Journal ArticleDOI
Numerical calculation of stress relaxation modulus from dynamic data for linear viscoelastic materials
TLDR
In this paper, numerical formulae are given for stress relaxation modulus from the known course of the storage and loss modulus with frequency for linear viscoelastic materials.Abstract:
Numerical formulae are given for calculation of stress relaxation modulus from the known course of the storage and loss modulus with frequency for linear viscoelastic materials. The formulae involve values of the storage modulus and/or loss modulus at frequencies equally spaced on a logarithmic frequency scale, the ratio between successive frequencies beeing two. A method is introduced by which bounds for the relative errors of these formulae can be derived. These bounds depend on the value of the damping, tanδ, at the angular frequency,ω, for which the calculation is made. The less the damping, the simpler the calculation of the stress relaxation modulus. This calculation involves either the value of the storage modulus at a frequencyω
0 = 1/t, and the values of the loss modulus in a rather narrow frequency region aroundω
0, or the value of the storage modulus at frequencyω
0 and the derivative of the storage modulus with respect to the logarithm of frequency in a frequency region aroundω
0.read more
Citations
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Journal ArticleDOI
Formability analyses of uni-directional and textile reinforced thermoplastics
TL;DR: In this article, the deformations during forming of carbon UD/PEEK and glass 8HS/PPS blanks with a quasi-isotropic lay-up were analyzed.
Journal ArticleDOI
Silica-graphene oxide hybrid composite particles and their electroresponsive characteristics.
Wen Ling Zhang,Hyoung Jin Choi +1 more
TL;DR: The electrorheological (ER) characteristics of the Si-GO hybrid composite based ER fluid were examined by optical microscopy and a rotational rheometer in controlled shear rate mode under various electric field strengths and showed a good correlation with its ER characteristics.
Journal Article
Formability analyses of uni-directional and textile reinforced thermoplastics Part A Applied science and manufacturing
TL;DR: In this paper, the deformations during forming of carbon UD/PEEK and glass 8HS/PPS blanks with a quasi-isotropic lay-up were analyzed.
Journal ArticleDOI
Electrorheology of Graphene Oxide
TL;DR: Novel polarizable graphene oxide particles with oxidized groups on their edge and basal planes were prepared by a modified Hummers method, and their electro-responsive electrorheological (ER) characteristics when dispersed in silicone oil were examined with and without an electric field applied.
Journal ArticleDOI
Molar Mass and Molecular Weight Distribution Determination Of UHMWPE Synthesized Using a Living Homogeneous Catalyst
Saeid Talebi,Robbert Duchateau,Sanjay Rastogi,Joachim Kaschta,Gwm Gerrit Peters,PJ Piet Lemstra +5 more
TL;DR: In this article, melt rheometry based on the modulus model is utilized to measure the molar mass and polydispersity of ultra high-molecular-weight polyethylenes (UHMWPEs) having molar masses > 1.
References
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Journal ArticleDOI
Numerical calculation of storage and loss modulus from stress relaxation data for linear viscoelastic materials
TL;DR: In this article, numerical formulae for the storage and loss modulus from the known course of the stress relaxation modulus for linear viscoelastic materials are given for linear viscous materials.
Journal ArticleDOI
The numerical calculation of storage and loss compliance from creep data for linear viscoelastic materials
TL;DR: In this paper, Steinkopff et al. presented numerical formulae for storage and loss compliance from the course of the creep compliance for linear viscoelastic materials.
Journal ArticleDOI
Numerical calculation of creep compliance from dynamic data for linear viscoelastic materials
TL;DR: In this article, numerical formulae are given for the calculation of creep compliance from the known course of the storage and loss compliance with frequency for linear viscoelastic materials, which involve values of storage compliance and/or loss compliance at frequencies which are equally spaced on a logarithmic frequency scale.
Book ChapterDOI
On the Interconversion of Linear Viscoelastic Functions with Special Application to Shear Behavior in the Glass-Rubber Transition Region
TL;DR: In this paper, the problem of interconverting measurable functions for linear viscoelastic materials is reviewed, and a system of numerical formulae for such interconversions is presented, together with bounds for the errors.