Application of speckle shearing interferometry to the evaluation of creep strain in elastomers

Juan Benito Pascual-Francisco; Alexandre Michtchenko; Orlando Susarrey-Huerta; Omar Barragán-Pérez; Antonio de Jesús Ortiz-Gonzáles

doi:10.1117/12.2277427

16 October 2017 Application of speckle shearing interferometry to the evaluation of creep strain in elastomers

Juan Benito Pascual-Francisco, Alexandre Michtchenko, Orlando Susarrey-Huerta, Omar Barragán-Pérez, Antonio de Jesús Ortiz-Gonzáles

Author Affiliations +

Proceedings Volume 10448, Optifab 2017; 104481Q (2017) https://doi.org/10.1117/12.2277427
Event: SPIE Optifab, 2017, Rochester, New York, United States

Abstract

In this paper, authors present a new application of speckle shearing interferometry (shearography) to a phenomenon known as creep compliance, which is an important mechanical property of viscoelastic materials. Two different sealing elastomers were tested in a short-term creep experiment, applying a constant tensile stress to a specimen. An experimental in-plane shearography setup was implemented to measure directly the in-plane creep strains produced in the tested object. In order to show the effectiveness of shearography for the assessment of this mechanical property, results were compared to that obtained with an equipment of Digital Image Correlation (DIC). It was demonstrated that shearography can be potentially and successfully applied to the creep analysis of these kind of materials. Finally, advantages and limitations of this measurement method are discussed.

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Juan Benito Pascual-Francisco, Alexandre Michtchenko, Orlando Susarrey-Huerta, Omar Barragán-Pérez, and Antonio de Jesús Ortiz-Gonzáles "Application of speckle shearing interferometry to the evaluation of creep strain in elastomers", Proc. SPIE 10448, Optifab 2017, 104481Q (16 October 2017); https://doi.org/10.1117/12.2277427

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