Journal ArticleDOI
Photoelastic characterization of shear-bands in mechanically stretched polymeric fibers
TLDR
In this article, the effect of different parameters, such as the stretching rates and ambient temperature on the formation of shear bands is investigated, and the influence of heating pre-existed shear band is studied.Abstract:
In this work, the shear bands formed during the stretching of isotactic polypropylene fibers are studied. The digital photoelasticity technique is applied to provide full-field visualization of the stress of the shear bands regions. The mechanical testing device is modified to be suitable for mechanical measurements. The effect of different parameters, that is, the stretching rates and the ambient temperature on the formation of shear bands is investigated. Finally, the influence of heating pre-existed shear bands is studied. Photoelastic patterns of the shear bands at these conditions are included for illustration.read more
Citations
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Journal ArticleDOI
Algorithm and its application for automatic measurement of the full-field isoclinic parameter by digital phase-shifting photoelasticity.
TL;DR: In this article , the photoelastic phase-shifting technique is used to assess isoclinic and isochromatic parameters, which affect each other, seriously hindering the development of the phaseshifting photo-elasticity method.
Journal ArticleDOI
Characterization of the dynamic stretching stages of polymeric fibers using dispersion measurements.
TL;DR: In this article , the dynamics of the molecular chains at different stages of stretching polymeric monofilament fibers are characterized using a single-shot pattern, which is performed for the first time, to the best knowledge.
References
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MonographDOI
Introduction to Physical Polymer Science: Sperling/Introduction to Physical Polymer Science, Fourth Edition
Journal ArticleDOI
The competition between shear deformation and crazing in glassy polymers
TL;DR: In this paper, the authors examined the competition between shear deformation and crazing in thin films of polystyrene-acrylonitrile co-polymers and polymer blends.
Journal ArticleDOI
Towards RGB photoelasticity: Full-field automated photoelasticity in white light
TL;DR: A new full-field method for the automatic analysis of isochromatic fringes in white light, named RGB photoelasticity, which makes it possible to determine retardations uniquely in the range of 0–3 fringe orders.
Journal ArticleDOI
A Double Refracting Interference Microscope with Continuously Variable Amount and Direction of Wavefront Shear
TL;DR: In this paper, a double refracting interference microscope, which is capable of giving uniform and fringe interference field with both the amount and direction of image duplication continuously variable, has been developed.
Journal ArticleDOI
Digital photoelasticity – A comprehensive review
TL;DR: This review thematically classifies all the developments in digital photoelasticity and highlights the relative merits and drawbacks of the various techniques to allow an end-user to make an informed choice on the type of technique to be used in a particular situation.