1 December 1991 Strain measurements on soft materials application to cloth and papers
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Abstract
We present a non-destructive and non-contact extensometry technique, which has been developed in order to study the behaviour of different materials such as polycarbonate, araldite, urethane... The aim of this article is to propose an original extensometry technique applied to textiles and papers.

A spectral analysis of a crossed grating marked on the surface of a specimen and recorded by a C.C.D. camera is presented. The procedure is based on the use of a bidimensional F.F.T algorithm coupled with an interpolation process. It leads to the accurate determination of frequencies. Numerical simulations indicate that the strain sensitivity is of the same order than the sensitivity given by a strain gage technique.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fabrice J. Bremand, Fabrice J. Bremand, Alexis Lagarde, Alexis Lagarde, } "Strain measurements on soft materials application to cloth and papers", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.57455; https://doi.org/10.1117/12.57455
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