Results 11 to 20 of about 167,510,774 (241)

Time-dependent analysis of continuous precast prestressed concrete beams. [PDF]

open access: yes, 1999
A literature survey on the subject of construction, analysis and design of precast prestressed concrete beams made continuous has been conducted from which various methods of achieving continuity between the precast units have been identified.
Jaafar, Mohd Saleh
core   +6 more sources

Damage detections in nonlinear vibrating thermally loaded plates [PDF]

open access: yes, 2009
In this work, geometrically nonlinear vibrations of fully clamped rectangular plates subjected to thermal changesare used to study the sensitivity of some vibration response parameters to the presence of damage and elevated temperature. The geometrically
Trendafilova, Irina   +3 more
core   +4 more sources

Multi-Dimensional Physical-Layer Security via Digitally Mediated Space-Time Modulation. [PDF]

open access: yesAdv Sci (Weinh)
Digitally mediated space–time modulation moves radiation control beyond hardware‐bound switching. Multiple information‐bearing and masking waveforms are jointly synthesized at baseband and coherently coupled to simple periodic time modulation, enabling programmable, independently directed multi‐beam radiation without increasing switching‐state ...
Chen K   +8 more
europepmc   +2 more sources

A comparison of the influence of nonlinear and linear creep on the behaviour of FRP-bonded metallic beams at warm temperatures

open access: yesComposite structures, 2021
This study investigates whether it is necessary to consider nonlinear (rather than linear) adhesive viscoelasticity when considering the behaviour of an FRP-bonded metallic beam at warm service temperatures (25°C, 30°C and 40°C).
S. Wang, T. Stratford, T. Reynolds
semanticscholar   +1 more source

Scattering of generalized Bessel beams simulated with the discrete dipole approximation

open access: yesJournal of Physics, Conference Series, 2021
We consider the simulation of scattering of the high-order vector Bessel beams in the discrete dipole approximation framework (DDA). For this purpose, a new general classification of all existing Bessel beam types was developed based on the superposition
S. A. Glukhova, M. Yurkin
semanticscholar   +1 more source

Transient vibration analysis of a completely free plate using modes obtained by Gorman's superposition method [PDF]

open access: yes, 2010
This paper shows that the transient response of a plate undergoing flexural vibration can be calculated accurately and efficiently using the natural frequencies and modes obtained from the superposition method.
Ilanko, Sinniah, Yusuke, Mochida
core   +1 more source

Large amplitude vibrations and damage detection of rectangular plates [PDF]

open access: yes, 2008
In this work, geometrically nonlinear vibrations of fully clamped rectangular plates are used to study the sensitivity of some nonlinear vibration response parameters to the presence of damage.
Trendafilova, I., Manoach, Emil
core   +4 more sources

Continuity development between precast beams using prestressed slabs, and its effect on flexure and shear [PDF]

open access: yes, 1989
Development of continuity between precast prestressed bridge girders by post-tensioning the insitu top slab In the regions of hogging moment is a relatively new technique which forms the basis for this research study.
Jayanandana, Aluthjage Don Chandrathilaka
core   +7 more sources

Coherent full polarization control based on bound states in the continuum

open access: yesNature Communications, 2022
Bound states in the continuum (BICs) are resonant modes of open structures that do not suffer damping, despite being compatible with radiation in terms of their momentum.
Ming Kang   +7 more
semanticscholar   +1 more source

Measuring Parallelism for Two Thin Parallel Beams Based on Autocollimation Principle

open access: yes, 2014
In order to measure the parallelism of two thin parallel beams in multi-axis interferometers and differential interferometers, the autocollimation principle was used by locating a CCD at the focal plane of collimation lens, the two beams converge on CCD ...
Zhengang Lu   +4 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy