Continuous laser scanning of a lightweight membrane with monotone and multi-tone excitation techniques

Pablo A. Tarazaga, Dario Di Maio, Nima Ameri, David J. Ewins

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

4 Citations (Scopus)

Abstract

Given the lightweight and sensitive nature of gossamer structures, applying non-intrusive and fast testing techniques can be beneficial during either the design stage or in operational conditions. This paper presents the feasibility of using continuous scanning techniques to characterize the operational deflection shapes of a circular lightweight membrane. The experimental results are also compared to an impedance-based model of a circular membrane that takes into account energy loss due to radiation to the far field. The work herein also describes a new technique that uses a multi-tone excitation together with continuous scanning in order to obtain all operation deflection shapes in one single attempt.

Original languageEnglish
Title of host publication53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 2012
DOIs
Publication statusPublished - 26 Apr 2012
Event53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Honolulu, HI, United States
Duration: 23 Apr 201226 Apr 2012

Conference

Conference53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityHonolulu, HI
Period23/04/1226/04/12

Keywords

  • Acoustic radiation
  • Continuous laser doppler vibrometry
  • Gossamer structures
  • Impedance modeling
  • Modal testing
  • Multi- tone excitation

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