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Use of 3D Scanning Laser Vibrometer for Full Field Strain Measurements

  • Jesus M. ReyesEmail author
  • Peter Avitabile
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

A relatively new technique to identify full field strain uses extensions of a 3D scanning laser vibrometer measurement. The technique was studied on several structures to understand the benefits and usefulness of the technique. One structure is a simple cantilevered beam which can be used to study the results of the 3D scanning laser vibrometer and quantify the results with a well-known solution. The other structure is a wind turbine blade which is more complicated in geometry and strain distributions. The two structures are subjected to dynamic testing and the results of the 3D scanning laser vibrometer are compared to strain gage results. Each of the sets of results are discussed and compared. The advantages and limitation of the technique are discussed in the paper.

Keywords

3D scanning laser Doppler vibrometer Dynamic strain measurements Strain gages Wind turbine blade Experimental techniques 

Notes

Acknowledgements

Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the particular funding agency. The authors are grateful for the support obtained.

The support given by La Secretaria de Educación Publica, El Gobierno Mexicano, El Consejo Nacional de Ciencia y Tecnología CONACYT and La Universidad Autónoma de Sinaloa to the first author is appreciated.

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Copyright information

© The Society for Experimental Mechanics, Inc. 2015

Authors and Affiliations

  1. 1.Structural Dynamics and Acoustic Systems LaboratoryUniversity of Massachusetts LowellLowellUSA

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