Results 11 to 20 of about 335,890 (336)

Formation mechanism of SH guided wave in weld seam

open access: yesResults in Physics, 2020
Shear horizontal (SH)-guided wave detection of weld seams is a new type of weld detection technology. To better apply SH-guided waves to weld detection, it is necessary to study the formation mechanism of SH-guided waves and to identify weld structures ...
Xiaolong Zhang, Zhenying Xu
doaj   +1 more source

Surface Acoustic Wave (SAW) Sensors: Physics, Materials, and Applications

open access: yesSensors, 2022
Surface acoustic waves (SAWs) are the guided waves that propagate along the top surface of a material with wave vectors orthogonal to the normal direction to the surface.
Debdyuti Mandal, Sourav Banerjee
doaj   +1 more source

Numerical simulation of high frequency guided wave testing for anchor bolt defects

open access: yesMeitan kexue jishu, 2023
Previous research has confirmed that only high-frequency guided waves larger than 1 MHz have the minimum attenuation detection mode for anchor bolt widely used in underground projects.
Yanyu GUO, Changsuo ZHANG, Yue ZHANG
doaj   +1 more source

Defect Detection and Imaging in Composite Structures Using Magnetostrictive Patch Transducers

open access: yesSensors, 2023
The use of thin magnetostrictive patches to generate and detect guided waves within the composite samples is investigated for defect detection. This approach has been implemented using SH0 shear horizontal guided waves in both CFRP and GFRP plates.
Akram Zitoun   +3 more
doaj   +1 more source

Guided Modes in Negative Refractive Index Waveguides [PDF]

open access: yes, 2002
We study linear guided waves propagating in a slab waveguide made of a negative-refraction- index material, the so-called left-handed waveguide. We reveal that the guided waves in left-handed waveguides possess a number of peculiar properties, such as ...
Andrey A. Sukhorukov   +20 more
core   +2 more sources

A Metacoupler for Converting Propagating Waves to Guided Waves in Wire Waveguides

open access: yesIEEE Photonics Journal, 2017
Propagating electromagnetic waves in free space cannot directly couple to guided waves in waveguides due to momentum mismatch. Here, we propose a method to design a metacoupler that can convert propagating waves into guided waves along wire waveguides in
Hongchen Chu, Jie Luo, Yun Lai
doaj   +1 more source

Guided solitary waves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1980
Transversely periodic solitary-wave solutions of the Boussinesq equations (which govern wave propagation in a weakly dispersive, weakly nonlinear physical system) are determined. The solutions for negative dispersion (e.g., gravity waves) are singular and therefore physically unacceptable. The solutions for positive dispersion (e.g., capillary waves or
openaire   +2 more sources

Propagating transverse waves in soft X-ray coronal jets [PDF]

open access: yes, 2009
Aims. The theoretical model for magnetohydrodynamic (MHD) modes guided by a field-aligned plasma cylinder with a steady flow is adapted to interpret transverse waves observed in solar coronal hot jets, discovered with Hinode/XRT in terms of fast ...
Alexander   +31 more
core   +1 more source

Universal diagrams for te waves guided by thin films bounded by saturable nonlinear media [PDF]

open access: yes, 1993
It is shown that universal V-b diagrams provide a powerful tool when analyzing the stationary waveguiding properties of the TE waves guided by a thin film bounded by a saturable nonlinear substrate or cladding.
Pérez Torres, Juan   +1 more
core   +2 more sources

Elastic Properties Measurement Using Guided Acoustic Waves

open access: yesSensors, 2021
Nondestructive evaluation of elastic properties plays a critical role in condition monitoring of thin structures such as sheets, plates or tubes. Recent research has shown that elastic properties of such structures can be determined with remarkable ...
Viktor Fairuschin   +3 more
doaj   +1 more source

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