Numerical simulation of the Lamb wave propagation in honeycomb sandwich panels: A parametric study

Hosseini, Seyed Mohammad Hossein; Gabbert, Ulrich

doi:10.1016/j.compstruct.2012.09.055

Cited by 41 publications

(23 citation statements)

References 15 publications

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“…Numerical model of a honeycomb sandwich plate for studying Lamb wave propagation in heterogeneous media. A clear difference between the traveling waves in the top and bottom cover plates is visible, which is due to the energy transmission through the core of the plate .…”

Section: Discussionmentioning

confidence: 99%

Numerical analysis of Lamb waves using the finite and spectral cell methods

Duczek

Joulaian

Düster

et al. 2014

Int. J. Numer. Meth. Engng

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SUMMARYAn accurate and efficient simulation of wave propagation phenomena plays an important role in different engineering disciplines. In structural health monitoring, for example, ultrasonic guided waves are used to detect and localize damage and to assess the structural integrity of the component part under consideration. Because of the complexity of real structures, the numerical simulation of structural health monitoring systems is a computationally demanding task. Therefore, to facilitate the analysis of wave propagation phenomena, the authors propose to combine the finite cell method with the spectral element method. The ensuing novel method is referred to as the spectral cell method. Because it does not rely on body‐fitted meshes, the resulting approach eliminates all discretization difficulties encountered in conventional finite element methods. Moreover, with the aid of mass lumping, it paves the way for the use of explicit time‐integration algorithms. In the first part of the paper, we show that using a lumped mass matrix instead of the consistent one has no detrimental effect on the accuracy of the spectral element method. We introduce the spectral cell method in the second part, showing that, when applied to wave propagation analysis, the spectral cell method yields results comparable with other standard higher order finite element approaches.Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Numerical analysis of Lamb waves using the finite and spectral cell methods

Duczek

Joulaian

Düster

et al. 2014

Int. J. Numer. Meth. Engng

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“…The considered waveguide is a rectangular and symmetric sandwich plate, composed of an 8‐mm‐thick homogenized honeycomb core surrounded by 1‐mm‐thick fibre‐reinforced skins (see Hosseini and Gabbert[] for example of more complex geometrical models). The 400‐mm‐width cross section is modelled on ANSYS V12.1, and convergence is ensured within the considered frequency range by using 360 linear brick elements having 8 nodes and 3 DOFs per node.…”

Section: Guided Csw In the Sandwich Platementioning

confidence: 99%

Wave-based SHM of sandwich structures using cross-sectional waves

Droz

Bareille

Lainé

et al. 2017

Struct Control Health Monit

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Summary The identification of structural damage in composite waveguides is a critical issue in aerospace and transportation industries. Frequently, these structures involve periodic patterns or dissipative components that considerably reduce the range, robustness, and available bandwidth of ultrasonic structural health monitoring techniques. On the other hand, wave‐based methods provide more accurate information on a defect's type, size, and location than modal analysis techniques. This paper focuses on a low‐frequency wave‐based method for structural integrity assessment of complex waveguides. The wave finite element method is employed to compute the dispersion curves of non‐standard cross‐sectional waves exhibiting increased strain energy. The spectral results are used to analyse the diffusion of guided elastic waves through representative localized defects in a laminated sandwich panel. To validate the diffusion model, reflection and transmission coefficients are determined for several wave pulses on typical defects using time‐domain virtual experiments and cross‐sectional energy acquisition. Results demonstrate that using cross‐sectional waves provides a sensitivity to damage up to 2.8× higher than flexural waves in the low‐frequency range. These results are explained by the presence of local resonances within the cross section, producing wavelengths in the transverse direction of propagation. These waves may prove suitable for cost‐effective structural health monitoring applications because they can travel long distances through heterogeneous and periodic structures.

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“…8,9,[22][23][24] The simulations were carried out on (172 mm Â 114 mm Â 21 mm) honeycomb sample that consisted of two 2.5 mm thickness CFRP skins and a hexagonal aluminium core having thickness of 16 mm. The FE model of the honeycomb sandwich was composed of 3D solid elements (SOLID64) for the two skins of CRFP plate and 2D solid shell elements (SHELL63) for the aluminium honeycomb core.…”

Section: Simulation Of Guided Waves Propagating Along a Honeycomb Sanmentioning

confidence: 99%

“…[9][10][11][12] There have been many studies carried out related to UGW methods showing their advantages over other NDT techniques. [13][14][15][16][17] However, in the case when the internal structure of the multilayered material is not uniform nor known, the excitation and interpretation of the UGW signals received become very complicated and very sensitive to the adjustment of operating parameters of the experimental set-up (type of the excited modes of UGW, operation frequency etc.).…”

Section: Introductionmentioning

confidence: 99%

An Adjustment-Free NDT Technique for Defect Detection in Multilayered Composite Constructions Using Ultrasonic Guided Waves

Samaitis

2014

Int. J. Str. Stab. Dyn.

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In recent years, the novel lightweight honeycomb sandwich structures have been applied in a wide range of industries. However, daily operational conditions, fatigue, as well as various defects developed during exploitation lead to the risk of structure failure. To meet safety and economical requirements, such structures must be tested. In this paper, an ultrasonic pitchcatch technique based on ultrasonic guided waves (UGW) for detection of defects in honeycomb sandwich structures is proposed. The technique is based on simultaneous scanning of a pair of contact type transmitting and receiving transducers positioned at¯xed distance from each other. The proposed technique has been veri¯ed by the experiments and simulations on a honeycomb sandwich structure with an aluminium core and carbon¯ber skin. The results have shown that di®erent types of internal nonhomogeneities, such as changes in internal multilayered structure, skin delaminations or disbonds between the skin and the core, give the e®ects of amplitude and phase velocity deviations, which can be detected with accuracy reasonable for practical applications.

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Numerical simulation of the Lamb wave propagation in honeycomb sandwich panels: A parametric study

Cited by 41 publications

References 15 publications

Numerical analysis of Lamb waves using the finite and spectral cell methods

Numerical analysis of Lamb waves using the finite and spectral cell methods

Wave-based SHM of sandwich structures using cross-sectional waves

An Adjustment-Free NDT Technique for Defect Detection in Multilayered Composite Constructions Using Ultrasonic Guided Waves

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