Lamb wave line sensing for crack detection in a welded stiffener [PDF]
, 2014 This paper proposes a novel Lamb wave line sensing technique for crack detection in a welded stiffener. The proposed technique overcomes one of the biggest technical challenges of Lamb wave crack detection for real structure applications: crack-induced ...
Alleyne +19 more
core +2 more sources
Scanning laser techniques for characterisation of different surface breaking defect geometries [PDF]
, 2012 Measurements using a laser scanning system consisting of a pulsed Nd:YAG laser to generate surface ultrasonic waves and an interferometer to detect the surface displacement, are presented for different samples and defect geometries.
Clough, A. R. +4 more
core
Elastic Wave Eigenmode Solver for Acoustic Waveguides [PDF]
, 2017 A numerical solver for the elastic wave eigenmodes in acoustic waveguides of inhomogeneous cross-section is presented. Operating under the assumptions of linear, isotropic materials, it utilizes a finite-difference method on a staggered grid to solve for
Dostart, Nathan +2 more
core +4 more sources
Transformation seismology: composite soil lenses for steering surface elastic Rayleigh waves. [PDF]
, 2016 Metamaterials are artificially structured media that exibit properties beyond those usually encountered in nature. Typically they are developed for electromagnetic waves at millimetric down to nanometric scales, or for acoustics, at centimeter scales. By
Colombi, A +3 more
core +2 more sources
Instantaneous baseline damage localisation using sensor mapping [PDF]
, 2016 In this paper an instantaneously recorded baseline method is proposed using piezoelectric transducers for damage localisation under varying temperature.
Aliabadi, MH +2 more
core +1 more source
Linear and nonlinear dynamics of axisymmetric waves in the hollow core vortex [PDF]
, 2008 The dynamics of trailing vortices are under constant investigation during last decades since it is of considerable interest to reduce aircraft wakes and associated hazards to forthcoming planes.
Brancher, Pierre +2 more
core
Optimal Sensors Placement to Enhance Damage Detection in Composite Plates [PDF]
, 2014 This paper examines an important challenge in ultrasonic structural health monitoring (SHM), which is the problem of the optimal placement of sensors in order to accurately detect and localize damages.
COFFIGNAL, Gérard +5 more
core +3 more sources
Adhesive joint evaluation by ultrasonic interface and lamb waves [PDF]
Some results on the application of interface and Lamb waves for the study of curing of thin adhesive layers were summarized. In the case of thick substrates (thickness much more than the wave length) the interface waves can be used.
Rokhlin, S. I.
core +1 more source
Lamb Wave-Based FDM-PPM Method Data Transmission Scheme in Plate Structures
SensorsLamb wave-based non-electromagnetic communication is an effective solution for real-time information exchange in health monitoring networks of large metallic plate structures.
Tong Xu +4 more
doaj +1 more source
Transient Propagation and Scattering of Quasi-Rayleigh Waves in Plates: Quantitative comparison between Pulsed TV-Holography Measurements and FC(Gram) elastodynamic simulations [PDF]
, 2019 We study the scattering of transient, high-frequency, narrow-band quasi-Rayleigh elastic waves by through-thickness holes in aluminum plates, in the framework of ultrasonic nondestructive testing (NDT) based on full-field optical detection.
Amlani, Faisal +6 more
core +1 more source