Baseline-free damage detection in composite plates using edge-reflected Lamb waves
Sign Up to like & getrecommendations! Published in 2020 at "Composite Structures"
DOI: 10.1016/j.compstruct.2020.112423
Abstract: Abstract This paper presents a baseline-free damage detection method which leverages the multipath reflected Lamb waves for structural prognosis. From the viewpoint of ray tracing, the reflection of a propagating wave at a free edge… read more here.
Keywords: damage detection; edge; lamb waves; baseline free ... See more keywords
The excitation and detection of Lamb waves in a droplet-loaded plate using air-coupled ultrasonic transducers
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2020.108954
Abstract: Abstract The signals in an air-coupled ultrasonic inspection system using Lamb waves would be affected by liquid droplets on the surface of test plates. To investigate the wave behaviour, a plate-droplet inspection system comprising a… read more here.
Keywords: lamb waves; air coupled; plate; coupled ultrasonic ... See more keywords
Self‐action of propagating and standing Lamb waves in the plates exhibiting hysteretic nonlinearity: Nonlinear zero‐group velocity modes
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2017.04.010
Abstract: HIGHLIGHTSLamb waves in plates exhibiting hysteretic quadratic nonlinearity.Self‐induced velocity dispersion and absorption in symmetric and antisymmetric Lamb waves.Shift of the zero group velocity points positions in dispersion of finite amplitude Lamb waves.Temporal dynamics of the… read more here.
Keywords: lamb waves; zero group; nonlinearity; standing lamb ... See more keywords
Transmission characteristics of the S0 and A0 Lamb waves at contacting edges of plates
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DOI: 10.1016/j.ultras.2017.06.009
Abstract: &NA; In order to gain basic insight into the interaction between ultrasonic guided waves and structural discontinuities with contacting surfaces, the transmission characteristics of Lamb waves at contacting edges of two plates are studied experimentally.… read more here.
Keywords: lamb waves; transmission; contacting edges; frequency ... See more keywords
Nonlinear scattering and mode conversion of Lamb waves at breathing cracks: An efficient numerical approach.
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DOI: 10.1016/j.ultras.2018.09.011
Abstract: This article presents an efficient numerical approach to the investigation of nonlinear scattering and mode conversion phenomena of Lamb waves as they interact with breathing cracks. A Local Interaction Simulation Approach (LISA) is adopted, which… read more here.
Keywords: lamb waves; scattering mode; mode conversion; nonlinear scattering ... See more keywords
Modeling and simulation of frequency mixing response of two counter-propagating Lamb waves in a two-layered plate.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106109
Abstract: This work investigates modeling of the frequency mixing response (FMR) induced by two counter-propagating Lamb waves with different frequencies in a two-layered plate, and then numerically simulates and analyzes the influences of interfacial properties on… read more here.
Keywords: propagating lamb; lamb waves; layered plate; counter propagating ... See more keywords
High-resolution Lamb waves dispersion curves estimation and elastic property inversion.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106427
Abstract: Ultrasonic Lamb waves have been widely used for non-destructive evaluation and testing. However, the inversion from the measured guided signals to the material properties is still a challenging task in terms of multimodal dispersive signal… read more here.
Keywords: high resolution; inversion; lamb waves; dispersion ... See more keywords
Two-dimensional scattering features of the mixed second harmonic A0 mode Lamb waves for incipient damage localization.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106554
Abstract: Inspection of incipient structural damage is of great significance. Existing techniques based on nonlinear guided waves have shown great promise for the detection of incipient damage due to material microstructure changes, but with only limited… read more here.
Keywords: lamb waves; damage localization; mode lamb; damage ... See more keywords
Mode Conversion and Scattering of Lamb Waves at Delaminations in Composite Laminates
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Aerospace Engineering"
DOI: 10.1061/(asce)as.1943-5525.0001060
Abstract: AbstractThis paper presents a study of Lamb wave scattering and mode conversion at a delamination in quasi-isotropic (QI) composite laminates. The study employs the fundamental antisymmetric mode (... read more here.
Keywords: lamb waves; composite laminates; mode conversion; scattering lamb ... See more keywords
Guided Lamb waves in reconfigurable phononic crystal waveguides
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DOI: 10.1063/5.0056202
Abstract: We demonstrate experimentally the manipulation of Lamb waves guided along reconfigurable phononic circuits created by defects composed of threaded rods held with nuts in a perforated solid phononic crystal slab. Adjusting the free length of… read more here.
Keywords: phononic crystal; lamb waves; guided lamb; waves reconfigurable ... See more keywords
Lamb waves in functionally graded plates: Proof of stratification convergence
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DOI: 10.1080/15376494.2020.1870781
Abstract: Lamb waves propagating in anisotropic functionally graded (FG) plates with an arbitrary continuous transverse inhomogeneity are considered. Along with the FG plates, stratified ones with the homoge... read more here.
Keywords: graded plates; lamb waves; proof stratification; plates proof ... See more keywords