Ultrasonic guided wave inspection of an interface between an anisotropic layer and a metallic half space

Gardner, M.; Rose, Joseph L.; Moose, C. A.

doi:10.1063/1.4789050

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The size of the aluminum plate is 200 × 200 × 8 mm, while the size of the steel plate is 300 × 300 × 8 mm. Different layers are bonded together by epoxy glue (Gardner, 2013). The defects are manufactured by milling on the aluminum or steel plates at the respective interface with a depth of 0.5 mm.…”

Section: Experimental Set-upmentioning

confidence: 99%

Imaging method of interfacial anomalies in layered structures

Wang

Pang

et al. 2022

Journal of Vibration and Control

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Layered structures are progressively critical to several fields like aerospace, pipeline transportation, and petrochemical engineering. However, the anomalies located on the interfaces between the layers are troublesome yet problematic to image through traditional non-destructive evaluation methods. This study presented an imaging method utilizing interface waves and visualized the interfacial anomalies in layered structures. The paper first derived and solved the dispersion equations of a layered plate. The wave structure of the interface waves and their interaction mechanisms with interfacial anomalies make them inherently sensitive to interfacial anomalies. Moreover, the interface wave modes are non-dispersive at high frequencies, causing macroscopic differences between the signals with or without abnormal features. On that basis, correlation analysis and probabilistic reconstruction formed the imaging algorithm in this work. Lastly, the experimental system was tested on two different layered metal plates. The results show that the system can precisely depict interfacial anomalies of different shapes. Especially for the circular anomalies, the produced images coincide with the pre-manufactured defects with relatively minor errors of location and area.

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Section: Experimental Set-upmentioning

confidence: 99%

Imaging method of interfacial anomalies in layered structures

Wang

Pang

et al. 2022

Journal of Vibration and Control

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“…Experiments verified the prediction of both sensitive and insensitive modes. Gardner et al 26 studied the interface wave between an anisotropic layer and a metallic half space.…”

Section: Introductionmentioning

confidence: 99%

Modal content-based damage indicators for disbonds in adhesively bonded composite structures

Ren

Lissenden

2016

Structural Health Monitoring

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Adhesive bonding is a promising joining method for composite materials. This article focuses on the use of modal content-based damage indicators to improve the sensitivity of guided waves to disbonds in the adhesive. Wave-defect interaction is modeled using frequency-domain finite element analysis in order to identify modes sensitive to adhesive degradation in joints between carbon fiber-reinforced polymer laminates. Phased array transducers and multielement array sensors designed for structural health monitoring are employed to enable preferential mode excitation and modal content extraction, respectively. The domains in dispersion curve space predicted to have good, intermediate, and no sensitivity to disbond were experimentally found to have good, intermediate, and limited sensitivity using a feature of the received signals associated with the modal amplitude or a modal amplitude ratio. Furthermore, the modal amplitude was found to decrease monotonically with increasing disbond size, demonstrating that it has potential to quantitatively size disbonds.

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Ultrasonic guided wave inspection of an interface between an anisotropic layer and a metallic half space

Cited by 2 publications

References 3 publications

Imaging method of interfacial anomalies in layered structures

Imaging method of interfacial anomalies in layered structures

Modal content-based damage indicators for disbonds in adhesively bonded composite structures

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