Display options
Cite
Svanbro A, Huntley JM, Davila A. Optimal re-referencing rate for in-plane dynamic speckle interferometry. Appl Opt. 2003;42(2):251-8doi: 10.1364/ao.42.000251.
Svanbro, A., Huntley, J. M., & Davila, A. (2003). Optimal re-referencing rate for in-plane dynamic speckle interferometry. Applied optics, 42(2), 251-8. https://doi.org/10.1364/ao.42.000251
Svanbro, Angelica, et al. "Optimal re-referencing rate for in-plane dynamic speckle interferometry." Applied optics vol. 42,2 (2003): 251-8. doi: https://doi.org/10.1364/ao.42.000251
Svanbro A, Huntley JM, Davila A. Optimal re-referencing rate for in-plane dynamic speckle interferometry. Appl Opt. 2003 Jan 10;42(2):251-8. doi: 10.1364/ao.42.000251. PMID: 12546504.
Copy Download .nbib Format: NLM
Share it on

Appl Opt. 2003 Jan 10;42(2):251-8. doi: 10.1364/ao.42.000251.

Optimal re-referencing rate for in-plane dynamic speckle interferometry.

Applied optics

Angelica Svanbro, Jonathan M Huntley, Abundio Davila

Affiliations

  1. Luleå University of Technology, Division of Experimental Mechanics, 97187 Luleå, Sweden.

PMID: 12546504 DOI: 10.1364/ao.42.000251

Abstract

We investigate experimentally the optimal rate at which the reference speckle pattern should be updated when dynamic speckle interferometry is used to measure transient in-plane displacement fields. Images are captured with a high-speed camera and phase shifting and phase unwrapping are done temporally. For a wide range of in-plane velocities, up to a maximum of 40% of the Nyquist limit, the random errors in the calculated displacement field are minimized by updating the reference speckle pattern after a speckle displacement of 1/10 of the pixel spacing. The technique is applied to measurements of microscale deformation fields within an adhesive joint in a carbon-fiber epoxy composite.

Publication Types