Results 271 to 280 of about 145,304 (328)
Some of the next articles are maybe not open access.
Deep learning-assisted locating and sizing of a coating delamination using ultrasonic guided waves.
UltrasonicsThis article proposes a deep learning-assisted nondestructive evaluation (NDE) technique for locating and sizing a coating delamination using ultrasonic guided waves.
Junzhen Wang +3 more
semanticscholar +1 more source
On the use of ultrasonic guided waves for the health monitoring of rails
Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, 2021This paper deals with the health monitoring of rails. Many nondestructive techniques have been applied to rule on the health of rails. Ultrasonic guided waves (UGWs) technique is one among them. The current study focuses on this technique.
M. Masmoudi +4 more
semanticscholar +1 more source
Ultrasonic guided-waves characterization with warped frequency transforms
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2008Guided wave (GW) dispersion curves can be extracted from a time-transient measurement by means of timefrequency representations (TFRs). Unfortunately, any TFR is subject to the time-frequency uncertainty principle. This, in general, limits the capability of TFRs to characterize closely spaced guided modes over a wide frequency range.
DE MARCHI, LUCA +3 more
openaire +2 more sources
Non-contact ultrasonic guided wave inspection of rails
SPIE Proceedings, 2013The University of California at San Diego (UCSD), under a Federal Railroad Administration (FRA) Office of Research and Development (R&D) grant, is developing a system for high-speed and non-contact rail integrity evaluation. A prototype using an ultrasonic air-coupled guided wave signal generation and air-coupled signal detection, in pair with a ...
Nguyen, T. V. +5 more
openaire +4 more sources
Novel instrument for inspecting rock bolt integrity using ultrasonic guided waves
, 2021Design of an advanced instrument for inspecting rock bolt integrity by means of ultrasonic guided waves is presented. Issues related to features of multimodal and dispersive ultrasonic guided waves used by the instrument are addressed.
T. Stepinski
semanticscholar +1 more source
Condition assessment of timber utility poles using ultrasonic guided waves
, 2021In this study, guided stress waves were used to evaluate the conditions of a timber utility pole experimentally and numerically using COMSOL Multiphysics.
Jad Najjar, S. Mustapha
semanticscholar +1 more source
On the interpolation of ultrasonic guided wave signals
AIP Conference Proceedings, 2012The application of ultrasonic guided wave methods to both nondestructive evaluation (NDE) and structural health monitoring (SHM) is becoming more prevalent as techniques to handle their multi-modal and dispersive nature are developed. There are several applications where it would be not only convenient but perhaps essential to interpolate arrays of ...
Jennifer E. Michaels +3 more
openaire +1 more source
Guided ultrasonic waves in composite cylinders
Mechanics of Composite Materials, 2007The ultrasonic nondestructive evaluation of composite cylinders requires a thorough understanding of the propagation of waves in these materials. In this paper, the propagation of flexural and longitudinal guided waves in fiber-reinforced composite (FRC) rods with transversely isotropic symmetry properties is studied.
F. Honarvar, E. Enjilela, A. N. Sinclair
openaire +1 more source
Guided wave nuances for ultrasonic nondestructive evaluation
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2000Recent developments in guided wave generation, reception, and mode control show that increased penetration power and sensitivity are possible. A tone burst function generator and appropriate signal processing are generally used. Variable angle beam and comb-type transducers are the key to this effort.
openaire +2 more sources
Ultrasonic guided wave vibration formulation
AIP Conference Proceedings, 2012A novel transient-guided-wave-based approach to predicting natural vibration frequencies and mode shapes of a semi-infinite plate has been developed. This theory uses the orthogonal propagating and evanescent guided wave modes to fully satisfy the elasticity structural vibration boundary value problem for the structure.
C. Borigo, F. Yan, Y. Liang, J. L. Rose
openaire +1 more source