Interferometry

Small amplitude estimation of mechanical vibrations using electronic speckle shearing pattern interferometry

[+] Author Affiliations
F. J. Casillas, A. Da´vila

Centro de Investigaciones en Optica, Loma del Bosque 115 Leo´n, Gto. 37150, Me´xico E-mail: adavila@cio.mx

S. J. Rothberg

Loughborough University, Wolfson School of Mechanical and Manufacturing Engineering, Loughborough Leics. LE11?3TU, United Kingdom

G. Garnica

Centro de Investigaciones en Optica, Loma del Bosque 115 Leo´n, Gto. 37150, Me´xico

Opt. Eng. 43(4), 880-887 (Apr 01, 2004). doi:10.1117/1.1666858
History: Received Jun. 27, 2003; Revised Oct. 24, 2003; Accepted Oct. 27, 2003; Online March 31, 2004
Text Size: A A A

Electronic speckle shearing pattern interferometry (ESSPI) is a technique that has been used for surface strain and vibration analysis, assuming that simple derivatives are obtained by this technique. However, large shears are usually introduced in the interferometer to increase its sensitivity and to analyze small amplitudes of vibration, limiting this technique to the calculation of approximated derivatives. As strain is related to the exact derivative of the in-plane and out-of-plane deformations, the association with the approximated derivatives can result in reduced accuracy in the quantification of strain. We propose the use of a recently developed phase-recovering technique in stroboscopic ESSPI for improving the overall accuracy of the estimated amplitude of vibration. A successful mode comparison is revealed between a controlled ESSPI experiment with a large shear and finite element (FE) modeling. © 2004 Society of Photo-Optical Instrumentation Engineers.

© 2004 Society of Photo-Optical Instrumentation Engineers

Citation

F. J. Casillas ; A. Da´vila ; S. J. Rothberg and G. Garnica
"Small amplitude estimation of mechanical vibrations using electronic speckle shearing pattern interferometry", Opt. Eng. 43(4), 880-887 (Apr 01, 2004). ; http://dx.doi.org/10.1117/1.1666858


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement


  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.