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Title: Performance Analysis and Experimental Validation of the Direct Strain Imaging Method

Author: Iliopoulos, Athanasios; Michopoulos, John G.; Hermanson, John C.;

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

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.

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

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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.

 


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