Results 11 to 20 of about 27,652 (282)

Analysis of corrugation evolution characteristics based on scale-down tests – contact stick-slip perspective [PDF]

open access: yesRailway Sciences
Purpose – Rail corrugation is still one of the unsolved challenges in the railway industry, and the abnormal vibration and high-frequency noise caused by it constitute serious adverse effects on the operating environment.
Zhiqiang Wang, Pengfei Liu
doaj   +1 more source

Singing Corrugated Pipes [PDF]

open access: yesAmerican Journal of Physics, 1974
A corrugated tube open at both ends, with air flowing through the tube, sings notes which depend on the flow velocity and the length of the tube. The notes it sings are the natural harmonics of the tube. A given note will sing when the flow velocity is such that the “bump frequency” (frequency at which the air bumps into the corrugations) equals the ...
openaire   +2 more sources

Diverse corrugation pattern in radially shrinking carbon nanotubes [PDF]

open access: yes, 2010
Stable cross-sections of multi-walled carbon nanotubes subjected to electron-beam irradiation are investigated in the realm of the continuum mechanics approximation. The self-healing nature of sp$^2$ graphitic sheets implies that selective irradiation of
D. O. Brush   +7 more
core   +4 more sources

Analysis of dispersion and absorption characteristics of shear waves in sinusoidally corrugated elastic medium with void pores [PDF]

open access: yesRoyal Society Open Science, 2017
This theoretical work reports the dispersion and absorption characteristics of horizontally polarized shear wave (SH-wave) in a corrugated medium with void pores sandwiched between two dissimilar half-spaces.
Deepak Kr. Pandit   +2 more
doaj   +1 more source

Design of a 30 GHz bragg reflector for a Raman FEL [PDF]

open access: yes, 1993
A design of a Bragg reflector for a Raman FEL is described. It is shown that mode conversion occurs whenever the axial wavenumbers of the two modes fulfil the Bragg condition.
Slot, P.J.M. van der, Zambon, P.
core   +6 more sources

Orbital dependent electron tunneling within the atom superposition approach: Theory and application to W(110) [PDF]

open access: yes, 2012
We introduce an orbital dependent electron tunneling model and implement it within the atom superposition approach for simulating scanning tunneling microscopy (STM) and spectroscopy (STS).
Mándi, Gábor   +2 more
core   +2 more sources

Evolution of Low-Profile Ultra-Wideband Frequency Selective Surface with a Stable Response and Sharp Roll-Off at Lower Band for C, X and Ku Band Applications [PDF]

open access: yesRadioengineering, 2020
This paper focuses on two different design flows of how an ultra-wideband FSS can be achieved from a narrow band structure. By amalgamating a capacitive patch with a corrugated square slot structure, as the first approach while the second approach ...
A. N. Biswas   +3 more
doaj  

Theoretical analyses of growth mechanism of rail corrugation

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Rail corrugation is a phenomenon in which roughness patterns of approximately regular wavelengths are formed on the rail running surface by trains running, and causes the vibration and the noise.
Mitsuo ABOSHI, Hirofumi TANAKA
doaj   +1 more source

Detection of the Presence of Rail Corrugation Using Convolutional Neural Network

open access: yesEngineering Transactions, 2022
Rail corrugation is a significant problem not only in heavy-haul freight but also in light rail systems. Over the last years, considerable progress has been made in understanding, measuring and treating corrugation problems also considered a matter of ...
Maciej TABASZEWSKI, Bartosz FIRLIK
doaj   +1 more source

Membranes fabricated with a deep single corrugation for package stress reduction and residual stress relief [PDF]

open access: yes, 1993
Thin square membranes including a deep circular corrugation are realized and tested for application in a strain-based pressure sensor. Package-induced stresses are reduced and relief of the residual stress is obtained, resulting in a large pressure ...
Bouwstra, S.   +3 more
core   +2 more sources

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