Results 21 to 30 of about 86,062 (308)

The mode transformation of a T(0,1) guided wave in an elbow pipe and its influence on defect location

open access: yesAIP Advances, 2020
To correct the inaccurate location of elbow pipe defects, our study established an experimental platform for magnetostrictive T(0,1) guided wave detection.
Shengrong Long   +4 more
doaj   +1 more source

Mode control of guided wave in magnetic hollow cylinder using electromagnetic acoustic transducer array

open access: yesNuclear Engineering and Technology, 2015
The aim of this work is to demonstrate a method for exciting and receiving torsional and longitudinal mode guided waves with an electromagnetic acoustic transducer (EMAT) ring array. First of all, a three-dimensional guided wave simulator is developed in
Akinori Furusawa   +2 more
doaj   +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

Axial Stress Measurement of Steel Tubes Using Ultrasonic Guided Waves

open access: yesSensors, 2022
Axially loaded steel tubes are widely used as primary structural members in civil engineering structures. In this paper, a stress measurement method for axially loaded steel tubes is developed based on the linear relationship between the group velocity ...
Siyuan Zhu   +3 more
doaj   +1 more source

Optical Guided Wave Switching [PDF]

open access: yes, 2015
Optical switching is a key functionality for enabling transparent all-optical networks. We present an overview of optical switching devices, based on either optical or electrical control signals, which permit to avoid the necessity of optics-electronics ...
Costantino De Angelis   +7 more
core   +1 more source

Propagation Characteristics and Defect Sensitivity Analysis of Guided Wave From Single Excitation Source in Elbows

open access: yesIEEE Access, 2019
Ultrasonic guided wave has received significant attention in the field of nondestructive testing because of their advantages in detecting the entire wall thickness.
Yu Wang, Xueyi Li
doaj   +1 more source

Superheterodyne-inspired waveguide-integrated metasurfaces for flexible free-space light manipulation

open access: yesNanophotonics, 2022
Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration ...
Wu Geng-Bo   +3 more
doaj   +1 more source

Theoretical mass sensitivity of Love wave and layer guided acoustic plate mode sensors [PDF]

open access: yes, 2002
A model for the mass sensitivity of Love wave and layer guided shear horizontal acoustic plate mode (SH–APM) sensors is developed by considering the propagation of shear horizontally polarized acoustic waves in a three layer system. A dispersion equation
Newton, Michael   +8 more
core   +1 more source

Influence of the Spatial Dimensions of Ultrasonic Transducers on the Frequency Spectrum of Guided Waves

open access: yesSensors, 2017
Ultrasonic guided wave (UGW)-based condition monitoring has shown great promise in detecting, localizing, and characterizing damage in complex systems. However, the application of guided waves for damage detection is challenging due to the existence of ...
Vykintas Samaitis, Liudas Mažeika
doaj   +1 more source

Needle Tip Detection Using Ultrasound Probe for Vertical Punctures: A Simulation and Experimental Study

open access: yesDiagnostics, 2022
Current ultrasound-guided punctures are difficult to perform as they are performed at an angle to the ultrasound image of the affected area, resulting in longer puncture times, lower success rates, and higher unexpected injury rates.
Yuusuke Tanaka   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy