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Characterization of the 3Dimension optical, geometrical, and mechanical profiles of iPP fiber with necking deformation
Author(s) -
Ali A. M.,
Felemban Nuha,
ElBakary M. A.
Publication year - 2018
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.23033
Subject(s) - necking , materials science , deformation (meteorology) , composite material , stress (linguistics) , characterization (materials science) , optical fiber , fiber , stress–strain curve , optics , nanotechnology , philosophy , linguistics , physics
We present a method for evaluating the 3D refractive indices and 3D true stress and/or 3D true strain profiles of “isotactic polypropylene iPP” fibers during necking deformation. Observing the changes in geometrical shape during the deformation process is necessary to understand the mechanical performance of iPP fibers. 3D geometric shape profile and actual stress and strain profiles were measured for iPP fibers during the propagation of neck deformation. These measurements were performed with the aid of an in‐situ opto‐ mechanical device to dynamically characterize different properties of fibers at different strain rates. A software image analysis program was used to calculate the 3D opto‐mechanical properties of iPP fibers. The obtained results show that the used dynamic stretching device can be easily used to monitor the deformation process with high accuracy. The effective stress and strain can be determined from the filaments profile. For illustration microinterferograms are given.