Journal ArticleDOI
Experimental investigation of neck propagation in polymers
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TLDR
In this article, the neck propagation for two different thermoplastic polymers (polyethylene and polyethylene terephthalate) at room temperature and at several elongation rates was investigated for axisymmetric and plane strain.About:
This article is published in Polymer.The article was published on 1989-04-01. It has received 44 citations till now. The article focuses on the topics: High-density polyethylene & Polyethylene.read more
Citations
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Video-controlled tensile testing of polymers and metals beyond the necking point
TL;DR: In this paper, the authors used a computer-aided video extensometer to calculate the effective strain and the effective stress in the midplane of hourglass-shaped tensile specimens.
Journal ArticleDOI
Experimental characterization of deformation damage in solid polymers under tension, and its interrelation with necking
TL;DR: In this article, the authors used a video-controlled testing system to determine the evolution of volume strain in polyethylene terephtalate (PET) and high-impact polystyrene (HIPS) by measuring in real time the three principal strain components in a small volume element, while the specimens are deformed under uniaxial tension at constant true strain rate.
Journal ArticleDOI
On neck propagation in amorphous glassy-polymers under plane strain tension
Peidong Wu,van der Erik Giessen +1 more
TL;DR: In this paper, finite element analysis is used to numerically study necking and neck propagation in amorphous glassy polymers under plane strain tension during large strain plastic flow.
Journal ArticleDOI
Multi-scale constitutive modeling of the small deformations of semi-crystalline polymers
TL;DR: In this article, a multi-scale constitutive model for the small deformations of semi-crystalline polymers such as high density polyethylene is presented, where each macroscopic material point is supposed to be the center of a representative volume element which is an aggregate of randomly oriented composite inclusions.
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Rheology of polypropylene in the solid state
TL;DR: In this paper, the tensile behavior of a commercial grade of isotactic polypropylene was tested in a temperature range between 20 and 150 °C with a video-controlled testing system which is capable of imposing a constant true strain-rate within the neck automatically.
References
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Book
Mechanical properties of solid polymers
TL;DR: A concise, self-contained introduction to solid polymers, the mechanics of their behavior and molecular and structural interpretations can be found in this article, which provides extended coverage of recent developments in rubber elasticity, relaxation transitions, non-linear viscoelastic behavior, anisotropic mechanical behavior, yield behavior of polymers and other fields.
Journal ArticleDOI
The Physics of Glassy Polymers
TL;DR: In this paper, the authors present the theory of SAXS and its application in the case of glassy phases with phases in internal equilibrium (SAXS-PE) and show that it can be applied to a variety of properties of amorphous polymers.
Journal ArticleDOI
Determination of the plastic behaviour of solid polymers at constant true strain rate
C. G'sell,John J. Jonas +1 more
TL;DR: In this paper, a tensile testing method is described in which the samples are tested atconstant local true strain rate, and it is concluded that the positive curvature of the log σ flow curve is responsible for the stabilization of flow localization associated with cold drawing.
Journal ArticleDOI
The necking and cold-drawing of rigid plastics
TL;DR: In this paper, it was shown that the modulus of many polymers is much reduced by strain and the consequent downward bending of the stress-strain curve leads to mechanical instability and so causes a neck to form.
Related Papers (5)
Determination of the plastic behaviour of solid polymers at constant true strain rate
C. G'sell,John J. Jonas +1 more