Effective stiffness matrix method for predicting the dispersion curves in general anisotropic composites
Sign Up to like & getrecommendations! Published in 2019 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-019-01552-x
Abstract: In multi-layered composite laminates, Lamb wave equations are obtained using the transfer matrix method and global matrix method. These methods have numerical issues (missing roots or spurious roots) while solving the Lamb wave equations especially… read more here.
Keywords: method; effective stiffness; lamb wave; matrix method ... See more keywords
Online Stress Monitoring Technique Based on Lamb-wave Measurements and a Convolutional Neural Network Under Static and Dynamic Loadings
Sign Up to like & getrecommendations! Published in 2019 at "Experimental Mechanics"
DOI: 10.1007/s11340-019-00546-8
Abstract: This paper presents the development of an online stress monitoring technique based on Lamb-wave measurements and a convolutional neural network (CNN) for metallic plate-like structures under static and dynamic loadings. Monitoring stress levels in structural… read more here.
Keywords: dynamic loadings; stress; lamb wave; stress monitoring ... See more keywords
Lamb wave mode scattering analysis on adhesively bonded single lap joint using modal decomposition method
Sign Up to like & getrecommendations! Published in 2021 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2020.08.017
Abstract: Abstract Problems related to scattering phenomena of the antisymmetric fundamental Lamb wave mode with an adhesively bonded lap joint containing a disbond in the adhesive layer is being solved within the framework of this paper.… read more here.
Keywords: adhesively bonded; lap joint; lamb; wave mode ... See more keywords
Peridynamic modeling of Lamb wave propagation in bimaterial plates
Sign Up to like & getrecommendations! Published in 2019 at "Composite Structures"
DOI: 10.1016/j.compstruct.2019.01.108
Abstract: Abstract In this study the nonlocal bond-based peridynamic (PD) theory was applied to simulate Lamb wave transmission in 2D bimaterial plates. Plates of unlike materials were jointed end-to-end to make a bimaterial plate. The surface… read more here.
Keywords: peridynamic modeling; modeling lamb; bimaterial plates; wave propagation ... See more keywords
Lamb wave inspection for composite laminates using a combined method of sparse reconstruction and delay-and-sum
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DOI: 10.1016/j.compstruct.2019.110973
Abstract: Abstract A narrowband tone burst excitation is usually required in most Lamb wave inspection techniques in order to reduce the dispersion effect and maintain mode purity, especially in the case that dispersion compensation is hard… read more here.
Keywords: reconstruction; wave inspection; inspection; combined method ... See more keywords
A novel nonlinear Lamb wave based approach for detection of multiple disbonds in adhesive joints
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Adhesion and Adhesives"
DOI: 10.1016/j.ijadhadh.2021.102842
Abstract: Abstract This paper proposes a Lamb wave based technique for detecting multiple disbonds using novel damage features based on mode conversion and nonlinear breathing phenomena. An aluminum scarf joint with a top cap has been… read more here.
Keywords: multiple disbonds; wave based; damage; damage features ... See more keywords
Theoretical and experimental measurement of intrinsic and fatigue induced material nonlinearities using Lamb wave based nonlinearity parameters
Sign Up to like & getrecommendations! Published in 2020 at "Measurement"
DOI: 10.1016/j.measurement.2019.107148
Abstract: Abstract The paper presents development and application of amplitude and physics based parameters for measuring intrinsic and fatigue induced material nonlinearities of plate materials considering Lamb wave motion into them. The amplitude based parameter is… read more here.
Keywords: material nonlinearities; wave; induced material; fatigue induced ... See more keywords
Incremental scattering of the A0 Lamb wave mode from a notch emanating from a through‐hole
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DOI: 10.1016/j.ultras.2018.08.004
Abstract: HighlightsIncremental Lamb wave scattering from a notch emanating from a through‐hole is analyzed.Multiple frequencies and hole diameters are considered as well as a notch with no hole.Numerical results are validated with experimentally measured scattering patterns.The… read more here.
Keywords: emanating hole; notch emanating; incremental scattering; lamb wave ... See more keywords
Environmental and operational conditions effects on Lamb wave based structural health monitoring systems: A review.
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DOI: 10.1016/j.ultras.2020.106114
Abstract: Lamb wave is widely recognized as one of the most encouraging tools for structural health monitoring (SHM) systems. In spite of many favourable characteristics of Lamb wave for SHM, real-world application of these systems is… read more here.
Keywords: health monitoring; wave based; operational conditions; structural health ... See more keywords
A technique based on nonlinear Hanning-windowed chirplet model and genetic algorithm for parameter estimation of Lamb wave signals.
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DOI: 10.1016/j.ultras.2020.106333
Abstract: Parameter estimation techniques based on chirplet models and intelligent algorithms can realize the simultaneous multi-information extraction of signals. They have attracted considerable attention for the processing of Lamb wave signals to detect defects and evaluate… read more here.
Keywords: parameter estimation; wave signals; model; hanning windowed ... See more keywords
Lamb wave coupled resonance for SAW acoustofluidics
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DOI: 10.1063/5.0035906
Abstract: A surface acoustic wave (SAW)-driven acoustofluidic chip of high energy efficiency is proposed through model analysis. The chip supports propagation of Lamb waves in the lid above a fluid-filled channel. Eigenmode resonance in the on-chip… read more here.
Keywords: wave coupled; resonance; saw acoustofluidics; coupled resonance ... See more keywords