Results 51 to 60 of about 686,620 (189)

Damage Monitoring of Steel Bars Based on Torsional Guided Waves

open access: yesSensors
Ultrasonic guided waves represent a new development in the field of non-destructive testing. Longitudinal guided waves are mostly used to monitor the damage of steel bars, but the received signal is usually degraded and noisy owing to its dispersive ...
Zhupeng Zheng, Zihao Zhang, Cheng Huang
doaj   +1 more source

Propagation of elastic waves in DNA

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
The mathematical analyses of longitudinal and torsional elastic waves transmitted along DNA molecule undergoing Brownian motion in solution are presented.
Sunil Mukherjee   +3 more
doaj   +1 more source

The effect of a hypocycloid irregularity on torsional surface waves in a multilayer system [PDF]

open access: yesTheoretical and Applied Mechanics
The present topic is devoted to investigating the effects of semi four-cusped hypocycloid irregularity on torsional surface waves in an initially stressed anisotropic porous medium situated between two anisotropic nonhomogeneous semi-infinite spaces. The
Saha Anup, Das Sandip Kumar
doaj   +1 more source

Research Paper: Shocks and Energy Transfer in Solar Atmospheric Jets [PDF]

open access: yesفیزیک کاربردی ایران
The aim is to study nonlinear wave dynamics in solar spicules and jets. The life of jets in the context of Alfven wave dynamics is focused. Here, further insight into the solar atmospheric effects together with initial conditions on the dynamics of ...
Zohre Hashemipour   +2 more
doaj   +1 more source

General-relativistic wave–particle duality with torsion

open access: yesClassical and Quantum Gravity
Abstract We propose that the four-velocity of a Dirac particle is related to its relativistic wave function by u i =
Francisco Ribeiro Benard Guedes   +1 more
openaire   +3 more sources

Dispersion behavior of torsional guided waves in a small diameter steel gas pipe

open access: yes, 2013
Condition monitoring of gas pipes has been an important issue for gas companies. Failure to accurately identify condition of gas pipes result in numerous problems. Also, producing a condition monitoring system for buried pipelines is challenging.
Humphrey, V.   +2 more
core   +1 more source

Influence of gravity on torsional surface waves in a dissipative medium

open access: yesGeofísica Internacional, 2021
El presente artículo trata sobre las posibilidades de propagación de ondas superficiales torsionales en un medio viscoelástico bajo campo de gravedad.
Asit Kumar Gupta, Pulak Patra
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

Synthetic Fe XIII 1074.7 nm Observations of Torsional Alfvén Waves in Coronal Waveguides

open access: yesThe Astrophysical Journal
Torsional Alfvén waves are a promising mechanism for transporting energy through the solar atmosphere, with implications for coronal heating and solar wind acceleration. Recently, signatures of torsional Alfvén waves have been observed with the Daniel K.
Samuel J. Skirvin   +2 more
doaj   +1 more source

Torsional wave propagation in an inhomogeneous crustal layer over an inhomogeneous elastic half space

open access: yesJournal of the Mechanical Behavior of Materials, 2015
The present study considers the propagation of torsional wave in an inhomogeneous crustal layer over an inhomogeneous half space when the upper boundary plane is assumed to be rigid.
Kakar Rajneesh, Gupta Kishan Chand
doaj   +1 more source

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