Instantaneous wavenumber estimation for damage quantification in layered plate structures

Mesnil, Olivier; Leckey, Cara A. C.; Ruzzene, Massimo

doi:10.1117/12.2044670

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…It was also observed that there is no converted S0 mode when the A0 mode encounters delaminations located at a symmetric interface. The combination of several damage mechanisms for realistic impact damage in laminated composites makes the accurate modelling more challenging, with limited studies employing full 3D analysis 24 . Recent work 25 has demonstrated that 3D simulations can accurately predict the scattering characteristics of guided waves at a circular-shaped delamination.…”

Section: Introductionmentioning

confidence: 99%

Scattering of guided waves at delaminations in composite plates

Murat

Khalili

Fromme

2016

The Journal of the Acoustical Society of America

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Carbon fiber laminate composites are increasingly employed for aerospace structures as they offer advantages, such as a good strength to weight ratio. However, impact during the operation and servicing of the aircraft can lead to barely visible and difficult to detect damage. Depending on the severity of the impact, fiber and matrix breakage or delaminations can occur, reducing the load carrying capacity of the structure. Efficient nondestructive testing and structural health monitoring of composite panels can be achieved using guided ultrasonic waves propagating along the structure. The scattering of the A0 Lamb wave mode at delaminations was investigated using a full three-dimensional (3D) finite element (FE) analysis. The influence of the delamination geometry (size and depth) was systematically evaluated. In addition to the depth dependency, a significant influence of the delamination width due to sideways reflection of the guided waves within the delamination area was found. Mixed-mode defects were simulated using a combined model of delamination with localized material degradation. The guided wave scattering at cross-ply composite plates with impact damage was measured experimentally using a non-contact laser interferometer. Good agreement between experiments and FE predictions using the mixed-mode model for an approximation of the impact damage was found.

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Section: Introductionmentioning

confidence: 99%

Scattering of guided waves at delaminations in composite plates

Murat

Khalili

Fromme

2016

The Journal of the Acoustical Society of America

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“…From the literature, the potential for the impact damage in composites has been demonstrated, but the interaction of the guided waves with the complex and multi-mode impact damage requires improved understanding. It is quite challenging for producing an accurate modelling of a real impact employing full 3D analysis [17]. Varieties of factors affect the propagation and scattering of guided waves in composite structures and could lead to inaccurate monitoring and defect detection results.…”

Section: Introductionmentioning

confidence: 99%

Modeling Analysis of Guided Ultrasonic Waves in Composite Plates with Impact Damage

Ibrahim

Murat

2018

IJET

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This paper investigates the propagation of guided ultrasonic waves and the interaction with impact damage in composite plates using a full three-dimensional Finite Element analysis. Impact damage in the composite plate was modeled as rectangular-and T-shaped delaminations. In order to provide guidelines for extending the modeling of realistic multimode impact damage, the impact damage was modeled as a combination of the delamination and reduced materials properties. The information obtained from these methods was compared to the experimental results around the damage area for a validation. There was a reasonable similarity between the experimental and FE results. The FE simulations can effectively model the scattering characteristics of the A 0 mode wave propagation in anisotropic composite plates. This suggests that the simplified and easy-to-implement FE model could be used to represent the complex impact damage in composite plates. This could be useful for the improvement of the FE modeling and performance of guided wave methods for the in-situ NDE of large composite structures.

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“…depth) coordinates of defects in composites. In Mesnil et al, 17 the authors show a first collaborative work resulting in an automatic feature extraction process relying on the Smooth Sparse Decomposition 18 (SSD) algorithm, which is a flexible defect detection technique to automatically separate the defect component from the background, based on the different spatial structure of each component.…”

Section: Introductionmentioning

confidence: 99%

Fast wavenumber measurement for accurate and automatic location and quantification of defect in composite

Mesnil

Yan

Ruzzene

et al. 2016

Structural Health Monitoring

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As the use of and dependence on composite materials is increasing in all industries, there is a strong need for reliable, accurate, and fast techniques for damage detection and quantification in composite plate-like structures. Among the various nondestructive evaluation and structural health monitoring techniques, many rely on Lamb wave long-range propagation. A wavenumber quantification technique called frequency domain instantaneous wavenumber has been previously proven to be an efficient technique to estimate in-plane (i.e. position) and out-of-plane (i.e. depth) coordinates of defects in composites. This paper further develops this technique by (1) reducing the acquisition time by one order of magnitude while improving the quality of detection, (2) implementing an automatic feature extraction process to automatically assess the geometry and obtain information which can be directly used for decision making, and (3) quantifying the cumulative error of the whole process.

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Instantaneous wavenumber estimation for damage quantification in layered plate structures

Cited by 9 publications

References 4 publications

Scattering of guided waves at delaminations in composite plates

Scattering of guided waves at delaminations in composite plates

Modeling Analysis of Guided Ultrasonic Waves in Composite Plates with Impact Damage

Fast wavenumber measurement for accurate and automatic location and quantification of defect in composite

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