BibliotecaPortal de investigación
es | en | GAL
  • Inicio
  • Contact us
  • Give feedback
  • Help
    • About Investigo
    • Search and Find
    • Submit
    • Intellectual Property
    • Open Access Policy
  • Links
    • Sherpa / Romeo
    • Dulcinea
    • OpenDOAR
    • Dialnet Plus
    • ORCID
    • Creative Commons
    • UNESCO Nomenclature
    • español
    • English
    • Gallegan
JavaScript is disabled for your browser. Some features of this site may not work without it.
All of InvestigoAuthorsTitles Materias Unesco Research GroupsType of ContentsJournal TitlesThis CollectionAuthorsTitlesUNESCO SubjectsResearch GroupsType of ContentsJournal Titles

Depositar

Guía de autoarchivo (en construcción)Solicitar permiso a una editorial

Statistics

View Usage Statistics

Video visualization of the dispersive behaviour of Rayleigh and Lamb wavetrains by double-pulsed TV holography

Deán Ben, José LuisAutor UVIGO; Trillo Yáñez, María CristinaAutor UVIGO; Fernández Doval, Ángel ManuelAutor UVIGO; Fernández Fernández, José LuisAutor UVIGO
Date: 2008-06-04
UNIVERSAL IDENTIFIER: http://hdl.handle.net/11093/235
EDITED VERSION: http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.803003
UNESCO SUBJECT: 3311.11 Instrumentos Opticos ; 2209.07 Holografía ; 2201.09 Ultrasonidos
DOCUMENT TYPE: conferenceObject

Abstract

In this work we present an application of TV holography to the generation of movies showing the propagation of acoustic guided waves in aluminium plates. Each movie shows a wavetrain whose envelope (i.e., the acoustic amplitude) and carrier wave move at the group and phase velocities, respectively. In particular, we use the S0 Lamb mode and the Rayleigh wave to illustrate the behaviour of dispersive and non-dispersive waves. Both wavetrains were generated by means of the classical wedge method and detected with our double-pulsed TV holography system, which renders 2D maps of the instantaneous out-of-plane displacement fields of the plate surface. The snapshots of the movie are obtained from a set of these 2D measurements, taken under repeatability conditions by successively increasing the delay between generation and detection. Then, a processing based on the 3D-FFT is applied to the set; the result is a new set of complex maps that permits to characterize the evolution of the positions of the envelope centre and of a point with a given value of the phase, so that it is possible to compare the phase and group velocities of the wavetrain.
Show full item record

Files in this item

[PDF]
Name:
dean08_70980L.pdf
Size:
2.130Mb
Format:
PDF
View/Open

El Repositorio Institucional de la Universidade de Vigo Investigo se difunden en:

INFORMACIÓN
+34 986 913 921
investigo@uvigo.es

Accesibilidad | Aviso legal | Protección de datos
Logo UVigo

INFORMACIÓN
+34 986 812 000
informacion@uvigo.es

CONTACTO

CAMPUS DO MAR

CAMPUS DE OURENSE
+34 988 387 102
Campus da Auga

CAIXA DE QUEIXAS, SUXESTIÓNS E PARABÉNS

TRANSPARENCIA

CAMPUS DE PONTEVEDRA
+34 986 801 949
Campus CREA

OUTRAS WEBS INSTITUCIONAIS

EMERXENCIAS

CAMPUS DE VIGO
+34 986 812 000
Campus Vigo Tecnolóxico

MURO SOCIAL