Results 41 to 50 of about 21,974 (265)

Finite Element Model Updating of Axisymmetric Structures

open access: yesApplied Sciences
Creating the most accurate numerical models with the same dynamic behavior as real structures plays an important role in the development process of various facilities.
Pavol Lengvarský   +3 more
doaj   +1 more source

Dynamic Strain Measurements on Automotive and Aeronautic Composite Components by Means of Embedded Fiber Bragg Grating Sensors

open access: yesSensors, 2015
The measurement of the internal deformations occurring in real-life composite components is a very challenging task, especially for those components that are rather difficult to access. Optical fiber sensors can overcome such a problem, since they can be
Alfredo Lamberti   +5 more
doaj   +1 more source

Parameter Study of Statistics of Modal Parameter Estimates Using Automated Operational Modal Analysis [PDF]

open access: yes
For any modal parameter estimation (MPE) method, there are a few control inputs that can have an impact on the modal parameter estimates. These control inputs are typically involving parameters like the maximum model order and how many time values or frequency lines that should be included in the MPE.
Christensen, Silas S., Brandt, Anders
openaire   +2 more sources

Performance of Modal Signaling vs. medium dielectric variability [PDF]

open access: yes, 2012
This paper addresses the feasibility of the so-called Modal Signaling (MS) transmission scheme from a stochastic viewpoint. MS has been proposed for crosstalk mitigation over interconnects and is based on the encoding of signals onto fundamental ...
Stievano, Igor Simone   +5 more
core   +1 more source

RESEARCH REGARDING THE MODAL PARAMETERS IDENTIFICATION FOR METALLIC STRUCTURES (I) [PDF]

open access: yesFiabilitate şi Durabilitate, 2012
In this paper, starting from previous methods written by other authors, we present the theoretical background of the modal identification for hyperstatic metallic structures (in an own way).
Dan ILINCIOIU   +2 more
doaj  

On the robustness of the average power ratios in damping estimation: application in the structural health monitoring of composites beams [PDF]

open access: yes, 2010
In composites structures, cracking, delamination will cause changes in the measured dynamic response of structure and so on experimentally modal parameters.
J. Morlier   +4 more
core   +1 more source

Operational modal analysis using symbolic regression for a nonlinear vibration system

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
The existence of nonlinearity is an inevitable frequent occurrence that should be considered to accurately identify the modal parameters of a vibration system using operational modal analysis.
Xuchu Jiang, Feng Jiang
doaj   +1 more source

Research on improved modal parameter identification method using Hilbert-Huang transform

open access: yesMeasurement + Control, 2023
In the wind tunnel test, the full-bridge aeroelastic model needs to simulate both the shape and dynamic characteristics of the real bridge, and modal parameters are key dynamic parameters.
Mingjin Zhang   +4 more
doaj   +1 more source

Distributed Parameter Modal Sensors.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1996
This paper deals with distributed parameter sensors designed with a view to extracting a vibration mode. Compared to conventional point-type sensors such as acceleration pickups, displacement sensors etc., the distributed parameter sensors have many benefits provided that they are properly designed.
TANAKA, Nobuo   +3 more
openaire   +2 more sources

Response of semen parameters to three training modalities [PDF]

open access: yesFertility and Sterility, 2009
To investigate the effect of different training modalities on various markers of semen quality.Crossover study.Medical school.Forty-five men participated voluntarily in the study, being allocated into three groups according to their sports practice.None.Sperm parameters (volume, liquefaction time, pH, viscosity, sperm count, motility, and morphology ...
Vaamonde, Diana   +5 more
openaire   +3 more sources

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