Results 251 to 260 of about 28,665,543 (293)

Experimental analysis of the modal evolution in photonic lanterns

Optical Fiber Communication Conference, 2017
We experimentally analyze the modal evolution in a 10 mode-selective photonic lantern along the tapered transition using a swept-wavelength interferometer. Mode conversion to HOMs occurs closer to the beginning of the photonic lantern taper.
Juan Carlos Alvarado-Zacarias, Bin Huang, Zeinab Sanjabi Eznaveh, Nicolas K. Fontaine, Haoshuo Chen, Roland Ryf, Jose Enrique Antonio-Lopez, Rodrigo Amezcua Correa   +7 more
openaire   +3 more sources

ESS RFQ Experimental Modal Analysis

2022
The European Spallation Source-ESS, which is currently under construction and commissioning at Lund, Sweden is a neutron source that consists of a 2 GeV linear accelerator (LINAC) accelerating a proton beam to a solid Tungsten (W) target. The proton beam is produced by the Ion Source (ISRC) and transported through the Low Energy Beam Transport (LEBT ...
Trachanas, Emmanouil, Bignami, Andrea, Gazis, Nikolaos, Jones, Bryan   +3 more
openaire   +1 more source

Experimental modal analysis of a synthetic composite femur

Experimental Mechanics, 2004
In this paper we describe the experimental characterization of the modal parameters of a synthetic composite femur model widely used in biomechanical research studies. The objective of the experimental procedure was to identify the natural frequencies and mode shapes of an unconstrained (free-free) femur.
Rodrigues, J. F. Dias, Lopes, H., Melo, F. Q. de, Simões, J. A.   +3 more
openaire   +3 more sources

An Experimental Analysis of Set: The Role of Sense-Modality

The American Journal of Psychology, 1960
In an earlier study we reported the ability of a 'set' to alter the accuracy of reporting about a degraded stimulus-object. It was shown that set could be varied in degree; that its influence depends on the level of ambiguity of the degraded stimulus; and that it may affect discrimination, or interpretation, or it may simply make one response more ...
E R, LONG, R H, HENNEMAN, W D, GARVEY
openaire   +2 more sources

EXPERIMENTAL MODAL ANALYSIS OF LARGE STRUCTURES BY SUBSTRUCTURING

Mechanical Systems and Signal Processing, 1997
Abstract An experimental modal coupling method is investigated by applying it to a large structure tested by parts. The method is based on testing different parts of the structure with their interface coordinates loaded with rigid, heavy dummy masses.
M. Karpel, RICCI, SERGIO
openaire   +2 more sources

Theoretical and Experimental Modal Analysis of a 6 PUS PKM

Proceedings of the 16th International Conference on Informatics in Control, Automation and Robotics, 2019
In this article the modal analysis of a manipulator is presented and discussed from a theoretical and experimental perspective. The work focuses on both the simulation and the experimental stages of the modal analysis on six DOF parallel kinematics machine.
La Mura F., Giberti H., PIROVANO, GIOVANNI LUCA, Tarabini M.   +3 more
openaire   +3 more sources

Experimental modal analysis and modal parameters extraction

2009
A case study approach in the inverse analysis of the modal extraction parameter has been implemented. The Mathematical model has been used to generate time response and random generator to generate added noise. The accuracy of modal parameters extraction techniques to error-contaminated measured data has been assessed for the simple examples.
Lozina, Željan, Sedlar, Damir, Karišik, Edin   +2 more
openaire   +2 more sources

Experimental modal analysis tutorial

The Journal of the Acoustical Society of America
This 2-h session will provide an overview of experimental modal analysis (EMA) emphasizing the use of frequency response functions applied to aerospace engineering applications. After a brief overview of EMA concepts using simple lumped parameter models, this presentation will provide an in-depth review of the steps required in a typical aerospace ...
Kevin Napolitano, Peter Kerrian
openaire   +1 more source

Signal processing for experimental modal analysis

Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2001
Summary: This paper is an overview of signal processing for modal analysis. The approach taken is to summarize some of the types of data that arise in modal analysis, to classify signal processing problems, and to attempt to show the relevance of the latter to the former.
Hammond, Joseph K., Waters, Timothy P.
openaire   +2 more sources

A Technique for Experimental Acoustic Modal Analysis

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1996
A technique developed to carry out experimental acoustic modal analysis using commercially available structural modal analysis software is described. This uses a finite difference calculation to determine the spatial variation in pressure. In order that the resulting function exhibits the same nodes and antinodes as the actual pressure distribution at ...
F R Whear, D Morrey
openaire   +1 more source