generating and Receiving Longitudinal Mode Guided Waves in Steel Wires

Effect of Tensile Force on Magnetostrictive Sensors for Generating and Receiving Longitudinal Mode Guided Waves in Steel Wires

A wave-based optimization approach of curved joints for improved defect detection in waveguide assemblies

Numerical and Experimental Investigation of Guided Wave Propagation in a Multi-Wire Cable

Contact Info

Product

Resources

About