Results 41 to 50 of about 2,905,814 (268)
A Lamb wave quantification model for inclined cracks with experimental validation
, 2020 This paper investigates the influence of crack orientation on damage quantification using Lamb wave in plate structures. Finite element simulation is performed to acquire Lamb wave signal responses for different configurations of crack orientations and ...
Jingjing He +3 more
semanticscholar +1 more source
Series solution to the laser-ion interaction in a Raman-type configuration [PDF]
, 2001 The Raman interaction of a trapped ultracold ion with two travelling wave lasers is studied analytically with series solutions, in the absence of the rotating wave approximation (RWA) and the restriction of both the Lamb-Dicke limit and the weak ...
Feng, Mang
core +2 more sources
Lamb wave-based mapping of plate structures via frontier exploration.
Ultrasonics, 2020 Substantial improvements in material processing and manufacturing techniques in recent years necessitate the introduction of effective and efficient nondestructive testing (NDT) methods that can seamlessly integrate into day-to-day aircraft and aerospace
A. Miranda, J. V. Hook, C. Schaal
semanticscholar +1 more source
Modes Control of Lamb Wave in Plates Using Meander-Line Electromagnetic Acoustic Transducers
Applied Sciences, 2020 The multimode and dispersion characteristics of Lamb waves make them difficult to apply to nondestructive evaluation. This paper presents a paired configuration of a meander-line coil electromagnetic acoustic transducer (EMAT) to generate a single-mode ...
Yinghong Zhang, Zhenghua Qian, Bin Wang
doaj +1 more source
Phase-sensitive detection of Bragg scattering at 1D optical lattices [PDF]
, 2004 We report on the observation of Bragg scattering at 1D atomic lattices. Cold atoms are confined by optical dipole forces at the antinodes of a standing wave generated by the two counter-propagating modes of a laser-driven high-finesse ring cavity.
A. Ludewig +6 more
core +1 more source
A Lamb wave lens for acoustic microscopy [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1992 In a conventional scanning acoustic microscope the excited leaky modes contribute significantly to the high contrast obtained in the images. However, all such modes exist simultaneously, and the interpretation of the images is not straightforward, especially in layered media.
Atalar, A., Koymen H., Degertekin F.L.
openaire +4 more sources
Eigenstates of the Atom-Field Interaction and the Binding of Light in Photonic Crystals [PDF]
, 1997 We solve for the exact atom-field eigenstates of a single atom in a three dimensional spherical cavity, by mapping the problem onto the anisotropic Kondo model.
Allen +22 more
core +2 more sources
Imaging gigahertz zero-group-velocity Lamb waves [PDF]
Nature Communications, 2019 AbstractZero-group-velocity (ZGV) waves have the peculiarity of being stationary, and thus locally confining energy. Although they are particularly useful in evaluation applications, they have not yet been tracked in two dimensions. Here we image gigahertz zero-group-velocity Lamb waves in the time domain by means of an ultrafast optical technique ...
Qingnan Xie +7 more
openaire +4 more sources
Finite nuclear size and Lamb shift of p-wave atomic states [PDF]
, 2002 We consider corrections to the Lamb shift of p-wave atomic states due to the finite nuclear size (FNS). In other words, these are radiative corrections to the atomic isotop shift related to FNS.
A. I. Milstein +18 more
core +2 more sources
Electronics Letters, 1987 A graphic sensor based on the measurement of the propagation time of an acoustic wave train is described. Lamb waves are launched in a plate of ordinary glass by piezoelectric bars bonded to the edges of the plate. They are detected at their arrival under the tip of the drawing pencil by a small piezoelectric disc placed in the pencil body.
E. Dieulesaint +3 more
openaire +1 more source