Results 21 to 30 of about 8,799 (301)

Modeling the Effect of Anisotropy in Ultrasonic-Guided Wave Tomography [PDF]

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022
Most of the existing ultrasonic-guided wave tomography approaches to map structural changes in plate-like waveguides are based on the assumption of an isotropic material model. However, there are many other engineering applications that are made of anisotropic materials and structures.
Madis Ratassepp   +3 more
openaire   +2 more sources

On the Piezoelectric Detection of Guided Ultrasonic Waves [PDF]

open access: yesMaterials, 2017
In order to quantify the wave motion of guided ultrasonic waves, the characteristics of piezoelectric detectors, or ultrasonic transducers and acoustic emission sensors, have been evaluated systematically. Such guided waves are widely used in structural health monitoring and nondestructive evaluation, but methods of calibrating piezoelectric detectors ...
openaire   +4 more sources

Shear-horizontal guided wave tomography [PDF]

open access: yes, 2022
The petrochemical industry’s pipe-network is increasingly suffering from corrosion-induced shutdowns and thus a quantitative measurement approach is vital for making adequate service-life predictions and to guarantee safety. At pipe-supports, access is
Zimmermann, Andreas Armin Ernst
core   +1 more source

Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

open access: yesSensors, 2009
Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper.
Fucai Li   +3 more
doaj   +1 more source

The Study of Non-Detection Zones in Conventional Long-Distance Ultrasonic Guided Wave Inspection on Square Steel Bars

open access: yesApplied Sciences, 2018
In a low-frequency ultrasonic guided wave dual-probe flaw inspection of a square steel bar with a finite length boundary, the flaw reflected pulse wave cannot be identified using conventional time monitoring when the flaw is located near the reflection ...
Lei Zhang   +3 more
doaj   +1 more source

Ultrasonic metal sheet thickness measurement without prior wave speed calibration [PDF]

open access: yes, 2013
Conventional ultrasonic mensuration of sample thickness from one side only requires the bulk wave reverberation time and a calibration speed. This speed changes with temperature, stress, and microstructure, limiting thickness measurement accuracy ...
Dixon, S.   +4 more
core   +1 more source

Design and Implementation of an Electronic Front-End Based on Square Wave Excitation for Ultrasonic Torsional Guided Wave Viscosity Sensor

open access: yesSensors, 2016
The market for process instruments generally requires low cost devices that are robust, small in size, portable, and usable in-plant. Ultrasonic torsional guided wave sensors have received much attention by researchers for measurement of viscosity and/or
Amir Rabani
doaj   +1 more source

On the scattering of longitudinal elastic waves from axisymmetric defects in coated pipes [PDF]

open access: yes, 2013
This is the post-print version of the final paper published in Journal of Sound and Vibration. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural ...
Mudge, P, Zlatev, Z, Kirby, R
core   +1 more source

On the scattering of torsional elastic waves from axisymmetric defects in coated pipes [PDF]

open access: yes, 2012
This is the post-print version of the Article - Copyright @ 2012 ElsevierLong range ultrasonic testing is now a well established method for examining in-service degradation in pipelines.
Mudge, P, Zlatev, Z, Kirby, R
core   +1 more source

Signal Enhancement Technology Based on Ultrasonic Guided Wave Rail Bottom Crack Detection

open access: yesChengshi guidao jiaotong yanjiu
[Objective] During the propagation of guided waves in rails, there are problems of poor anti-interference ability and severe signal attenuation, which hinder the identification of rail bottom cracks.
HE Jiping   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy