physically ageing polymersEquations are derived to predict the effects of physical ageing on the Young's modulus, yield stress, yield strain and stress-strain relationship of glassy polymers in uniaxial compression. The stress-strain behaviour of a quenched and annealed polymer depends on the ...
A previously-developed mathematical model for the instrument has also been extended to account for the effect of the static stress and the stress rate imposed on the sample during measurement. Based on a simple constitutive relation for non-linear stress-strain behaviour of polymers, this model ...
stress–strain curveIn recent years, the study of polymer/clay nanocomposites has attracted major research and commercial interests due to their superior mechanical and thermal properties to those of the neat polymers. Numerical modelling is an advantageous approach to understand the material behaviour. ...
crystalline polymerstensile testsisotactic polypropylenepolyoxymethylenePTFEstress/strain behaviour/ A6220F Deformation and plasticity A8140L Deformation, plasticity and creepNo Abstract available for this article.doi:10.1007/BF01526884M. TakayanagiK. Imada...
Deformation processes in the material are the subject of interest in many scientific works. There are many mathematical models developed to predict stress–strain behaviour of a material subjected to a specific load. The most often used models are bounding surface models, the elastic, and hyperbolic...
This behaviour suggests that particles form a percolated network and that large stretches induce changes in the microstructure, such as partial debonding between particles and polymers, breaking polymer chains, or formation of voids in the matrix. The modulus is insensitive to C when the polymers ...
among all the polymers, much attention has been paid to conjugated polymers (also known as organic semiconductors or conducting polymers) for organic based electronic devices (OED) due to their interesting opto-electronic configuration, which can be varied from insulator to metal like behaviour20,21...
Mechanics of Elastic Performance of Textile Materials: II. The Application of Sonic Techniques to the Investigation of the Effect of Visco-Elastic Behavior upon Stress-Strain Relationships in Certain High Polymers t 喜欢 0 阅读量: 27 作者: Hamburger,J W.摘要: The factors which affect the textile...
The tensile test provides an insight into the stress/strain behaviour of a material under uniaxial tensile loading and makes it possible to distinguish between brittle and ductile materials. From: Additives for Plastics Handbook (Second Edition), 2001 ...
polymersstress relaxation/ strain ratestress relaxationpolyethylenerelaxation timesstraining timeinitial loadingCdflow exponential law/ A6240 Anelasticity, internal friction and mechanical resonances A8140J Elasticity and anelasticityStress relaxation measurements have been carried out on high density polyethylene ...