Ultrasonic guided interface waves at a soft-stiff boundary

Bostron, Jason; Rose, Joseph L.; Moose, C. A.

doi:10.1121/1.4826177

Cited by 21 publications

(8 citation statements)

References 25 publications

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“…Fromme 24 studied the scattering pattern of guided waves using three-dimensional (3D) finite element analysis (FEA) to examine the complex wavefields introduced by a stiffener on a steel plate. Bostron et al 25 studied interface waves traveling along the boundary between a soft and stiff medium using analytical and FEA. Shen and Giurgiutiu 26 developed an analytical tool to simulate Lamb wave propagation and interaction with damage including mode conversion, transmission, reflection, and nonlinear higher harmonics.…”

Section: Simulated Wavefieldmentioning

confidence: 99%

Damage identification for composite structures using a cross-correlation reverse-time migration technique

Fang

2015

Structural Health Monitoring

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This article presents a reverse-time migration technique to image damage by cross-correlating forward and backward propagating wavefields in composite structures using flexural wave signals. First, theory and procedures are presented for damage imaging for composite plates using a zero-lag cross-correlation imaging condition for reverse-time migration, briefly called cross-correlation-based reverse-time migration. The zero-lag cross-correlation was calculated between the forward wavefield and the backward wavefield. The forward wavefield is formed by the excitation from the actuator using a finite difference method, and the backward wavefield is generated by back-propagating the time-reversed scattered wavefield using the same finite difference method. Simulation studies were first examined to verify the capability of using the proposed zero-lag cross-correlation imaging condition to image single and multiple sites of damage. Two experiments were conducted where either the surface-mounted piezoelectric wafers or non-contact laser Doppler vibrometer was used for receiving the scattered wave signals along a linear array. The scattered wave signals were extrapolated in reverse-time to generate backward propagating wavefields. The experimental studies demonstrated that the cross-correlation-based reverse-time migration can accurately locate and image multiple sites of damage with improved resolution and higher efficiency in comparison with classical pre-stack reverse-time migration.

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Section: Simulated Wavefieldmentioning

confidence: 99%

Damage identification for composite structures using a cross-correlation reverse-time migration technique

Fang

2015

Structural Health Monitoring

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“…All of these features show promise to be used in an inspection for bond evaluation, because they have clear monotonically changing trends with change in bond length. Additional analysis of this problem will be given in [4]. …”

Section: Experiments 1: Feature Selectionmentioning

confidence: 99%

“…2-D FEM models in Abaqus were used to simulate wave propagation and several promising physically-based wave features were identified which correlate to bond length. A more detailed description of this work can be found in [4].…”

Section: Introductionmentioning

confidence: 99%

Phased array tuning for optimal ultrasonic guided wave mode selection

Bostron

Rose

Moose³

2014

AIP Conference Proceedings

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Articles you may be interested inPhase-delayed laser diode array allows ultrasonic guided wave mode selection and tuning Abstract. Ultrasonic guided waves have become widely used in a variety of nondestructive evaluation applications due to their efficiency in defect detection, ability to inspect hidden areas, and other reasons. With a thorough understanding of guided wave mechanics, researchers can predict which guided wave modes will have a high probability of success in a particular nondestructive evaluation application. However, work continues to find optimal mode and frequency selection. An "optimal" mode could give the highest sensitivity to defects or the greatest penetration power, increasing inspection efficiency. In this work, we consider the use of guided interface waves for bond evaluation. A phased comb array transducer is used to sweep in the phase velocity -frequency space in an effort to determine optimal modes.

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“…Though Van Velsor [42] identified a feature based on the frequency content to study coating debonding in a multi-layered hollow cylinder using shear horizontal (SH) guided waves. Moreover, Bostron [43] conducted a successful bond inspection at the boundary between a viscoelastic coating and a steel plate by the guided interface waves, based on both frequency-based and time-based features. Some other numerical and analytical studies have been also proposed [44,45], but overall more effective works still entail for the understanding of the interaction of guided waves with degraded bonding.…”

Section: Introductionmentioning

confidence: 99%

A novel application of ultrasonic Lamb waves: studying adhesive effects on the inspection of coating debonding in a three-layer waveguide

Mehrabi

Soorgee

Habibi

et al. 2020

Nondestructive Testing and Evaluation

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In this research, a thorough experimental and numerical study is conducted to investigate a novel application of the ultrasonic Lamb waves which is its capability to detect of the coating disbond in a double-layer waveguide (aluminium-adhesive) and a triple-layer waveguide (aluminium-adhesive-coating). The experimental tests are set up and implemented to evaluate how the attenuation of Lamb waves is affected by the adhesive bonding beside the contribution of the coating layer to the behaviour of Lamb waves. The semi-analytical finite element (SAFE) method is employed to analyse and identify the properties of guided wave modes propagating along the coated structures. In the presence of additive white Gaussian noise (AWGN), a range of important indices including energy index (EI), amplitude index (AI), pulse width index (PWI), and the time of flight index (ToFI) are worked out in association with the disbond length. It is inferred that a) even in the very noisy environment of 0 dB SNR, the Lamb waves are effectively able to identify debonding defects particularly using the EI, giving sensitivity rates 105% and 30% for triple-layer and double-layer, respectively; b) the contribution of adhesive to the absorption of the guided wave energy is 30%, 40%, and 50% in EI, AI, and PWI, respectively, corroborating the value of the features to distinguish the debonding between each layer of bonded structures.

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Ultrasonic guided interface waves at a soft-stiff boundary

Cited by 21 publications

References 25 publications

Damage identification for composite structures using a cross-correlation reverse-time migration technique

Damage identification for composite structures using a cross-correlation reverse-time migration technique

Phased array tuning for optimal ultrasonic guided wave mode selection

A novel application of ultrasonic Lamb waves: studying adhesive effects on the inspection of coating debonding in a three-layer waveguide

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