Deformation Behaviour Analysis of Polystyrene Krasten171 With Montmorillonite Nanofillers

Abstract

The paper is focused on the experimental investigation of the montmorillonite nanofillers effect on deformation properties of polystyrene KRASTEN 171. The combination of a low amount of clay with dispersed polymeric phase may cause synergistic effects leading to very fair balance of mechanical behaviour in some cases. The paper analyses the effect of nanocomposites and type of the material on the individual measured parameters, relations between them, strength and deformation behaviour. Deformations were evaluated by non-contact videoextensometry method. The results show that doping of the base material polystyrene with nanofillers particles has an effect on the plastic deformation increments.

The Seismic Response of Fluid Filling in Rectangular Reservoir at Nador City Morocco

“…The convective hydrodynamic pressure on the reservoir wall and the reservoir bottom for the decisive contribution the first -fundamental mode is given by 8 = 5 8 8 ,…”

“…The convective spectral acceleration for n-mode is obtained from the 0.5 % damped elastic response spectrum [20,30], ρ is the mass density of the liquid. The distributions of the hydrodynamic convective pressure on the wall of the reservoir 8 along the height of the wall are given by (8), where the functions 5 8 The circular frequencies are given for the n th mode: When the contained liquid is horizontal excited, the liquid exerts the hydrodynamic impulsive and the hydrodynamic convective pressure together with the hydrostatic pressure on the reservoir walls and the reservoir bottom [25].…”

Strength and Microstructure of Cold-Rolled if Steel

“…With the emerge of vacuum technology, it is possible to produce ULC steels with carbon content of less than 0.005 %mass which is called interstitial free (IF) steels [3][4][5][6]. It is well known that the interstitial elements such as carbon (C) and nitrogen (N) in the steel are lower owing to vacuum treatment, thereafter one of the most important properties of ULC steel (formability) is improved to apply for automotive body.…”

“…Since these IF steels were not deoxidized by aluminum or/and other elements, the oxygen content was rather high compared to industrial steel. High content of [N] (less than 80 ppm) as in conventional IF steel may high enough to contribute to the strength of the alloy, however, may harmful to the formability of the steels [5,10]. To improve the formability, major attention has been focused on reducing the total amount of carbon and nitrogen during steel making and the removal of these interstitial elements from solid solution by the addition of stabilizing alloying additions [13].…”

Influence of the Strain Rate and Heat Treatment on the Mechanical Properties of Steel Sheets

“…The influence of the strain rate on the strength characteristics (yield point, tensile strength) are described using parametric equations [2][3][4][5]. However, the sensitiveness of a material on the strain rate is a function of the material structure, and it can generally be stated that the "more homogeneous" structure, the higher its sensitiveness to the strain rate [6][7][8][9]. In general, it applies that increased strain rates result in increased strength characteristics of materials, while the yield point grows more intensively than the tensile strength [6].…”