Use of the two channels method to determine the guided waves damping coefficients of an asymmetrically fluid‐loaded plate: Theory and experiment

2001 ◽  
Vol 110 (5) ◽  
pp. 2683-2683
Author(s):  
Ech‐Cherif El‐Kettani Mounsif ◽  
Franklin Herve
Keyword(s):  
Guided Waves ◽  
Plate Theory ◽  
Damping Coefficients ◽  
Loaded Plate ◽  
Theory And Experiment

Correction: Natural Frequencies of a Heated Plate: Theory and Experiment

AIAA Journal ◽  
2021 ◽  
pp. 1-1
Author(s):  
Maxim Freydin ◽  
Dani Levin ◽  
Earl H. Dowell ◽  
Santosh Vaibhav Varigonda ◽  
Venkateswaran Narayanaswamy
Keyword(s):  
Natural Frequencies ◽  
Plate Theory ◽  
Heated Plate ◽  
Theory And Experiment

scholarly journals Realization of mutually unbiased bases for a qubit with only one wave plate: theory and experiment

2015 ◽  
Vol 23 (8) ◽  
pp. 10018 ◽  
Author(s):  
Zhibo Hou ◽  
Guoyong Xiang ◽  
Daoyi Dong ◽  
Chuan-Feng Li ◽  
Guang-Can Guo
Keyword(s):  
Plate Theory ◽  
Mutually Unbiased Bases ◽  
Wave Plate ◽  
Theory And Experiment

Towards the Development of Predictive Models for the System Design and Modal Analysis of Acoustic Emission Based Technologies

2012 ◽  
Vol 518 ◽  
pp. 396-406 ◽  
Author(s):  
Miguel Angel Torres-Arredondo ◽  
H. Jung ◽  
Claus Peter Fritzen
Keyword(s):  
Acoustic Emission ◽  
Wave Propagation ◽  
Modal Analysis ◽  
Health Monitoring ◽  
Guided Waves ◽  
Lamb Waves ◽  
Plate Theory ◽  
Predictive Modelling ◽  
Diagnostic Techniques ◽  
Acoustic Energy

Acoustic Emission (AE) techniques are used for the structural health monitoring (SHM) of civil, aeronautic and aerospace structures. In order to depart from the traditional reliance on parameter based analysis, AE diagnostic techniques require the analysis of wave propagation phenomena and the use of predictive modelling tools to improve the monitoring capabilities and provide reliable health monitoring. Additionally, modal based techniques offer potential for optimization of sensor networks in terms of sensor placement and number of sensors, increased source location accuracy and to get an insight into the source mechanisms. If the modes of propagation can be recognised in the received AE signals, then it would be possible to discriminate between damage types. On that account, the present paper develops two methodologies that are useful tools for the investigation and design of wave propagation based SHM systems established upon modal analysis. Firstly, a higher order plate theory for modelling disperse solutions in elastic and viscoelastic fibre-reinforced composites is proposed in order to investigate the radiation and attenuation of Lamb waves in anisotropic media. Second, spectral flat shell elements are used for the simulation of guided waves in shell structures. Numerical simulations and experiments validate the models and demonstrate that material anisotropy has a strong influence on the velocities, attenuation and acoustic energy for the different modes of propagation. It is expected that the presented methodologies may contribute to offer a higher computational efficiency and simplicity in comparison to traditional methods, and enable the design shortening time and cost of development of Lamb wave based damage detection systems for a rapid transfer from laboratory to in-service structures.

scholarly journals Numerical Investigation of Unsteady Subsonic Compressible Flows Through an Oscillating Cascade

1986 ◽  
Author(s):  
T. H. Fransson ◽  
M. Pandolfi
Keyword(s):  
Phase Angle ◽  
Compressible Flows ◽  
Subsonic Flow ◽  
Aerodynamic Force ◽  
Plate Theory ◽  
Time Dependent ◽  
Periodicity Condition ◽  
Damping Coefficients ◽  
Flow Through ◽  
Interblade Phase Angle

A method for solving numerically the fully time-dependent two-dimensional Euler equations, applied to unsteady subsonic flow through vibrating turbomachine cascades with thin blades, is developed. The blades are assumed to vibrate at a constant interblade phase angle and the computed region is reduced to one blade passage, with the implementation of the interblade phase angle as a periodicity condition. The reliability of the method is validated by comparing it with an analytical flat plate theory, and the importance of radiative inlet and outlet boundary conditions for unsteady flow calculations is shown in an example. The method can be used to compute the aerodynamic force and damping coefficients acting on the blades and to investigate the propagation of unsteady disturbances through a cascade in flutter conditions.

Expansion tube with nozzle plate - Theory and experiment

AIAA Journal ◽  
1975 ◽  
Vol 13 (10) ◽  
pp. 1398-1400
Author(s):  
F. H. Oertel ◽  
N. Gerber ◽  
J. M. Bartos
Keyword(s):  
Plate Theory ◽  
Expansion Tube ◽  
Nozzle Plate ◽  
Theory And Experiment

scholarly journals Natural Frequencies of a Heated Plate: Theory and Experiment

AIAA Journal ◽  
2020 ◽  
Vol 58 (11) ◽  
pp. 4969-4973 ◽  
Author(s):  
Maxim Freydin ◽  
Dani Levin ◽  
Earl H. Dowell ◽  
Santosh Vaibhav Varigonda ◽  
Venkateswaran Narayanaswamy
Keyword(s):  
Natural Frequencies ◽  
Plate Theory ◽  
Heated Plate ◽  
Theory And Experiment

Transient waves in an elastic plate: Theory and experiment compared

1983 ◽  
Vol 74 (6) ◽  
pp. 1905-1907 ◽  
Author(s):  
T. M. Proctor ◽  
F. R. Breckenridge ◽  
Y. H. Pao
Keyword(s):  
Elastic Plate ◽  
Plate Theory ◽  
Transient Waves ◽  
Theory And Experiment
Sign in / Sign up

Export Citation Format

Share Document