Speckle-shearing interferometric technique: A full-field strain gauge

Y. Y. Hung; R. E. Rowlands; I. M. Daniel

doi:10.1364/AO.14.000618

Speckle-shearing interferometric technique: A full-field strain gauge

Y. Y. Hung, R. E. Rowlands, I. M. Daniel

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

An improved speckle-shearing interferometric method is presented that allows simultaneous determination of derivatives of surface displacements of a structure with respect to four different directions. The technique relaxes several limitations associated with conventional interferometry and thus is adaptable to nonlaboratory environments. The relevant theory is presented, and the method demonstrated by determining spatial derivatives of in-plane and out-of-plane displacements of statically loaded and vibrated structures.

Original language	English (US)
Pages (from-to)	618-622
Number of pages	5
Journal	Applied optics
Volume	14
Issue number	3
DOIs	https://doi.org/10.1364/AO.14.000618
State	Published - Mar 1975

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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abstract = "An improved speckle-shearing interferometric method is presented that allows simultaneous determination of derivatives of surface displacements of a structure with respect to four different directions. The technique relaxes several limitations associated with conventional interferometry and thus is adaptable to nonlaboratory environments. The relevant theory is presented, and the method demonstrated by determining spatial derivatives of in-plane and out-of-plane displacements of statically loaded and vibrated structures.",

author = "Hung, {Y. Y.} and Rowlands, {R. E.} and Daniel, {I. M.}",

year = "1975",

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N2 - An improved speckle-shearing interferometric method is presented that allows simultaneous determination of derivatives of surface displacements of a structure with respect to four different directions. The technique relaxes several limitations associated with conventional interferometry and thus is adaptable to nonlaboratory environments. The relevant theory is presented, and the method demonstrated by determining spatial derivatives of in-plane and out-of-plane displacements of statically loaded and vibrated structures.

AB - An improved speckle-shearing interferometric method is presented that allows simultaneous determination of derivatives of surface displacements of a structure with respect to four different directions. The technique relaxes several limitations associated with conventional interferometry and thus is adaptable to nonlaboratory environments. The relevant theory is presented, and the method demonstrated by determining spatial derivatives of in-plane and out-of-plane displacements of statically loaded and vibrated structures.

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ER -

Speckle-shearing interferometric technique: A full-field strain gauge

Abstract

ASJC Scopus subject areas

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