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    Author(s): Athanasios Iliopoulos; John G. Michopoulos; John C. Hermanson
    Date: 2013
    Source: In: Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, August 4-7, 2013, Portland, OR, IDETC/CIE 2013, DETC/CIE2013-13015. 11 p.
    Publication Series: Full Proceedings
    Station: Forest Products Laboratory
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    Description

    Direct Strain Imaging accomplishes full field measurement of the strain tensor on the surface of a deforming body, by utilizing arbitrarily oriented engineering strain measurements originating from digital imaging. In this paper an evaluation of the method’s performance with respect to its operating parameter space is presented along with a preliminary validation based on actual experiments on composite material specimens under tension. It has been shown that the method exhibits excellent accuracy characteristics and outperforms methods based on displacement differentiation.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Iliopoulos, Athanasios; Michopoulos, John G.; Hermanson, John C. 2013. Performance Analysis and Experimental Validation of the Direct Strain Imaging Method. In: Proceedings of the ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, August 4-7, 2013, Portland, OR, IDETC/CIE 2013, DETC/CIE2013-13015. 11 p.

    Keywords

    full-field measurement, digital imaging, machine vision, multiaxial testing, displacement derivative

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