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Signal Processing, ISSN 0165-1684, 03/2020, Volume 168, p. 107360
In this paper, a new two-dimensional localization algorithm based on the combination of detection theory and array processing frameworks is presented. Our... 
Lamb waves | Direction of arrival | Structural health monitoring | Generalized likelihood ratio test | Damage localization | Amplitude and phase estimation
Journal Article
Applied Acoustics, ISSN 0003-682X, 03/2020, Volume 160, p. 107124
The measurement of second harmonic Lamb waves is investigated as a promising feature extraction technique to characterize material nonlinearity in plate-like... 
Lamb waves | Second harmonic generation | Nonlinear parameters | Phase matching
Journal Article
Construction and Building Materials, ISSN 0950-0618, 02/2020, Volume 234, p. 117384
The nonlinear ultrasonic technique has been used to assess the plastic damage in High strength Q690 steel. The Q690 steel was stretched to different levels of... 
Lamb wave | Nonlinear ultrasonic technique | Q690 high strength steel | Plastic damage
Journal Article
Ultrasonics, ISSN 0041-624X, 02/2020, Volume 101, p. 105988
Corrosion damage of aircraft structures can significantly reduce the structural performance and endanger flight safety. There is a pressing need for research... 
Aircraft structure | Lamb wave tomography | Corrosion monitoring | Compressed sensing
Journal Article
Measurement, ISSN 0263-2241, 02/2020, Volume 151, p. 107148
The paper presents development and application of amplitude and physics based parameters for measuring intrinsic and fatigue induced material nonlinearities of... 
Lamb waves | Plate structures | Material nonlinearity measurement | Nonlinearity parameters | Remaining useful life
Journal Article
Applied Mathematical Modelling, ISSN 0307-904X, 02/2020, Volume 78, pp. 148 - 168
Effects of initial stresses on the dispersion curves of Lamb and SH waves in multilayered PZT-4/PZT-5A composites are investigated using the polynomial... 
Legendre polynomial method | Initial stresses | Guided wave propagation | Lamb and SH waves
Journal Article
Journal of Sound and Vibration, ISSN 0022-460X, 01/2020, Volume 465, p. 115015
The transmission and re-emission of energy by leaky Lamb waves from an immersed plate is being studied in the case of multi-modal propagation. When more than... 
Re-emitted field | Re-emission | Leaky lamb wave | Transmitted field | Multi-modal propagation | Leaky attenuation | Interferences | Mechanics | Acoustics | Physics
Journal Article
Journal of Sound and Vibration, ISSN 0022-460X, 01/2020, Volume 464, p. 114985
The method based on Lamb wave shows great potential for structural health monitoring (SHM) and nondestructive testing (NDT). Damage index (DI) is a series of... 
Lamb waves | Corrosion detection | Time-frequency distribution | Damage index
Journal Article
Ultrasonics, ISSN 0041-624X, 01/2020, Volume 100, p. 105984
In this paper we demonstrate a non-destructive, non-contact detection method for small defects in thin polymer plates using an air coupled ultrasonic (ACUS)... 
Lamb waves | Air-coupled ultrasound | Non-contact | Guided waves | Mode separation | Mode conversion | ACOUSTICS | POLYMER | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Journal Article
Wave Motion, ISSN 0165-2125, 01/2020, Volume 93, p. 102476
A common theoretical framework can be employed for modelling both active and passive approaches to structural health monitoring based on guided waves. The same... 
Lamb waves | Reciprocal theorem | Point-like source | Equivalent body forces | Elastodynamics | Edge crack scattering
Journal Article
Journal of Sound and Vibration, ISSN 0022-460X, 12/2019, Volume 463, p. 114945
In this paper, longitudinal elastic wave propagation in one-dimensional waveguides with sinusoidally varying depth is investigated. Furthermore, different... 
Superconvergent finite element | Inhomogenous waveguide | Dispersive waves | Convex waveguide | Longitudinal wave propagation | Sinusoidal depth variation | VIBRATION | SUTURES | BEAMS | RODS | ENGINEERING, MECHANICAL | ACOUSTICS | MECHANICS | DYNAMICS | FINITE-ELEMENT | RAYLEIGH-LAMB MODES
Journal Article
Composite Structures, ISSN 0263-8223, 12/2019, Volume 230, p. 111428
Developing the approach outlined in Part I, the wavenumber spectrum is evaluated. Firstly, for the th complex dispersion curve the asymptotics of the... 
Dispersion equations | Lamb waves | Layered plates | Asymptotic expansion | Complex spectrum | MECHANICS | DISPERSION-CURVES | MATERIALS SCIENCE, COMPOSITES | HIGH-ORDER | PROPAGATION
Journal Article
Science of the Total Environment, ISSN 0048-9697, 12/2019, Volume 696, p. 133544
Oil and gas extraction in the Athabasca Oil Sands Region of northeastern Alberta, Canada has increased anthropogenic nitrous oxide (NO ) and ammonia (NH )... 
Boreal forest | Nitrogen cycle | Populus tremuloides Michx | Canopy cover | Nitrogen deposition | Pinus banksiana Lamb | Soil NO3− availability
Journal Article
Composite Structures, ISSN 0263-8223, 12/2019, Volume 230, p. 111495
This work presents a generic Finite Element (FE) based computational scheme for quantifying guided wave interaction with Localised Nonlinear Structural Damage... 
Wave interaction with nonlinear damage | Nonlinear ultrasound | Wave finite element method | Finite element modelling | Composite structures | LAMB WAVES | MATERIALS SCIENCE, COMPOSITES | SIMULATION | IDENTIFICATION | ULTRASONIC-WAVES | REFLECTION | MECHANICS | FATIGUE DAMAGE | TEMPERATURE | PLATE | PROPAGATION
Journal Article
Composite Structures, ISSN 0263-8223, 12/2019, Volume 230, p. 111429
A new method combining the asymptotic and iteration approaches to study the total wavenumber spectrum for a plate made of isotropic layers is suggested. In... 
Dispersion equations | Lamb waves | Layered plates | Asymptotic expansion | Complex spectrum | ORTHOGONALITY RELATION | MATERIALS SCIENCE, COMPOSITES | GUIDED-WAVES | ELASTIC-WAVES | MECHANICS | ANISOTROPIC MEDIA | SURFACE | DISPERSION-CURVES | FINITE CRACK | MODE CONVERSION | PROPAGATION | SCATTERING
Journal Article
Acta Mechanica Solida Sinica, ISSN 0894-9166, 12/2019, Volume 32, Issue 6, pp. 767 - 784
In this paper, three-dimensional finite-element modeling is conducted to investigate the nonlinear interactions between Lamb waves and microcracks. The... 
Engineering | Microcrack | Classical Mechanics | Nonlinear ultrasonic | Finite-element method | Resonant condition | Theoretical and Applied Mechanics | Surfaces and Interfaces, Thin Films | Lamb wave mixing
Journal Article
Journal of Nondestructive Evaluation, ISSN 0195-9298, 12/2019, Volume 38, Issue 4, pp. 1 - 16
Journal Article