Assessment of accumulated damage in circular tubes using nonlinear circumferential guided wave approach: A feasibility study

Deng, Mingxi; Gao, Guangjian; Xiang, Yanxun; Li, Mingliang

doi:10.1016/j.ultras.2016.12.001

Cited by 22 publications

(26 citation statements)

References 38 publications

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“…Furthermore, studies using torsional waves to detect cubic material nonlinearity in a pipe have shown linearly increasing cumulative harmonic as the wave propagation distance increased [22]. Apart from using waves that propagate axially in cylinders, experiments with nonlinear circumferential guided waves have also been carried out to validate the severity evaluation of accumulated damage in tubes using the second harmonic generation method [23].…”

Section: Introductionmentioning

confidence: 99%

Quantitative fatigue crack evaluation in pipeline structures using nonlinear cylindrical waves

Guan

Wang

et al. 2018

Smart Mater. Struct.

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This study comprehensively investigated the interaction between fatigue crack propagation and cylindrical guided waves which were excited and collected by surface-mounted piezoelectric elements on an aluminium pipe to identify the wave nonlinearity induced by the fatigue crack.Numerical simulation and experimental testing were conducted to quantify the relation between the crack length and the wave nonlinearity collected in both transmission and reflection configurations using an appropriate nonlinear index, where the co-existence of flexural wave modes as a wave group at second harmonic was considered. Both numerical and experimental results revealed that the nonlinear index first increased monotonously and then it started to drop with the further growth of the crack, a phenomenon which can be utilised for quantitative assessment of initiation of fatigue cracks. Finally, the differences between the results from simulation and experiment are compared and discussed, where possible reasons for the change in nonlinear index in both approaches are elaborated.

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Section: Introductionmentioning

confidence: 99%

Quantitative fatigue crack evaluation in pipeline structures using nonlinear cylindrical waves

Guan

Wang

et al. 2018

Smart Mater. Struct.

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“…The formal expressions of 𝑃 (NL) and 𝐹 (NL) are presented in Refs. [26,28]. Based on the modal expansion approach for waveguide excitation, [26,33] both of 𝑃 (NL) and 𝐹 (NL) generate a series of double-frequency CGW (DFCGW) modes.…”

Section: Shg Of Cgw Propagationmentioning

confidence: 99%

“…[27] On this basis, it has been experimentally validated that the level of the accumulated damage in a circular tube can effectively be revealed by the acoustic nonlinearity parameter of primary CGW propagation through one full circumference. [28] Furthermore, Li et al analyzed the nonlinear feature of CGW propagation in a composite circular tube. [29][30][31][32] Although it is known that the nonlinear CGWs have the potential for nondestructive assessment of circular tube structures, the physical mechanism how the closed propagation feature of CGWs influences the effect of SHG of primary CGW still remains unrevealed.…”

Section: Introductionmentioning

confidence: 99%

Enhancement effect of cumulative second-harmonic generation by closed propagation feature of circumferential guided waves*

Gao¹,

Deng²,

Hu³

et al. 2020

Chinese Phys. B

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On the basis of second-order perturbation approximate and modal expansion approach, we investigate the enhancement effect of cumulative second-harmonic generation (SHG) of circumferential guided waves (CGWs) in a circular tube, which is inherently induced by the closed propagation feature of CGWs. An appropriate mode pair of primary- and double-frequency CGWs satisfying the phase velocity matching and nonzero energy flux is selected to ensure that the second harmonic generated by primary CGW propagation can accumulate along the circumference. Using a coherent superposition of multi-waves, a model of unidirectional CGW propagation is established for analyzing the enhancement effect of cumulative SHG of primary CGW mode selected. The theoretical analyses and numerical simulations performed directly demonstrate that the second harmonic generated does have a cumulative effect along the circumferential direction and the closed propagation feature of CGWs does enhance the magnitude of cumulative second harmonic generated. Potential applications of the enhancement effect of cumulative SHG of CGWs are considered and discussed. The theoretical analysis and numerical simulation perspective presented here yield an insight previously unavailable into the physical mechanism of the enhancement effect of cumulative SHG by closed propagation feature of CGWs in a circular tube.

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“…The crack-induced in spectral sidebands are isolated using a combined signal processing technique. Deng et al 18 tried to apply nonlinear GW on the assessment of accumulated damage in circular tubes. Liu et al 19 also proposed an effective way to identify the damages in examined structure based on spectral correlation and nonlinear wave modulation.…”

Section: Introductionmentioning

confidence: 99%

“…Deng et al. 18 tried to apply nonlinear GW on the assessment of accumulated damage in circular tubes. Liu et al.…”

Section: Introductionmentioning

confidence: 99%

A baseline-free damage detection approach based on distance compensation of guided waves

Qiu

Abbas

et al. 2018

Journal of Low Frequency Noise, Vibration and Active Control

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The baseline signal in structural inspection based on guided waves is difficult to be obtained under varying environmental conditions. To guarantee the precision of damage identification, developing baseline-free damage detection methods is significant in practical structural monitoring work. Conventional instantaneous baseline measurement needs a large number of PZT transducers. In this paper, a novel damage identification method for plate-like structures based on distance compensation is proposed to overcome this shortage. Combining with the concept of instantaneous baseline measurement, pitch-catch pairs of different propagation distance can be compared together to reveal the health information of the measured paths. This method overcomes the drawback of instantaneous measurement, which can only monitor the paths of identical wave travelling distance. Both simulations and experiments are conducted to validate the proposed method. Using this method, the influence of damage size and classification on amplitude variation is discussed. Finally, a baseline-free damage imaging technique is developed based on amplitude loss ratio of the first arriving wave package. The result shows a good agreement of the predicted result and the real damage location.

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Assessment of accumulated damage in circular tubes using nonlinear circumferential guided wave approach: A feasibility study

Cited by 22 publications

References 38 publications

Quantitative fatigue crack evaluation in pipeline structures using nonlinear cylindrical waves

Quantitative fatigue crack evaluation in pipeline structures using nonlinear cylindrical waves

Enhancement effect of cumulative second-harmonic generation by closed propagation feature of circumferential guided waves*

A baseline-free damage detection approach based on distance compensation of guided waves

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